This document summarizes the energy consumption and costs for a proposed solar PV system installation on a 23,000 square foot building. The building currently uses 1,474 kWh per day of energy. A proposed 87.23 kW solar array using 363 panels could generate 462 kWh per day, providing 31.4% of the building's energy needs. The total installed cost of the system would be $390,880, but with a $100,000 rebate the net cost would be $290,880. This system would save $977 per month on electricity bills and have a 21.1 year return on investment.

1. Building Consumption
Size sq. ft. 23,000
Building Energy Consumption kWh/day 1,474.52
Canadian Solar CS6P 240
PV to use W 240
number of panels # 363
PV array size kW kW 87.23
PV array size kWh/day kWh/day 462.30
% Solar Energy 31.4%
System Cost
Type Efficient Option 2 No Solar Power
Size (kW) 87.23 -
Cost of each panel $280.59 -
Cost of System $101,977.54 -
Cost of Installation $348,902.11 -
Cost of Inverters, etc. $40,000.00
CPS Rebate $100,000.00 -
Total System Cost $390,880 -
*max CPS $100,000
* Installation Contractor: 411 Energy LLC. Cost obtained from company.
Financial Performance
Total Electric Cost monthly $2,140 $3,117
Monthly Savings $977
Return Period 21.1 years
Cost / kW $4,481.25

4. total
1 68
2 114
3 82
4 94