What is geothermal?

Heat and cool with dirt, not oil. Yes, Dirt. The ground beneath your feet is being used by millions to heat and air condition their homes. Geothermal heating and cooling is 4 times as efficient, costs less to operate, and can be a smart investment.

The Maryland Geothermal Association is focused on state legislation which will advance adoption of geothermal in Maryland.

We Need Your Support.

To join us in our goal of passing legislation that advances geothermal adoption in Maryland please become a member.

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Geothermal Explained

Geothermal Works All Year Round. Day & Night.
Geothermal Heating and Cooling is often referred to as Geoexchange, Geothermal, or Ground Source Heating and Cooling. … more
The Under Ground Loop Field
A geothermal heat pump system consists of two primary components, a heat pump and a loop field… more
Sizing a Residential System
Geothermal heat pumps vary in size from home to home. There are a number of factors that … more
Federal Tax Credits This Year
The new law extends the credits for GHP installations through 2032… more
Environmental Impact
The U.S. Environmental Protection Agency (EPA) has called ground source… more

Let's Decarbonize Marylands Buildings

The Maryland Geothermal Association (MGA) is a non-profit trade organization that was formed in 2013 in order to promote the development and installation of highly efficient geothermal heating and cooling systems for both residential and commercial applications.

The support of our members has allowed us to visit capitol hill, and Annapolis helping to secure progress like the recent extension of the federal Tax Credit.
  • 30% Federal Tax Credit for the next 10 Years!
  • Geothermal Renewable Energy Credits!
  • No limit to credit amount!
  • Commercial credits 10%, and Accelerated Depreciation!

The Maryland Geothermal Association (MGA) is a non-profit trade organization that was formed in 2013 in order to promote the development and installation of highly efficient geothermal heating and cooling systems for both residential and commercial applications. We are the installers, drillers, excavators, manufacturers, and distributors who make geothermal possible in the state of Maryland.

Through the mutual formation of key relationships, MGA provides education, training, sales support, networking and advocacy for residential and commercial contractors and distributors, as well as consumers, business property owners and government agencies.

We are fully dedicated to the promotion of efficient geothermal ground source energy throughout Maryland for the purpose of producing maximum economic and environmental benefits, as well as contributing to important public policy goals utilizing clean renewable energy.

We would not be able to continue this work without the help of our Key Sponsors. We appreciate any support with our sponsors as supporting them supports the Maryland Geothermal Association!


ClearPath Renewables                                                  ISCO SOLUTIONS                                                      Carbon Solutions Group









Become a MemberBecome a Sponsor