OUR MISSION: To provide our customers with high-quality, efficient and reliable water, power and sewer services in a manner that values environmental and community interests and sustains the resources entrusted to our care.
OUR MISSION: To provide our customers with high-quality, efficient and reliable water, power and sewer services in a manner that values environmental and community interests and sustains the resources entrusted to our care.
525 Golden Gate Avenue, 13th Floor
San Francisco, CA 94102
T 415.554.3155
F 415.554.3161
TTY 415.554.3488
Date: May 12, 2023
To: Newsha K. Ajami, President
Sophie Maxwell, Vice President
Tim Paulson, Commissioner
Anthony Rivera, Commissioner
Kate H. Stacy, Commissioner
Through: Dennis J. Herrera, General Manager
Barbara Hale, Assistant General Manager, Power
Michael Hyams, Deputy AGM, Power - CleanPowerSF
Catherine Spaulding, Deputy AGM, Power - Programs & Planning From: James Hendry, Regulatory and Legislative Affairs
Colten Krieg, CleanPowerSF Operations
Subject: Annual Report to the California Energy Commission by CleanPowerSF and Hetch Hetchy Power on their Sources of Electric Energy and Greenhouse Gas Intensity
Summary
CleanPowerSF and Hetch Hetchy Power will submit their respective Power Source Disclosure reports for calendar year 2022 to the California Energy Commission no later than June 1, 2023, as required by statute. 1 The P ower Source Disclosure report shows the sources of energy used to meet electric demands as well as the greenhouse gas intensity of each retail electricity product. All California retail providers of electric energy are required to use a consistent methodology to calculate the greenhouse gas intensities of their products. This memo summarizes the dat a reports that will be provided to the California Energy Commission.
CleanPowerSF
CleanPowerSF provides three products for which separate power source disclosure reports are required:
1 Public Utilities Code Sections 398.4 and 398.5.
jeh
• Green
• SuperGreen
• SuperGreen Saver
Green Product
For calendar year 2022, CleanPowerSF’s Green product energy mix was:
• 59.9% California Renewable Portfolio Standard Energy Resources2 ▪ 25.3% Solar
▪ 24.3% Geothermal
▪ 10.2% Wind
• 37.2% Greenhouse gas-free hydroelectric generation
• 2.9% Unspecified Sources of Power3
20.7% of CleanPowerSF’s Green product power supply came from renewable energy facilities located within the nine-county Bay Area. CleanPowerSF Green product customers’ demand was also met with renewable and hydroelectric supply from facilities located elsewhere in California, Washington, Idaho and British Columbia, Canada.
CleanPowerSF’s Green product greenhouse gas intensity was 47 pounds of carbon dioxide equivalents per megawatt -hour (CO2e/MWh) of electricity delivered. By comparison, the state -wide average for California in 2021 (latest available data) was approximately 456 pounds of CO2e/MWh, almost ten times higher.4
The Commission, through SFPUC Resolution 17 -0101, adopted a target of 50% California Renewable Portfolio Standard -eligible renewable energy by the end of 2020 for CleanPowerSF’s Green product. In its 2022 Integrated Resource Plan, CleanPowerSF established annual renewable energy planning targets to guide procurement activity to achieve a 100% renewable supply by 2025. The 2022 target was 5 8% of supply from California Renewable Portfolio
2 These are energy resources that meet the requirements of California’s Renewable Portfolio Standard.
3 “Unspecified sources of power” means electricity from transactions that are not traceable to specific generation sources. For CleanPowerSF this consists of purchases from the California Independent System Operator.
4 This number is an average of all load serving entities across California in 2021. This figure was included on the 2021 Power Content Label sent to customers by October 1, 2022. The Power Content Label allows customers to easily compare the resource breakdown and emissions intensity of their electricity product with the State’s as a whole.
Standard eligible renewable energy and 33% additional greenhouse gas fr ee hydroelectric resources. CleanPowerSF exceeded these program planning targets by delivering 59.9% California Renewable Portfolio Standard -eligible renewable energy and 37.2% hydroelectric energy to Green product customers in 2022 for a total renewable energy content of 97.1%.
SuperGreen
For calendar year 2022, CleanPowerSF’s SuperGreen product energy mix was:
• 100% California Renewable Portfolio Standard Energy Resources ▪ 50% Solar
▪ 50% Wind
All SuperGreen generation came from new renewable energy facilities built in California that either first reached commercial operation since CleanPowerSF began serving customers in 2016 or are located within San Francisco (Sunset Reservoir, which began operating in 2010).
The greenhouse gas emissions intensity of the SuperGreen product was 0 pounds of CO2e/MWh.
SuperGreen Saver
In 2022, CleanPowerSF added SuperGreen Saver, a new product available for CleanPowerSF low-income customers5 who live in the top 25% most disadvantaged communities ( DACs)6 in San Francisco (see Figure 1 below) .
