In just four years, MCE customers have eliminated 122,120 metric tons of greenhouse gas emissions. It takes all of the trees in Muir Woods 180 years to sequester that much carbon!

15 Power Suppliers

Where Our Power Comes From

We procure our energy from clean, renewable sources such as solar, wind, bioenergy, geothermal, and small hydroelectric. We closely research and monitor our suppliers to ensure that they are using green, responsible practices and sourcing our power from renewable energy providers throughout California, Oregon, and Washington. Not only is our power greener, it’s also as local as possible. See our power sources in our 2015 Power Content Label.

Why Renewable Energy Matters

Fossil fuels and the conventional energy we use to power our homes and businesses are directly linked to harmful greenhouse gases, so MCE’s mission is to make it easier for customers in Marin and Napa Counties, and the cities of Benicia, El Cerrito, Lafayette, Richmond, San Pablo, and Walnut Creek to use a higher percentage of renewable energy instead of traditional oil, nuclear, and coal sources. Our number one goal is to offer responsible, reliable energy to our customers.

For our Deep Green customers, we buy 100% renewable power. And for Local Sol customers, we source 100% new solar power from local sites within our service area.

Growing Renewable Development

MCE has 50 energy project contracts with 15 different suppliers, and that number will continue to grow. We currently have more than 195 megawatts of new, California renewable energy under development for our customers. We’re also committed $516 Million to the development of local renewable energy projects within our service area. 

Integrated Resource Plan

We follow an annually updated Integrated Resource Plan to determine our electricity resource needs and guide our procurement process. Our goals include a long-term objective of 100% renewable energy for all customers, as well as short-term goals that set local parameters around electricity procurement and storage. We are aiming to provide our Light Green customers with 80% renewable and 95% carbon-free power by 2025. 

Energy Source FAQs

To help facilitate the sale of renewable electricity nationally, a standard industry-wide system has been established that separates renewable electricity generation into two parts: the electricity or electrical energy produced by a renewable generator and the renewable “attributes” of that generation. The renewable attributes, or “green” attributes, can be sold separately as RECs. The electricity that was split from the REC is no longer considered “renewable” and cannot be counted as renewable or zero-emissions by whomever buys it. The REC product is what conveys the attributes and benefits of the renewable electricity, not the electricity itself. RECs, which have been endorsed by the U.S. Environmental Protection Agency, are also an integral element of affordable, voluntary green pricing programs, such as the Sacramento Municipal Utility District’s Greenergy®, the City of Palo Alto (Palo Alto Green), and Silicon Valley Power (Santa Clara Green Power), as well as by PG&E.

RECs provide buyers with flexibility in procuring green power across a diverse geographical area and in applying the renewable attributes to the electricity use at a facility of choice. This flexibility allows organizations to support renewable energy development and protect the environment when green power products are not locally available.

For more information, please visit the U.S. EPA website.

We are required to report to the California Public Utilities Commission and California Energy Commission on an annual basis to verify the amount of renewable energy procured for our customers. This is the same standard used by other California utilities, such as PG&E, for verification purposes.

Green-e Energy, an independent third-party, also verifies MCE’s Deep Green 100% renewable energy supply and ensures that it meets the minimum environmental and consumer protection standards established by the non-profit Center for Resource Solutions. Learn more about green power certification from the United States Environmental Protection Agency.

We have short and long-term contracts with a variety of power suppliers to meet the energy needs of our customers. Each year, we host an “open season” process where developers or owners of renewable energy projects can propose contracts. We also operate a Feed-In Tariff program, through which local developers can create and sell small renewable energy projects directly to us at a set price, provided that they are located in our service area.
Our energy is mostly produced from non-polluting, renewable sources such as solar, wind, geothermal, hydroelectric, and bioenergy. The projects that produce our electricity are located in California, Oregon, and Washington State. The exact proportion of each varies with time, based on demand and availability. For example, MCE may use a higher proportion of hydroelectric energy during the spring and summer months when winter run-off generates more power at affordable prices. Learn more about MCE’s power sources.
MCE procures 50-100% renewable electricity on behalf of our customers. Our customers have the option of choosing between three ultra-green renewable energy products. Light Green is 50% renewable, Deep Green is 100% renewable, and Sol Shares is 100% local solar.

MCE also purchases large hydroelectric, which some consider “clean” because it is greenhouse gas–free. MCE does not make specific nuclear purchases. More about your energy choices.