Buying green electricity for your home

August 19, 2019

An important way to combat climate change is to switch our electricity supply to “green” electricity (generated from wind- and solar-powered sources, both of which do not emit carbon dioxide).

Electricity generation is the single largest source of U.S. carbon dioxide emissions. Electricity sold by Pepco in Maryland in 2018 was generated mostly by coal (32.7%), natural gas (24.8%), and nuclear (36.5%) – only 3.3% came from wind and solar.

Scientists tell us we need to switch to clean electricity without delay.  By buying electricity from wind and solar power, and/or by supporting community solar power projects, you are helping support the stronger U.S. green electricity industry essential for that transition. Below is a guide prepared by the Montgomery County Faith Alliance for Climate Solutions (MC-FACS):


How to buy green electricity without installing solar panels

The following information is focused on helping residents of Montgomery County, who cannot install (or prefer not to install) rooftop solar, buy green electricity.  You can make the switch to green energy by:

  • purchasing green electricity from companies that provide wind and solar energy; OR
  • subscribing to a community solar project based in Maryland, which can save you money on your overall electricity expenses.

This guide does not cover companies that install solar panels on your rooftop; the MC-FACS Clean Electrons subgroup recommends that as a third step if possible. An excellent source of help on rooftop solar is the non-profit Solar United Neighbors of Maryland, which organizes cooperative purchases and installation of solar panels for residents in Montgomery County.


Option 1: Green-e Certified Suppliers of Renewable Electricity

Many suppliers offer green electricity for purchase by Montgomery County residents, but their offerings can be difficult to compare – due to differing terms, conditions, and other relevant considerations. The MC-FACS Clean Electrons subgroup reviewed offerings in mid-2018 from all known suppliers for Montgomery County, and updated this information in October 2020.

Green-e is the trusted global leader in clean energy certification. They make it easy for businesses and individuals to purchase verified clean energy with confidence, and for consumers to choose sustainable products and services. Green-e advocates for the advancement of clean energy policy, markets, and technology, and believes in their economic and environmental benefits. Here are the companies whom have been certified as of August 2019 and recommended by MC-FACS:

Supplier, Product Name, Renewable Content, and Web Address Price*
Note: Prices change frequently, check the website to verify current rates. 
AEP Energy

ECO-Advantage 100% Renewable Fixed Price Offer

(100% Wind)

7.79 cents/kWh
  • Large multistate utility
  • 12-month contract
  • Cancel at any time, for any reason, without penalty.
  • Better Business Bureau rating = A+
  • When on AEP’s website, be sure to pick the plan with the wind turbine symbol.
Groundswell/WGL Energy Services

100% National Wind Power

(100% Wind)

8.60 cents/kWh (12-month)

8.70 cents/kWh (24-month)

  • Local, renewable energy non-profit
  • Has supply agreement with WGL Energy Services, an affiliate of Washington Gas Light.
  • 12-month or 24-month contracts
  • Cancellation fee is $10 for each month remaining on the contract.
  • Better Business Bureau Rating = A+

*For Pepco Maryland customers; different prices apply for BGE or Potomac Edison customers. Compare price to Pepco’s price of electricity (for October 1, 2020 to May 31, 2021) of 8.35 cents/kWh. Pepco’s electricity is about 3% wind and solar; the rest is mostly coal, natural gas, and nuclear. The rates in this table would result in a savings of $5.46 (in the case of AEP) or add either $2.44 or $3.41 (in the case of Groundswell’s two options) to the average monthly electric bill of $127.92 for a residence in Maryland.

What to consider in buying green electricity

Under Maryland law, you can choose a supplier for your electricity other than Pepco (or BG&E or Potomac Edison if you live in the part of Montgomery County that they serve).  Your monthly electric bill will then have one payment with two parts – the first part to Pepco/BG&E/Potomac Edison as the distributor, to maintain the electric wires in your neighborhood; and a second part for your “electric supply” that goes to the supplier that you choose.

The process of signing up for a supplier is done online or by telephone and is simple – you will need to check your electrical bill to provide your current utility account number as part of the sign-up process.

The cost of green electricity is slightly higher than what Pepco/BG&E/Potomac Edison will charge for the “electric supply” part of your bill. For that reason, it is important to know that the green electricity you are paying extra for is
really “green.”

EPA recommends buying green electricity from suppliers that have undergone third-party validation – in the United States, the non-profit organization that provides that independent check is known as Green-e.

Signing up

When you sign up for a green electricity option, you will sign a fixed-price contract for a specific term (typically between 1 and 3 years). Some suppliers make you pay a penalty if you want to switch to another source of electricity before the contract term is up. If you want the flexibility to switch based on finding a better price, then you may want to pay attention to termination fees and consider a supplier that allows easy cancellation.