CleanPowerSF’s service territory includes 1 7 disadvantaged community census tracts.7
5 Low-income eligible customers must be eligible for and enrolled in either the California Alternate Rates for Energy Program (CARE) or Family Electric Rate Assistance Program (FERA). These programs provide monthly discounts on energy for income-qualified customers. 6 Disadvantaged communities are determined as such by the California Communities Environmental Health Screening Tool, developed by the California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment. Commonly known as CalEnviroScreen, the tool is a screening methodology that can be used to identify California communities that are in the top 25% of census tracts disproportionately burdened by multiple sources of pollution.
7 In figure 1, the red areas represent the 25% highest scoring census tracts in the CalEnviroScreen 4.0 tool. The blue areas represent census tracts previously identified in the top 25% in CalEnviroScreen 3.0; this version was superseded by CalEnviroScreen 4.0 but CleanPowerSF customers in these census tracts remain eligible for SuperGreen Saver.
Customers living in the census tract on Treasure Island and Yerba Buena Island are entirely served by Hetch Hetchy Power, San Francisco’s municipal electric utility.
Figure 1. State-designated Disadvantaged Communities in San Francisco For calendar year 2022, CleanPowerSF’s SuperGreen Saver energy mix was:
• 100% California Renewable Portfolio Standard Energy Resources ▪ 100% Solar
SuperGreen Saver generation came from a new renewable energy facility built and operating in a disadvantaged community in California.
The greenhouse gas emissions intensity of the SuperGreen Saver product was 0 pounds of CO2e/MWh.
Hetch Hetchy Power
Hetch Hetchy Power provides two products for which separate power source disclosure reports are required:
• Hetch Hetchy Power (Basic Service)
• Hetch Hetchy Premium
Hetch Hetchy Power (Basic Service)
For calendar year 2022, Hetch Hetchy Power (Basic Service) product energy mix was:
• 100% Greenhouse gas-free hydroelectric generation
Hetch Hetchy Power (Basic Service) generation came from its Holm, Moccasin, and Kikwood hydroelectric power plants meeting 99% of customer needs with the remaining 1% consisting of zero-greenhouse gas hydroelectric power delivered by the Western Area Power Administration to serve Treasure and Yerba Buena Islands.
The greenhouse gas emissions intensity of this product was 0 lbs CO2e/MWh.
Hetch Hetchy Power also had additional Renewable Portfolio Standard-eligible generation above its retail needs from solar generation (e.g. Sunset Reservoir and other in-city solar installations), biomass generation from the Southeast Cogeneration Plant, and hydroelectric generation from the Kirkwood hydroelectric facility. The renewable energy credits associated with this generation will be carried over and can be used to meet Hetch Hetchy Power’s Renewable Portfolio Standard obligations in future years if needed.
Hetch Hetchy Premium
For calendar year 2022, Hetch Hetchy Premium energy mix was:
• 100% California Renewable Portfolio Standard Energy Resources • 100% Hydroelectric generation (Kirkwood) 8
The greenhouse gas emission s intensity of Het ch Hetchy Premium was 0 lbs CO2e/MWh.
This Premium service allows customers such as the San Francisco Municipal Transportation Agency and the Port of San Francisco to receive additional credits under the California Air Resources Board’s Low Carbon Fuel Standard program. This program rewards entities such as the San Francisco Municipal Transportation Agency and the Port that use electric energy, instead of fossil fuels, for transportation-related uses.
NEXT STEPS
Attestation of Veracity in September
8 Although all Hetch Hetchy hydroelectric generation is renewable and GHG-free, not all of this generation meets the definition of renewable energy used for California’s Renewable Portfolio Standard.
After the SFPUC’s Power Enterprise and other retail sellers of electricity submit their Power Source Disclosure reports to the California Energy Commission, the California Energy Commission will compile the reports and calculate the state-wide average of energy resources by type and greenhouse gas -intensity.
The Power Enterprise will then prepare the CleanPowerSF and Hetch Hetchy Power Power Content Labels which compare the results summarized here against the state-wide average. The Power Enterprise will then send (either by e-mail or postal service) the Power Content Label for each program to its customers as well as post them on the SFPUC’s website. The California Energy Commission requires this to occur by October 1, 2023.
California Energy Commission regulations require that the Commission attest to the veracity of both the Power Source Disclosure report as well as the Power Content Label by October 1 st of each calendar year. As the Power Content Label template is not available by the June 1, 2023 Power Source Disclosure report submission date, staff are providing this memo advising the Commission and the public of the source s of power for our two programs. Staff will bring two resolutions for the Commission’s approval that will attest to the veracity of the CleanPowerSF and Hetch Hetchy Power Power Source Disclosure reports and Power Content Labels to a September 2023 Commission meeting.