Description 
You can enter a description of this calculation in the box
below. 



Investment Cost of Measure 
Enter the upfront cost of the efficiency measure and the
number of years that the measure will produce savings. 
Cost of Measure: $ 
Life of Measure: years 


Annual Energy Savings 
Enter the dollars of energy savings that will be realized
from the measure in the first year. Also, select how fast you think energy prices will
increase in the future. 
First Year Savings: $ 
Energy Price Inflation: 


Annual Operating Cost Impact 
Enter any operating and maintenance cost impact caused by
the efficiency measure (not counting energy savings). If operating and maintenance costs
go up due to the measure, enter a positive number below. If operating costs decrease due
to the measure, enter a negative number. Also, enter your estimate of how fast the impact
will increase in future years due to price inflation. 
Operating Cost Impact: $ 
Op. Cost Inflation: 


Financing Interest Rate 
Enter the interest rate of the money that will be used to
finance this efficiency measure. NOTE: This input is only used in the net present
value calculation, not in the internal rate of return calculation. 
Financing Interest Rate: 
Click Here to Calculate the Results: 