Duke Energy Annual Benefits Enrollment for 2017

Duke Energy Annual Benefits Enrollment for 2017 Enroll from Oct. 31 through Nov. 18, 2016 You have the opportunity to enroll from Oct. 31 through Nov. 18, 2016 in health and insurance coverage that will be effective Jan. 1, 2017. Default coverage applies if you do not enroll by Nov. 18, 2016. In order to receive the non-tobacco user discount for 2017, you must: 1) Attest to a non-tobacco user status during annual benefits enrollment by Nov. 18; or 2) Attest to a tobacco user status during annual benefits enrollment by Nov. 18, and then initiate the Alternate Procedure and submit the proper documentation by Nov. 23, 2016. If you do not take the above actions, you will not be eligible for the non-tobacco user discount for 2017. What s changing for 2017...3 Enrollment tips...4 When you need assistance and information...5 Use online tools to make your 2017 decisions...6 How to enroll...7 Don t be caught with coverage you don t want...10 Making changes during the year...11 Who s eligible...11 Coverage highlights...11 Contact information...16 Annual notifications...18

About this guide This guide is intended to assist you in making your enrollment elections and contains selected highlights of Duke Energy s employee benefits plans. If any statement herein, or any other communication, conflicts with applicable plan documents, the plan documents will govern. Duke Energy retains the right to amend, modify or terminate its benefits plans in any respect and at any time, and neither its benefits plans nor your plan participation will be considered a contract for future employment. 2

What s changing for 2017 Changes in the Duke Energy Active Vision Plan The in-network contact lens allowance will increase from $150 to $170. Enhanced Exclusive Provider Organization (EPO) eliminated for IBEW 1393 After 2016, the Medical Plan s Enhanced EPO option available to Duke Energy employees represented by IBEW 1393, will no longer be available under the Medical Plan. If you are enrolled in the Enhanced EPO option for 2016 and you do not make a Medical Plan election during the enrollment window, you will default to the Health Savings Plan 1 (HSP 1) option at your current coverage level (i.e., Individual Only, Individual + Spouse/Domestic Partner, Individual + Child(ren) or Individual + Family) and applicable contribution rates will apply. Employee contribution rates for medical coverage will increase Employee contribution rates for medical coverage in 2017 will increase. Additionally, the contribution rates for the Individual + Spouse/DP and Individual + Family coverage levels will increase at a higher rate than other coverage levels due to the higher claims costs that spouses/domestic partners incur under the Medical Plan as compared with employees and other dependents. The following actions may help you manage your cost of health coverage. Lifestyle behaviors drive a significant portion of medical costs. When we change our personal choices and manage our health conditions, we can slow the pace of cost increases. Take advantage of the Duke Energy programs designed to help you manage your health. If your spouse/domestic partner has access to medical coverage through his or her own employer, you are encouraged to review that employer s medical coverage options and costs. Preferred Provider Organization (PPO) changes* Effective Jan. 1, 2017 the annual out-of-pocket (OOP) maximums and co-insurance for the PPO option under the Duke Energy Active Medical Plan (the Medical Plan ) will change. * Not applicable to Duke Energy employees represented by IBEW SCU-8. Duke Energy employees represented by IBEW SCU-8 will continue to have access to the current PPO option, which will be renamed as PPO 2. PPO 2016 2017 Individual OOP maximum (In-network / Out-of-network) Family OOP maximum (In-network / Out-of-network) Co-insurance (In-network / Out-of-network) $2,000 / $4,000 $2,500 / $5,000 $4,000 / $8,000 $5,000 / $10,000 90% / 70% 80% / 60% 3

Enrollment tips What you need to do Locate the Duke Energy Portal s Employee Center Annual Enrollment page. (You also can access the Portal from home at https://portal.duke-energy.com.) Where to find information Visit the Employee Center s Annual Enrollment page for information about health and insurance coverage available for 2017. If you are on LTD or a leave of absence during the benefits enrollment window for 2017, please contact the Duke Energy myhr Service Center for enrollment assistance. Before you enroll, read this guide. Default coverage is shown on page 10. Review the default coverage that will apply if you do not make coverage elections during annual enrollment. Review the dependent eligibility requirements. Refer to the applicable Summary Plan Description (SPD) on the Your Benefits Resources website. Enroll in health and insurance coverage for you and your eligible dependents. Prepare before you enroll. Have the full name, date of birth and Social Security number for the eligible dependents you intend to enroll. On Oct. 31 you ll receive an email to your companyprovided email account that will direct you to online enrollment and decision support information tools. If you don t have a company-provided email account, refer to How to enroll on page 7. Review and update your beneficiary designations during annual enrollment or at any other time, if necessary. Refer to the online enrollment tool. For information about beneficiary designations, please refer to the applicable SPD on the Your Benefits Resources website. To lower your cost of medical coverage during 2017: Attest to a non-tobacco user status during annual enrollment by Nov. 18; or Attest to a tobacco-user status during annual enrollment by Nov. 18, and then initiate the Alternate Procedure and submit the proper documentation by Nov. 23, 2016. No response results in no discount. Refer to pages 8-9 for information about the Non-Tobacco User Discount and the Alternate Procedure. 4

