The spreadsheet opens in a new window, so you can view it and follow the instructions at the same time.
1 - Insert the figure you estimate to be the cost of installing a geothermal system. Please see the Manitoba Hydro website for estimated costs. (Scroll down the page until you see the retrofit or new construction links)
2 - Insert the figure you estimate to be the cost of installing conventional heating/cooling. (ie: gas furnace, electric furnace, wood/electric, central air, etc)
3 - This is a precalculated figure based on (1) and (2).
4 - Insert the interest rate you would expect to earn on an investment.
5 - Insert the total energy cost for your home.
6 - Calculate the portion of your electric bill which applies to heating only. IE: exclude the cost of lighting, running appliances etc.)
7 - A pre-calculated figure. The result is what your annual energy bill will be with a geothermal system.