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SFPUC Converts Digital Realty Data Center at 365 Main to GHG-Free Power
Leading global data center provider becomes one of SFPUC’s largest clean energy customers in SF
Posted Date: 4/10/2018 9:00 AM
San Francisco, CA—The San Francisco Public Utilities Commission (SFPUC) announced today that Digital Realty, a leading global data center provider, has switched to the SFPUC’s greenhouse gas-free Hetch Hetchy Power service for its 365 Main Street location. The move makes Digital Realty one of the SFPUC’s largest clean energy customers within the city limits of San Francisco. The project is expected to substantially reduce the City of San Francisco’s greenhouse gas emission profile.

“This project builds on our steadfast commitment to lower our overall carbon footprint, transitioning this data center to a regionally-sourced, zero greenhouse gas-emission power supply,” said Aaron Binkley, Director of Sustainability Programs at Digital Realty. “As a San Francisco-based company, clean power provided by the SFPUC allows us to make a difference in the local community and also advance our global commitment to reducing the environmental footprint of our data center portfolio.”

For its new energy supply, Digital Realty is sourcing clean electricity from the Hetch Hetchy Power System, which is operated by the SFPUC and comprised of three hydroelectric powerhouses: Moccasin Powerhouse, which includes a small, in-line hydroelectric unit, Kirkwood Powerhouse and Holm Powerhouse. The combined total hydroelectric generating capacity for these facilities is approximately 385 megawatts. The Hetch Hetchy Power System also features 22 solar arrays and two biogas facilities. In total, the Hetch Hetchy Power System provides greenhouse gas-free electricity for 17% of the City’s electricity demand.

The SFPUC’s Hetch Hetchy Power System represents some of the cleanest energy available in California. It does not produce any carbon emissions, nor does it produce any radioactive byproducts. By switching to the SFPUC’s Hetch Hetchy Power, Digital Realty will reduce its greenhouse gas emissions, and by extension, San Francisco’s greenhouse gases, by 24 million pounds of CO2 per year. That’s the equivalent of the electricity use of 1,600 homes for an entire year.

Read More: Hetch Hetchy Power System is cleanest, most cost-effective option for larger commercial and residential developments

SF’s Clean Energy Expert

As the City continues to eliminate carbon emissions from its electricity supply, the SFPUC is empowering residents and businesses with an array of programs and initiatives that make it easy to go green. In addition to clean Hetch Hetchy electricity, the SFPUC also offers San Francisco electricity customers CleanPowerSF (a clean energy partnership with PG&E). The SFPUC is also building a Hetch Hetchy electricity distribution line in the City’s Mission Bay Neighborhood to better connect future customers with Hetch Hetchy clean electricity. Additionally, this year, the SFPUC will bring online four new solar arrays totaling 400 kilowatts in new renewable generation for the City.

“San Francisco residents and businesses want cleaner energy at a competitive price and that’s exactly what the SFPUC offers,” said SFPUC General Manager Harlan L. Kelly, Jr. “Every new SFPUC power customer makes an immediate impact on San Francisco’s greenhouse gas emissions and helps us lower our City’s overall carbon emission profile. As the City’s clean, local energy provider, we will continue to work hard every day to bring clean, reliable energy to all San Francisco residents and businesses.”

Read More: Salesforce Joins CleanPowerSF

The San Francisco Public Utilities Commission provides retail drinking water & wastewater services to the City of San Francisco, wholesale water to three Bay Area counties, green Hetch Hetchy hydroelectric & solar power to electricity customers, and power to the residents & businesses of San Francisco through the CleanPowerSF program. For more information about the SFPUC’s clean electricity services, please visit