Annual enrollment is your opportunity to explore choice and value Annual enrollment is your opportunity to review your options and make choices for the following year. Each fall you can reconsider your coverage decisions for the following year, including whether you will enroll your dependents, and don t forget that certain work or life events during the year allow for coverage changes as described on page 11. Does your spouse s (or domestic partner s) employer offer health coverage? Duke Energy offers medical, dental and vision coverage for its eligible employees and their eligible dependents. However, if your spouse s (or domestic partner s) employer offers these coverage options, you owe it to your family to examine your opportunities to get the best deal. If your spouse s (or domestic partner s) employer s annual benefits enrollment opportunity begins after Duke Energy s annual benefits enrollment ends, and you need to change your Duke Energy benefit coverage elections for 2017 as a result of coverage elections that your spouse (or domestic partner) makes, you must call the Duke Energy myhr Service Center within 31 days of the date your spouse (or domestic partner) makes 2017 coverage elections. Conversely, if your spouse s (or domestic partner s) employer s annual benefits enrollment opportunity ends prior to the start of Duke Energy s, your spouse (or domestic partner) should ask his/her employer about the ability to make changes to his/her 2017 coverage elections. When you need assistance and information The Duke Energy myhr Service Center If you have questions or need assistance, call the Duke Energy myhr Service Center at 888.465.1300. Representatives are available Monday through Friday, 8 a.m. to 5 p.m. Eastern time (ET), and can help you navigate online resources and find the information you need to complete your online enrollment. Menu prompts will route you to the appropriate service team for assistance. You will need your myhr password, the last four digits of your Social Security number and your date of birth when you call. First-time callers will be prompted to create a myhr password to help with identification and security. Your Benefits Resources Your Benefits Resources is our online resource to learn about health and pension benefits and to complete certain self-service transactions, including annual benefits enrollment for 2017. You can access the website using any Duke Energy workstation. Additionally, you can access the Your Benefits Resources website from anywhere that you have internet access by visiting http://resources.hewitt.com/duke-energy. If you need help navigating the website, call the Duke Energy myhr Service Center at 888.465.1300 for assistance. By accessing the Your Benefits Resources website, you re consenting that you willingly agree to receive and access future plan documents, notices and Summary Plan Descriptions (SPDs) electronically. This consent confirms that you have access to the internet and email, which will be required to receive and access plan documentation electronically. You may revoke or modify your consent at any time without charge by calling the Duke Energy myhr Service Center. 5

Use online tools to make your 2017 decisions Action Tool Description Choose the plan that works for you. Health Plan Comparison Chart View 2017 contribution rates for the Medical Plan options and compare features of up to three different Medical Plan options. Medical Plan contribution rates in this tool do not reflect any earned Live Well rewards or the non-tobacco user discount. Charts also are available for the Duke Energy Active Dental Plan (the Dental Plan ) and the Duke Energy Active Vision Plan (the Vision Plan ). View your out-of-pocket costs, claims paid and employer-paid amounts. Health Care Cost Summary Use a summary of your actual claims data as a convenient reference in making your medical coverage decision for 2017. Available only if you were enrolled in Duke Energy medical coverage administered by UnitedHealthcare during 2015 and/or 2016. Estimate your costs. Medical Expense Estimator Assess your out-of-pocket costs under the various Medical Plan options by taking your likely medical care usage into account. This tool is populated with information for an average user. You can customize the information to reflect your typical use. Consider a savings or spending account. See the Value of a Health Savings Account Estimate Your Health Care Needs Estimate Your Dependent Care Needs Estimate out-of-pocket health and dependent care expenses to help you determine how much to contribute to a Health Savings Account, Health Care Spending Account and/or Dependent Care Spending Account. Find a network provider. Search for Doctors Search for Dentists Search for Eye Doctors Search to find out which providers are in the UnitedHealthcare network and learn about hospital quality and doctor performance. Search tools are also available to find providers who are in the Cigna and Vision Service Plan networks. 6

How to enroll The Your Benefits Resources website is generally available 24 hours a day, seven days a week. Phone assistance is available from Duke Energy myhr Service Center representatives from 8 a.m. to 5 p.m. ET, Monday through Friday. Do not wait until the last minute to call for assistance. 1. Access the enrollment site Go to the Duke Energy Portal s Employee Center Annual Enrollment page. OR Wherever you have internet access, you can access the Your Benefits Resources website directly at http://resources.hewitt.com/duke-energy. 2. Make your coverage elections for 2017 You can make your coverage elections at any time during the annual enrollment window by enrolling online or by calling the Duke Energy myhr Service Center. The coverage elections (or default coverage, as applicable) on file as of 11:59 p.m. ET, Nov. 18, 2016 will be your coverage for 2017. Additionally, you will be able to view your and your spouse s/domestic partner s Live Well rewards, if applicable, earned during 2016 that may be applied to reduce your per-pay-period contributions for coverage under the Medical Plan in 2017. 3. You must complete the Non-Tobacco User Attestation as a non-tobacco user by Nov. 18, or complete the Non-Tobacco User Attestation as a tobacco user by Nov. 18, and then initiate the Alternate Procedure and submit the proper documentation by Nov. 23, 2016 as described below, to receive the non-tobacco user discount. Refer to pages 8 9 for additional information about the Alternate Procedure. 4. Confirm your 2017 coverage elections If you enroll on the Your Benefits Resources website You will see the Completed Successfully page after you ve completed your enrollment online and a Confirmation of Coverage email will be sent to your Duke Energy email account. Print this email as a record of your 2017 coverage elections because it serves as your Confirmation of Coverage statement. If you enroll through the Duke Energy myhr Service Center A Confirmation of Coverage statement will be mailed to your address on file within one to two business days. It is very important that you promptly review your Confirmation of Coverage statement for accuracy. If you find an error, you have until the date shown on the statement to contact the Duke Energy myhr Service Center again to make corrections. Note: If you are on a leave of absence or long-term disability and do not have access to your Duke Energy email account, you should print the Completed Successfully page as a record of your 2017 coverage elections because it serves as your Confirmation of Coverage statement. A paper Confirmation of Coverage statement will not be mailed to you. It is very important that you promptly review your Confirmation of Coverage statement for accuracy. If you find an error, you have until Nov. 18 to access the website again and make the necessary change(s). 7