There are other differences among the types of suppliers in the marketplace that may be important to you. Some suppliers of green electricity are large multi-state utilities. They may have lower prices for green electricity.

Others are smaller, more local firms that are explicitly organized to operate on socially responsible business principles in addition to making a profit (“B Corporations”), or that have been certified for environmentally responsible business practices (for example, through the Montgomery County Green Business Certification Program). Their prices may be higher, but if you want your electricity purchase to support such socially beneficial goals, then you may want to consider this in choosing a clean electricity supplier.

The end of your contract

Shortly before the end of your contract, your green electricity supplier must inform you of your options, going forward:

  1. If you do nothing, some suppliers will automatically renew you for another fixed term at a different fixed rate that may be higher.
  2. They might put you on a variable rate that changes from month to month, which will likely also be higher.
  3. Others may return you to Pepco/BG&E/Potomac Edison as your supplier,taking you off the 100% wind/solar program.

It is important to pay attention to your options at the end of your contract term (be it 1 year from now or 3 years from now), so that you make a choice at that point that continues to provide you with the type of green electricity, cost, and other factors that you desire.


Option 2: Supporting Community Solar Projects

A complementary strategy to switching to the suppliers in the table on the preceding page is to support the development of solar generation facilities in Maryland through community solar projects. Maryland has a program that allows you to support such projects and receive a credit on your monthly electricity bill for the amount of electricity that you support from a given community solar project.

The first such project in the Pepco service area, now soliciting subscribers (organized by Neighborhood Sun) has a subscription rate for its power that is 5% less than the Pepco rate, resulting in an overall savings on a subscriber’s utility spending..

As a legal matter, you are not buying the solar power generated by the facility itself, but you are funding development of the generation facility while saving money overall. You can combine this support with buying your personal renewable energy through one of the suppliers in the first table in this guide.

MC-FACS recommends Neighborhood Sun and Groundswell. The MC-FACS Clean Electrons subgroup does not have experience with CleanChoice Energy for this community solar type of supply. SUN MD provides a listing of current and future community solar projects and other information on their website.

Links to information on companies and groups with active community solar projects in Maryland are provided below:

Download this guide here in English, Spanish, and French (About PDF). Data current as of October 2020.

This article was prepared in April 2019 by the Montgomery County Faith Alliance for Climate Solutions Working Group on Clean Electricity.  MC-FACS represents a diverse community of faiths, whose voices are valuable in the conversation on climate change, and whose faith-based actions draw on a deep well of love for each other and the planet we share. To join MC-FACS, sign up for announcements here (click “Apply for Membership”). To learn more about MC-FACS check out our Facebook page here

8 comments on "Buying green electricity for your home"

  1. Charles MacFarland says:

    Is there an equivalent organization to yours in Frederick County, which is where I live?

    1. Lindsey Shaw says:

      The Montgomery County Faith Alliance for Climate Solutions has a similar organization in Multi-faith Alliance of Climate Stewards – MACS of Frederick County, MD. You can learn more about their organization here:

      The Frederick County Office of Sustainability and Environmental Resources has additional resources about living sustainably here:

  2. Arnold J Kappeler says:

    Price at AEP website was 25% higher than the listed 7.79 cents/kWh on this page. I know that “Prices change frequently, check the website to verify current rates.”, but seriously?

    1. Lindsey Shaw says:

      Thanks for flagging this for us, Arnold! I’ve forwarded your note to the Montgomery County Faith Alliance for Climate Solutions Working Group on Clean Electricity to see if they’ve updated their guide recently that we share for them on My Green Montgomery.

  3. G Herderschee-Hunter says:

    Could you please update this web site? Only two options listed and the web link for groundswell does not work.

    Also please provide price to compare info to compare with current electricity supplier (PEPCO).


    1. Lindsey Shaw says:

      Hi there! Since this blog was originally published, the Maryland PSC developed a more user friendly site for reviewing electricity suppliers: Please use this new website to research and compare electricity suppliers.

  4. Bart Landry says:

    I am interested in finding a company that sells clean energy.
    You have listed AEP Energy and
    WGL Energy – Groundswell.

    This listing was for April 2019.
    AEP no longer works with Pepco (my provider).

    Do you have any new recommendations since April 2019?

    1. Lindsey Shaw says:

      Since this blog was originally published, the Maryland PSC developed a more user friendly site for reviewing electricity suppliers: Please use this new website to research and compare electricity suppliers.

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