energy costs

We can can estimate the payback time for energy investments, but since energy costs are escalating, the payout is even faster, making your investment even smarter.  Electricity in Pennsylvania is scheduled for deregulation in 2011.  Costs are predicted to go up by 40%.  Therefore your investment in energy conservation and efficiency will pay back even faster, trumping most any other investment you can make.  And remember, once the investment payback is over, it's pure savings. 

See tables below showing rates for electricity & natural gas in the Philadelphia region over the past 10 years.