Unless you find an error and correct it as described, no new enrollments or changes to coverage will be accepted once the enrollment window closes. Keep your copy of your Confirmation of Coverage statement with your other important records. It confirms your health and insurance elections for 2017. View your pending coverage elections on the Your Benefits Resources website at any time after the annual enrollment window closes by clicking on Your New Coverage (located on the Health and Insurance Summary page). To qualify for the non-tobacco user discount To qualify for the non-tobacco user discount for medical coverage and non-tobacco user life insurance rates in 2017, you (and your spouse/domestic partner, as applicable) must: 1. Have been tobacco-free (including smokeless tobacco and electronic cigarettes) since Jan. 1, 2016, 2. For medical coverage, complete the Non-Tobacco User Attestation and/or for life insurance coverage, indicate your tobacco status, during annual enrollment, and 3. Remain tobacco-free (including smokeless tobacco and electronic cigarettes) in 2017. If you qualify, actions you must take to receive the non-tobacco user discount For medical coverage, in order to receive the non-tobacco user discount, each year you must: 1) Complete the Attestation indicating you are a non-tobacco user (as described above); or 2) Complete the Attestation indicating you are a tobacco user during annual enrollment, and then initiate the Alternate Procedure and submit the proper documentation by Nov. 23, 2016. By completing the Non-Tobacco User Attestation, you are affirmatively representing your (and your spouse s/domestic partner s, as applicable) tobacco user status and eligibility for the non-tobacco user discount under the Medical Plan. You are not eligible to receive the non-tobacco user discount for Medical Plan coverage during 2017 if: 1) You do not complete the Non-Tobacco User Attestation during annual enrollment (i.e., your status remains set to No Response when the enrollment window closes on Nov. 18); or 2) You indicate that you (and/or your spouse/domestic partner, as applicable) are a tobacco user during annual enrollment (by Nov. 18), but you do not initiate the Alternate Procedure described on page 9 and submit the necessary documentation by Nov. 23, 2016. If you begin using tobacco If you (and/or your spouse/domestic partner) attest to being a non-tobacco user and become a tobacco user during the remainder of 2016 and/or 2017, you must notify the Duke Energy myhr Service Center within 31 calendar days of the date that you (and/or your spouse/domestic partner) become a tobacco user. You (and/or your spouse/domestic partner) will no longer be eligible for the Non-Tobacco Discount. Changes to your contribution amounts will be made as soon as administratively practicable after the date on which you provide notice. If you misrepresent your tobacco user status If you misrepresent your tobacco user status (or the tobacco user status of your spouse/domestic partner) in the Non-Tobacco User Attestation, or if you (and/or your spouse/domestic partner, as applicable) become a tobacco user after completing the Non-Tobacco User Attestation as a non-tobacco user and you do not notify the Duke Energy myhr Service Center of the change in tobacco user status, Duke Energy reserves the right to recover any contribution amounts you should have paid, to take appropriate disciplinary action for falsification of documents, up to and including termination of health and insurance coverage and/or discharge, and to take other appropriate action. 8

Alternate Procedure non-tobacco user discount for the Medical Plan The Medical Plan is committed to helping you (and/or your spouse/domestic partner, as applicable) achieve your best health. The non-tobacco user discount is available to all employees covered under the Medical Plan (and their spouses/domestic partners, as applicable). If you (and/or your spouse/domestic partner) do not qualify for the non-tobacco user discount because you are not currently tobacco free, have not been tobacco-free since Jan. 1, 2016, or intend to use tobacco during the coverage period, you may still qualify for the non-tobacco user discount if you attest to being a tobacco user during annual enrollment by Nov. 18, and then initiate the Alternate Procedure and submit the proper documentation by Nov. 23, 2016. This requirement applies even if you completed the Alternate Procedure for 2016, including completion of the QuitPower Program by June 30, 2016. Information about the Alternate Procedure and what it means to be tobacco-free is located on the Duke Energy Portal s Employee Center Annual Enrollment page in the Enrollment Resources section. We will work with you (and/or your spouse/domestic partner) and, if you wish, with your doctor and/or your spouse s/domestic partner s doctor, prior to the Alternate Procedure Certification submission deadline, to find an alternate procedure that provides the same non-tobacco user discount that is right for you (and/or your spouse/domestic partner) in light of your (and/or your spouse s/domestic partner s) health status. For questions regarding the non-tobacco user discount Alternate Procedure, call the Duke Energy myhr Service Center. The Alternate Procedure for obtaining the non-tobacco user discount is available only with respect to Medical Plan coverage and does not apply to supplemental or dependent spouse life insurance coverage. Consequences of providing inaccurate information during annual enrollment By accessing the enrollment tool on Your Benefits Resources or calling the Duke Energy myhr Service Center and making your coverage elections for 2017, you are affirmatively representing that all information provided, including, but not limited to, the eligibility of any dependents for coverage, your completion of any 2016 Live Well initiatives and/or your non-tobacco user status (and that of your spouse/domestic partner, as applicable), is true and correct. If Duke Energy discovers that any information you provide during annual enrollment is incorrect or inaccurate, Duke Energy reserves the right to recover any contribution amounts you should have paid, to recover plan benefits paid, to take appropriate disciplinary action for falsification of documents, up to and including termination of health and insurance coverage and/or discharge, and to take other appropriate action. 9

