There are federal and state tax credits and some utility company rebates when you install a new Energy Star approved ground source system by a certified installer.
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GS systems eliminates the possibility of carbon monoxide poisoning inside a building–another environmental plus–because the system moves natural heat rather than burning a fossil fuel like
oil, natural gas or propane to create heat.
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GS systems represent huge savings on utility bills of up to 30% to 70% in the heating mode and up to 20% to 50% in the cooling mode compared to conventional systems.

A standard 200-amp electrical service will have more than enough capacity to power a geothermal heat pump.
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The Department of Energy (DOE) and the Environmental Protection Agency (EPA) have both endorsed ground source heat pump systems as among the most energy efficient & environmentally friendly heating, cooling & water heating systems available*.
*Source: International Ground Source Heat Pump Assoc. (IGSHPA)
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The types of ground loops include open loop or closed loop and these loops can be installed three different ways: horizontally, vertically or in a pond/lake.