Green Power blue collar
     renewable energy for real people          
dollars and Sense


Heating and cooling with geothermal energy system. Geothermal energy is heat from within the earth. We can use the steam and hot water produced inside the earth to heat buildings or generate electricity. Geothermal energy is a renewable energy source.

Solar Power:  Photovoltaic (PV) panels convert the light of the sun into electricity by "capturing" electrons that are knocked loose by the sunlight hitting the panel.  There are two types of solar power - solar electric (for electricity) and solar thermal (to heat hot water).

My primary goal is to make renewable energy not only affordable, but profitable for real people in neighborhoods just like your own.

 


According to the U.S Environmental Protection Agency, GeoExchange systems, such as the one designed and installed by Davis Dwyer, for Michael and Beth Yerkes, can cut heating costs by 30-70 percent and cooling costs by 20-50 percent compared with conventional systems, as well as deliver an immediate reduction in greenhouse gasses -equivalent to taking two cars off the road each year. (Orzech, Dan. "Geothermal: Heat without the Burn" Natural Home July/August 2007)

year  annual cash savings   fv of savings  accumulated
$(3,600.00)  ($13,930.86)  ($13,930.86) 
$3,868.00  $13,988.73  $57.86 
$2,171.00 $7,337.83 $7,395.70 
$2,505 .00 $7,912.83  $15,308.53 
$2,874 .00 $8,484.52  $23,793.05 
$3,282 .00 $9,055.14  $32,848.19 
$3,732.00 $9,623.09  $42,471.28 
$4,231.00 $10,196.05  $52,667.33 
$4,782.00 $10,769.98  $63,437.31 
$5,391.00 $11,347.26 $74,784.57 
10  $6,063.00 $11,926.84  $86,711.41 
11   $6,806.00 $12,512.55  $99,223.96 
12  $7,624.00  $13,099.45  $112,323.41 
13  $8,530.00  $13,697.32  $126,020.73 
14  $9,527.00  $14,297.46  $140,318.19 
15  $10,626.00  $14,903.51  $155,221.70 
16  $11,843.00  $15,523.76  $170,745.46 
17  $13,182.00  $16,148.52  $186,893.98 
18  $14,660.00  $16,784.23  $203,678.61 
19  $16,289.00  $17,429.23  $221,107.44 
20  $18,087.00  $18,087.00  $239,194.44 

Column 1: Annual cash savings harnessed by renewable system vis-à-vis performance of conventional HVAC system.

Column 2: Future value of each year's cash savings invested at 7% for 20 years.

Column 3: The cumulative value of savings reinvested in each year, 1 through 20.

Adding it up:
Long Term Savings with Alternative Energy


Lower energy bills and various tax rebates and incentives allow homeowners to quickly recoup the initial cost of geothermal systems.

After receiving a $5,000.00 rebate from the Illinois
state government, Michael and Beth Yerkes paid about $30,000.00 more for their geothermal system than for a traditional heating/cooling system. But because the geothermal system's ignition is electrically powered and uses no natural gas, the annual operating cost is significantly lower. The yearly cost of the conventional system is estimated at approximately $7,090.00 and that of the geothermal system at $1,630, an annual savings of $5,460.00 each year. At that rate, without factoring in energy price changes (the U.S government maintains that price of 1,000 cubic feet of natural gas has risen 71% -from $7.00 in 2001 to $12.00 in 2006), the difference between the conventional and geothermal systems would be made up in about six years. (Rankin, Rose. "Carbon-Neutral in the Windy City" Natural Home  July/August 2007)