Don t be caught with coverage you don t want Default coverage will apply if you don t make your elections for 2017 by Nov. 18, 2016. Please refer to the chart below (or the cover letter, if applicable) for more information about applicable default coverage. 2017 Default Coverage Benefit Plan Medical Non-Tobacco User Attestation 2017 Default Coverage Same as current election*, if available; otherwise, Health Savings Plan 1 at current coverage level (refer to the special rules on page 15 that apply if you are receiving LTD benefits) If you don t either attest to a non-tobacco user status by Nov. 18, or attest to a tobacco-user status by Nov. 18, and then initiate the Alternate Procedure and submit the proper documentation by Nov. 23, 2016, you will NOT receive the non-tobacco user discount during 2017. Health Savings Account Dental Vision Same contribution in effect on Dec. 31, 2016 as long as still enrolled in a Health Savings Plan option. Same as current election at current coverage level Same as current election at current coverage level Health Care Spending Account No contributions in 2017 Dependent Care Spending Account No contributions in 2017 Long-Term Disability Basic Life Insurance Supplemental Life Insurance Spouse Life Insurance Child Life Insurance Basic AD&D Insurance Supplemental AD&D Insurance Spouse AD&D Insurance Child AD&D Insurance Same as current election Same as current election Same as current election Dec. 31, 2016 tobacco user status carries forward Same as current election Dec. 31, 2016 tobacco user status carries forward Same as current election Same as current election Same as current election Same as current election Same as current election *Employees represented by IBEW SCU-8 enrolled in the PPO option for 2016 who do not make an election will default to the PPO 2 option at the current coverage level. 10

Making changes during the year Your 2017 coverage elections, including default coverage, remain in effect for the entire calendar year unless a work/life event such as birth, change in marital status or change in spouse s coverage allows you to make changes during the year. You must make any allowed changes within 31 calendar days of the date of the event. When you drop coverage for an ineligible dependent, the change is effective at the end of the month in which the dependent loses eligibility. Changes to your per-pay-period contribution amounts will be made as soon as administratively practicable after the date on which you provide notice. For more information about work/life events and applicable time frames within which to make changes, refer to the applicable Summary Plan Description, available on the Your Benefits Resources website, or call the Duke Energy myhr Service Center for information and assistance. NOTE: A provider dropping out of a network during the calendar year does not constitute a work/life event. Other opportunities to enroll during the year There may be other opportunities to enroll in Duke Energy medical coverage during the year if you elect to decline coverage during annual enrollment. For information about other opportunities to enroll or to request special enrollment, refer to the Medical Plan Summary Plan Description, available on the Your Benefits Resources website, or contact the Duke Energy myhr Service Center. Getting married? Expecting a baby? If you experience a work/life event such as a marriage, divorce or birth of a child during or after annual enrollment (but prior to Jan. 1, 2017) that will result in adding dependents to, or dropping dependents from, your coverage for 2016 AND/OR your coverage for 2017, please call the Duke Energy myhr Service Center within 31 days of the event to make your election changes. You should confirm that the election changes you make as a result of the work/life event will apply for the remainder of 2016 and for your 2017 coverage. Who s eligible When you enroll for medical, dental, vision, life and/or AD&D coverage during the enrollment period, you may elect to cover your eligible dependents. To learn more about which of your dependents are eligible for coverage, please refer to the Duke Energy Portal s Employee Center Annual Enrollment page for information or refer to the applicable Summary Plan Description. Due to certain plan changes made in connection with the Affordable Care Act, active employees of Duke Energy cannot be enrolled in Duke Energy s retiree medical, dental and/or vision coverage. If you are a current Duke Energy employee and your spouse/domestic partner is a Duke Energy retiree, you cannot enroll in Duke Energy s retiree medical, dental and/or vision coverage as a dependent of your spouse/domestic partner. Additionally, if you are a Duke Energy retiree enrolled in Duke Energy s retiree medical, dental and/or vision coverage and you are rehired to active status, your retiree coverage will end. Coverage highlights For detailed information about medical, dental, vision and other health and insurance coverage, please refer to the applicable Summary Plan Description located on Your Benefits Resources. 11

