Renewable energy is obtained from sources that don’t run out — hydroelectric, geothermal, wind, biomass, photovoltaic, and solar-thermal power. Renewable energy is becoming more popular as the technology improves and the cost comes down.
Geothermal energy, the energy stored in the earth, can be harnessed for heating buildings and water. Geothermal or ground source heat pump systems use pipes installed in the ground. Water or a mixture of water and antifreeze are circulated through the pipes to absorb heat from the surrounding soil. In hot weather, the process is reversed, cooling the house by using the ground as a heat sink.
Solar photovoltaic systems use the sun’s energy to convert solar energy directly into electricity. Howard County has implemented several solar demonstration projects. Please visit the Howard County Renewable Energy page for details.
Retrofit Baltimore is a non-profit group helping Maryland residents by making it easier and more affordable for residents to go solar and improve overall energy efficiency. Retrofit Baltimore provides reliable information and connects homeowners with vetted and screened contractors. Based on a similar process as buying in bulk, interested homeowners may receive a discount of up to 25%. It is not just for Baltimore residents. Here is the Retrofit Baltimore solar webpage.
Besides installing renewable energy systems in your home, residents can encourage renewable energy by purchasing renewable energy through your electric company. BGE, for instance, allows you to change your energy supplier within their system.