Residential savings

Investing in a geothermal system can cut residential energy costs by 30 percent over natural gas systems, and up to 50 percent over electric resistance heating. Over the life of the system, you could expect to save $20,000 on your utility bills.

For comparison, a high-efficiency natural gas furnace would have an efficiency of 92 percent, meaning 92 cents out of every energy dollar used is put back into your home in the form of warmed air. If you have an older home, you might be replacing a furnace or boiler with an efficiency of 60 percent or even less.

The cost of an average three-ton geothermal system for a 2,000 square foot home is comparable to a traditional system. You'll also need to consider the added cost of installing the ground loop. This will vary on the type of loop chosen.

Geothermal in Action: Residential

Business savings

With the recent volatility in natural gas prices, energy efficiency is an investment that will help protect your bottom line for years to come.

In addition to energy savings, your business will also benefit from lower maintenance costs, more usable space and better comfort for employees and customers.

While geothermal system may be more expensive to install, they can pay back the difference in energy savings in just a few years. And they can typically pay back the full cost in less than 5 years.

According to the U.S. Environmental Protection Agency, geothermal systems average 40 percent greater efficiency than air-source heat pumps, 48 percent better than natural gas furnaces and 75 percent better than oil furnaces.

Geothermal in Action: Commercial & Government

Geothermal in Action: Schools & Churches

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Learn more about:

Resources: Incentives & Financing

Resources: Dealer Locator

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Brochures and fact sheets:

GeoThermal: Bringing Comfort to Your World
By Alliant Energy
[PDF format – 7 pages, 174kb]

More brochures and fact sheets….