Medical Plan highlights The following Medical Plan options available to employees will be administered by UnitedHealthcare. Use the online planning tools to help you make an informed enrollment decision taking into account your contributions toward the cost of coverage and out-of-pocket costs. Health Savings Plan 1 a High-Deductible Health Plan (HDHP) option Health Savings Plan 2 an HDHP option Preferred Provider Organization (PPO) All medical coverage choices available to you are shown in the online annual enrollment tool where you can view plan comparison information, including the cost of coverage, as you review your enrollment choices. Important reminders about network providers and provider networks Providers in the UnitedHealthcare network have agreed to lower what they charge you for services these are network discounts and help you control your medical care costs during the year. Provider networks change throughout the year and there is no assurance that a provider in the network today will remain a participating provider. Similarly, new providers join the network regularly. It is the responsibility of UnitedHealthcare as the network manager, and not Duke Energy, to manage provider networks. Looking for the lowest contribution rates PLUS an opportunity to save and invest? Consider a Health Savings Plan option. These options have lower employee contribution rates than other options. Additionally, most people can contribute on a pretax basis to a Health Savings Account during 2017 to save and use for out-of-pocket health care expenses. No use it or lose it! Refer to the 2017 Health Savings Account booklet on the Duke Energy Portal s Employee Center Annual Enrollment page. Health Savings Plan + HSA = Triple Tax Advantage To learn more about the Health Savings Plan options and Health Savings Accounts, refer to the information available on the Duke Energy Portal s Employee Center Annual Enrollment page. Annual IRS maximum contributions per coverage category Age Individual Only Individual + Spouse/Domestic Partner Individual + Child(ren) Individual + Family Under age 55 $3,400 $6,750 $6,750 $6,750 Age 55 or over * $3,400 + $1,000 $6,750 + $1,000 $6,750 + $1,000 $6,750 + $1,000 * The catch-up contribution applies to the individual. If your spouse also is eligible to make a catch-up contribution, he or she would need to establish and contribute to his or her own Health Savings Account. The annual Health Savings Account catch-up contribution limit in 2017 is $1,000 for individuals who are age 55 or over at any point during the year. Company matching contributions 2 Duke Energy will match your pretax payroll contributions to your Health Savings Account each pay period that you contribute, up to an annual total of $600 if you elect individual coverage or $1,200 if you elect family coverage (i.e., individual + spouse/domestic partner, individual + child(ren) or individual + family). You must open an HSA with Optum Bank through the annual enrollment tool in order to be eligible for company matching contributions. Because Duke Energy will make company matching contributions to your Health Savings Account on your behalf, the limits for employee pretax contributions through payroll deduction are set lower than the IRS limits to take company matching contributions into consideration. 2 Company matching contributions for Health Savings Accounts will remain at $500 (individual) and $1,000 (any family coverage levels) for employees represented by IBEW SCU-8 during 2017. 12

Prescription drug coverage Prescription drug coverage is included with all Medical Plan options and is administered by CVS Caremark. Be sure to review the Medical Plan chart for more information about prescription drug coverage. Note that certain preventive medications are covered at 100 percent under the Health Savings Plan options. Additionally, you can review the Medical Plan Summary Plan Descriptions, available on the Your Benefits Resources website. CVS Caremark develops the Preventive Therapy Drug List in accordance with FDA and IRS guidelines regarding the types of medications that are considered preventive and therefore may be covered under the Health Savings Plan options before the required deductible is satisfied. The list is periodically updated to reflect new guidance issued and/or new drugs to the market. The current CVS Caremark Performance Drug List includes the preferred medications for use. The CVS Caremark Performance Drug List and other lists, such as the CVS Caremark Preventive Therapy Drug List and Value Generic Drug List, are reviewed quarterly and subject to change. These lists are available on Caremark.com as well as through the Employee Center Benefits-Health & Insurance page. There are a small number of medications excluded from the CVS Caremark formulary due to the availability of preferred alternatives. You may find that certain drugs and drug classes have additional requirements. In some cases, your prescription may need to be approved by a clinical review team, you may be asked to try a generic before a brand-name drug, you may be required to fill your prescription as a 90-day supply, or the quantity may be limited based on clinical guidelines. These requirements are in place to encourage the use of cost-effective drugs and help make sure that certain prescribing guidelines are met for your condition. If a medication you use is subject to any of these restrictions or limits, CVS Caremark will contact you. Dental Plan highlights The Dental Plan, administered by Cigna, offers you and your covered dependents coverage for preventive care (cleanings and exams), more extensive treatment (fillings, extractions, crowns and bridges) and orthodontic care (up to age 19). Be sure to review the Dental Plan chart. Additionally, you can view Dental Plan information, including the cost of coverage, as you review your enrollment choices in the online annual enrollment tool. You may use any dental provider you choose and receive the same level of benefit (subject to reasonable and customary limits) regardless of Cigna network participation. However, if you use a Cigna network provider for your care, charges will be based on negotiated rates and you may find that you save on out-of-pocket expenses. Vision Plan highlights The Vision Plan, insured through Vision Service Plan, helps you pay for the cost of your vision care expenses, including routine exams and materials such as contact lenses. Be sure to review the Vision Plan chart. Additionally, you can view Vision Plan information, including the cost of coverage, as you review your enrollment choices in the online annual enrollment tool. If you choose to Decline Coverage, you can receive discounts through the Vision Discount Program. This program provides a discount when you use a doctor in the Vision Service Plan network for your eye exams, materials (glasses, contacts, etc.) or laser vision correction. You pay the negotiated discount rate at the time you receive services. 13

