Seattle City Light 2016 ANNUAL REPORT | Audited Financial Statements 84 THE CITY OF SEATTLE—CITY LIGHT DEPARTMENT OTHER INFORMATION (UNAUDITED) - 84 - CUSTOMER STATISTICS Years ended December 31 2016 2015 2014 2013 2012 Average number of customers: * Residential 397,074 381,419 374,619 367,837 362,658 Non-residential 50,258 41,391 40,437 40,218 39,950 Total 447,332 422,810 415,056 408,055 402,608 Megawatt-hours (b) : Residential 32% 2,917,984 32% 2,914,563 32% 2,987,711 33% 3,158,629 34% 3,098,745 Non-residential 68% 6,262,454 68% 6,242,931 68% 6,352,873 67% 6,347,771 66% 6,367,897 Total 100% 9,180,438 100% 9,157,494 100% 9,340,584 100% 9,506,400 100% 9,466,642 Average annual revenue per customer (b) : Residential $ 717 $ 691 $ 695 $ 710 $ 664 Non-residential $ 9,983 $ 11,390 $ 11,448 $ 10,820 $ 10,603 * Seattle City Light changed customer counts to Service Agreement effective September 2016 with the implementation of the new retail electric billing system. Service Agreement determines how Seattle City Light and Seattle Public Utilities charge customers for services provided. An account can have several Service Agreements for the different types of services. No revisions were made to prior year customer counts. Years ended December 31, 2016 2016 2015 2014 2013 2012 Average annual consumption per customer (kWhs) (a)(b) : Residential - Seattle 7,349 7,641 7,975 8,587 8,545 - National n/a 10,816 10,936 10,916 10,837 Non-residential - Seattle 124,606 150,828 157,107 157,834 159,399 - National n/a 125,592 126,114 125,871 125,674 Average rate per kilowatt-hour (cents) (a)(b) : Residential - Seattle 9.75 9.05 8.71 8.27 7.77 - National n/a 12.65 12.52 12.12 11.88 Non-residential - Seattle 8.01 7.55 7.29 6.86 6.65 - National n/a 9.08 9.20 8.84 8.64 (a) Source of national data: Department of Energy (www.eia.doe.gov/electricity/annual/) 2016 National average annual consumption data and average rate data not available. Certain 2015-2012 National average annual consumption and national average rate data were updated with revised actuals. (b) Seattle amounts include an allocation for the net change in unbilled revenue. Unbilled revenue excludes retail customer voluntary payments for conservation NOTE: A comprehensive rate change of 4.9% became effective January 1, 2016. Effective August 2016, a 1.5% RSA rate was applied to all residential and non-residential rates schedules. Notice of public hearings on future rate actions may be obtained on request to: The Office of the City Clerk, 600-4th Ave, Floor Three, Seattle, WA 98104. Phone number 206-684-8344. Additional information about Council meetings can be found on the Web at www.seattle.gov/council/calendar.