Flexible Spending Account highlights Flexible Spending Accounts (FSAs), administered by Aon Hewitt, allow you to use pretax dollars to pay for certain out-of-pocket expenses that you incur during the calendar year. If you do not use the amounts credited to your accounts by the applicable annual deadline, you lose them under the use it or lose it rule. Refer to the Duke Energy Portal s Employee Center Annual Enrollment page for resources about how to use and manage an FSA. IMPORTANT: The IRS requires that employers perform and pass certain tests (nondiscrimination testing) in order for FSA benefits to be nontaxable. If you are a highly compensated employee, the amount that you elect to contribute to an FSA may have to be reduced during the year (possibly to zero) so that the FSA will pass these tests. If you are affected by these limits, you will be notified. Duke Energy provides certain coverage at no cost to you Duke Energy provides the following coverage at no cost to you and enrollment is automatic. Basic Life Insurance Coverage 3 Equal to one times your annual base pay ($50,000 minimum) or $50,000. Note: Amounts of company-paid Basic Life Insurance coverage in excess of $50,000 will result in taxable imputed income to you. Basic Accidental Death & Dismemberment (AD&D) Insurance Coverage 3 Equal to one times your annual base pay ($50,000 minimum). Business Travel Accident (BTA) Insurance Coverage Equal to three times your annual base pay (up to $2 million in coverage) if you are a full-time employee. Equal to two times your annual base pay (up to $200,000 in coverage) if you are a part-time employee. Long-Term Disability (LTD) Insurance Coverage Equal to 50 percent of your annual base pay, subject to the maximum monthly benefit of $15,000. 3 Up to $1 million in coverage You can purchase additional coverage In addition to the insurance coverage listed above that s paid for by Duke Energy, you can purchase the following insurance coverage for yourself and your eligible dependents. When you access the online annual benefits enrollment tool, you can view the amounts of coverage available and the cost of coverage. Supplemental Life Insurance coverage for yourself Dependent Life Insurance coverage for your eligible spouse/domestic partner and/or child(ren) Dependent coverage amount for your spouse/domestic partner cannot exceed 100 percent of your life insurance coverage amount (basic and supplemental combined) Supplemental AD&D Insurance coverage for yourself Dependent AD&D Insurance coverage for your eligible spouse/domestic partner and/or child(ren) You cannot elect Dependent AD&D Insurance coverage if you do not elect Supplemental AD&D Insurance coverage for yourself Dependent coverage amount for any dependent cannot exceed 100 percent of your Supplemental AD&D Insurance coverage amount 14

Additional LTD coverage equal to 16 2/3 percent of your annual base pay for a total coverage amount equal to 66 2/3 percent of your annual base pay, subject to the maximum monthly benefit of $15,000 The cost of these additional coverages varies based on age and earnings. As part of your life insurance election, you also are required to indicate the tobacco/non-tobacco user status for yourself and your covered spouse/domestic partner. Non-tobacco users may be able to take advantage of certain discounted rates. In some instances you will be required to provide evidence of insurability. If you re currently on a leave of absence or long-term disability If you are on a leave of absence or receiving long-term disability (LTD) benefits, you can change the following coverage elections during annual enrollment: Medical Plan coverage (If you have received LTD benefits for more than 36 months and have not previously confirmed that you have Medicare coverage, (i) Duke Energy will assume that you have Medicare coverage and (ii) your default Medical Plan coverage will be the Health Savings Plan Out-of-Area (HSP OOA) coverage that coordinates with Medicare. If you call the Duke Energy myhr Service Center during annual enrollment to report that you are not eligible for Medicare, you can elect another Medical Plan option.) Tobacco user status for medical, supplemental life and dependent spouse life insurance coverage Dental Plan coverage Vision Plan coverage Supplemental and/or dependent spouse life insurance coverage (decline or decrease coverage) Supplemental and/or dependent spouse AD&D insurance coverage (decline or decrease coverage) If you are on a paid leave of absence in 2017, you may establish a Health Care Spending Account (HCSA) or, if you enroll in a Health Savings Plan option under the Medical Plan, a Health Savings Account for 2017 during annual enrollment. However, you may not establish a Dependent Care Spending Account (DCSA) until you return to work as an active employee. If you are on an unpaid leave of absence, you may not be eligible to elect AD&D coverage. If you are on an unpaid leave of absence, you generally cannot contribute to an HCSA or a DCSA for 2017 until the first pay period following your return to work as an active employee. However, if you are on an unpaid leave of absence under the Family and Medical Leave Act (FMLA), you may elect to contribute to an HCSA. If you elect to continue contributing to the HCSA during your period of unpaid FMLA leave, you will be billed for your contribution amounts, which will be paid on an after-tax basis. In addition, if you are on an unpaid leave of absence, you cannot contribute to a Health Savings Account on a pretax basis through Duke Energy until the first pay period following your return to work as an active employee. If you are receiving LTD benefits, you cannot contribute to an HCSA or a DCSA for 2017 until the first pay period following your return to work as an active employee. In addition, if you are receiving LTD benefits, you cannot contribute to a Health Savings Account on a pretax basis through Duke Energy until the first day of the pay period following your return to work as an active employee. You may also be eligible for different Basic Life, Basic AD&D and LTD coverage than what is stated on pages 14-15 of this guide. Call the Duke Energy myhr Service Center if you have questions. The 2017 Duke Energy Live Well Incentive Program Information about the 2017 Live Well Incentive Program that will help you reduce your cost of coverage in 2018 will be available this December and will describe activities, rewards and important deadlines. 15

Contact information Your Benefits Resources For information about benefit options and assistance with benefits enrollment Web Address Available from the Duke Energy Portal s Employee Center, Benefits Health & Insurance page or http://resources.hewitt.com/ duke-energy Contact Number N/A Duke Energy myhr Service Center N/A 888.465.1300 For information about benefits eligibility and answers to enrollment questions Live Well Incentive Program For information about the 2017 Live Well Incentive Program Your Spending Account TM For information about HCSA and DCSA features UnitedHealthcare For information about Medical Plan coverage, claims and network providers mynurseline SM For answers to your health questions 24/7 as well as access to the various support programs offered by UnitedHealthcare Available from the Duke Energy Portal s Employee Center Wellness page Available from the Duke Energy Portal s Employee Center, Benefits Health & Insurance page or http://resources.hewitt.com/ duke-energy (Under Other Benefits, select Your Spending Account) Available from the Duke Energy Portal s Employee Center, Benefits Health & Insurance page or www.myuhc.com A pre-member website is available at www.dukeenergy.welcometouhc.com NurseChat available at www.myuhc.com 877.818.5826 888.465.1300 ( Select Spending Accounts from the main menu) 877.214.2930 877.214.2930 16

Optum Bank For information about the Health Savings Account CVS Caremark For information about the prescription drug program, formulary and mail service program Cigna For information about Dental Plan coverage, claims and providers Vision Service Plan For information about Vision Plan coverage, claims and providers Available from the Duke Energy Portal s Employee Center, Benefits Health & Insurance page or www.myuhc.com Available from the Duke Energy Portal s Employee Center, Benefits Health & Insurance page or www.caremark.com Available from the Duke Energy Portal s Employee Center, Benefits Health & Insurance page or www.mycigna.com Available from the Duke Energy Portal s Employee Center, Benefits Health & Insurance page or www.vsp.com A pre-member website is available at www.vsp.com/go/dukeenergy 877.214.2930 888.797.8912 800.965.9271 800.877.7195 17

Annual notifications Women s Health and Cancer Rights Act Group health plans that cover mastectomies will cover certain breast reconstruction benefits in connection with a mastectomy. Coverage will be provided in a manner determined in consultation with you and your physician for: Reconstruction of the breast on which the mastectomy was performed Surgery and reconstruction of the other breast to produce a symmetrical appearance Prosthesis and physical complications for all stages of mastectomy, including lymphedema This coverage is subject to all of the terms of the Medical Plan, including relevant deductibles and co-insurance provisions. Newborns and Mothers Health Protection Act Health plans and insurance carriers generally may not, under federal law, restrict a mother s or newborn s benefits for a hospital length of stay that is in connection with childbirth to less than 48 hours following a vaginal delivery or 96 hours following a delivery by cesarean section. However, federal law generally does not prohibit the mother s or newborn s attending provider, after consulting with the mother, from discharging the mother or her newborn earlier than 48 hours (or 96 hours, as applicable). In any case, plans and insurance carriers may not, under federal law, require that a provider obtain authorization from the Medical Plan or the issuer for prescribing a length of stay not in excess of 48 hours (or 96 hours, as applicable). Privacy of Your Protected Health Information The Health Insurance Portability and Accountability Act (HIPAA) is federal legislation designed to protect the privacy and confidentiality of an individual s protected health information. A copy of Duke Energy s Notice of Privacy Practices is available on the Duke Energy Portal s Employee Center, Benefits Health & Insurance page and on the Your Benefits Resources website. You also can request a copy by calling the Duke Energy myhr Service Center. Summary Plan Descriptions The Summary Plan Descriptions (SPDs) provide full descriptions of the Duke Energy medical, dental, vision, health care spending account, dependent care spending account, disability, life insurance, accidental death and dismemberment and business travel accident plans (collectively, the Plans ), along with information regarding your rights, obligations and benefits under the Plans. The SPDs are available on the Your Benefits Resources website. You also may request a paper copy of the SPDs by contacting the Duke Energy myhr Service Center at 888.465.1300. myhr, Your Benefits Resources and Your Spending Account are trademarks of Hewitt Management Company LLC. Cigna is a registered service mark of Cigna Intellectual Property Inc., licensed for use by Cigna Corporation and its subsidiaries. CVS Caremark is a registered mark of Caremark LLC. UnitedHealthcare and NurseLine SM are registered marks of UnitedHealth Group Inc. Vision Service Plan is a registered mark of Vision Service Plan. 2016 Duke Energy Corporation 162396 9/16 18

2017 Duke Energy Active Medical Plan Options Administered by UnitedHealthcare Plan Highlights Health Savings Plan 1 1 Health Savings Plan 2 1 PPO In-Network Out -of-network In-Network Out -of-network In-Network Out -of-network Co-insurance (plan pays) 80% 60% 2 80% 60% 2 80% 60% 2 Individual/Family Deductible $2,500/$5,000 3 $5,000/$10,000 3 $1,500/$3,000 3 $3,000/$6,000 3 $600/$1,200 $1,200/$2,400 Individual/Family OOP Max (includes deductible) $5,000/$10,000 4 $10,000/$20,000 $3,500/$7,000 4 $7,000/$14,000 $2,500/$5,000 $5,000/$10,000 Preventive Care $0 $0 $0 Co-insurance Co-insurance Co-insurance Office Visit (Primary) $25 5 Co-insurance Co-insurance Co-insurance Co-insurance Co-insurance 5 Office Visit (Specialist) $35 5 Co-insurance Co-insurance Co-insurance Co-insurance Co-insurance 5 Inpatient Admission (Precertification required) Co-insurance Co-insurance Co-insurance Co-insurance Co-insurance 5 Co-insurance 5 Emergency Room Co-insurance Co-insurance Co-insurance Co-insurance $150 5 $150 5 Urgent Care Co-insurance Co-insurance Co-insurance Co-insurance $50 5 $50 5 PRESCRIPTION DRUG COVERAGE Administered by CVS Caremark Individual/Family Prescription OOP Max Preventive Medications 6 (you pay) 30-day supply (you pay): Generic Preferred Brand Non-preferred Brand 90-day supply 9 (you pay): Generic Preferred Brand Non-preferred Brand Included with medical (above) Included with medical (above) $2,000/$4,000 $0 Co-insurance for medications not designated as preventive Co-insurance for medications not designated as preventive Full cost at point of sale 7 $0 Full cost at point of sale 7 Full cost at point of sale 7 N/A Co-insurance for medications not designated as preventive Co-insurance for medications not designated as preventive Full cost at point of sale 7 Same as 30-day & 90-day pricing shown below Lower of $10 or cost of medication 8 25% up to $50 8 50% up to $100 8 This document contains selected highlights of Duke Energy s employee benefits plans. If any statement herein, or any other communication, conflicts with the applicable plan documents, the plan documents will govern. Duke Energy retains the right to amend, modify or terminate its benefits plans in any respect and at any time, and neither its benefits plans nor your plan participation will be considered a contract for future employment. N/A Lower of $25 or cost of medication 8 25% up to $125 8 50% up to $250 8 OOP = Out-of-Pocket 1 All expenses are subject to the deductible and apply to the OOP maximum, excluding certain preventive care expenses and preventive medications 2 Subject to reasonable and customary charges 3 The deductible is a true family deductible; the full family deductible amount must be reached before the Medical Plan pays any benefits for any covered member of the family 4 The OOP maximum will be no more than $6,850 for any one individual 5 Amounts apply to the medical OOP maximum 6 As included on the CVS Caremark Preventive Therapy Drug List 7 Must file manual claim. CVS Caremark will reimburse using the negotiated price of the medication, less the required co-pay and/or co-insurance, as applicable. 8 Per medication purchased and applied toward only the prescription drug coverage OOP maximum 9 Can be filled at a CVS Retail Pharmacy or through the CVS Caremark Mail Service Pharmacy #1 Full cost at point of sale 7 N/A

2017 Duke Energy Active Dental Plan Coverage Administered by Cigna #1 Plan Highlights Annual deductible Individual Family Annual maximum benefit Preventive care (plan pays) Basic services (plan pays) Major services (plan pays) Orthodontia up to age 19 (plan pays) Orthodontia limits $50 $150 $1,500 per individual 100%, no deductible 80% after deductible 50% after deductible 50%, no deductible $2,000 separate lifetime maximum per individual 2017 Duke Energy Active Vision Plan Coverage Administered by Vision Service Plan, or VSP Plan Highlights In-Network Out-of-Network Eye Exam, once every calendar year 100% covered Up to $50 reimbursement Standard plastic lenses (single vision, bifocal or trifocal), one pair every calendar year $20 co-pay Up to $50, $75 or $100 reimbursement (single, bifocal or trifocal) Standard progressive lenses, one pair every calendar year $55 co-pay Up to $75 reimbursement Frames, one pair every other calendar year Contact lens 1 services (fitting & evaluation and materials), once every calendar year (in lieu of lenses & frames) $20 co-pay $140 allowance plus 20% off any amount over $140 15% off contact lens exam (fitting and evaluation) $170 allowance Up to $70 reimbursement Up to $110 reimbursement Laser vision correction 15% discount N/A 1 Elective Conventional (non-disposable) & Disposables Cigna is a registered service mark of Cigna Intellectual Property Inc., licensed for use by Cigna Corporation and its subsidiaries. CVS Caremark is a registered mark of Caremark LLC. UnitedHealthcare is a registered mark of UnitedHealth Group Inc. Vision Service Plan is a registered mark of Vision Service Plan. This document contains selected highlights of Duke Energy s employee benefits plans. If any statement herein, or any other communication, conflicts with the applicable plan documents, the plan documents will govern. Duke Energy retains the right to amend, modify or terminate its benefits plans in any respect and at any time, and neither its benefits plans nor your plan participation will be considered a contract for future employment.