Commercial Grid-Tie

Commercial grid-tie systems.

9.9 kW grid-tie installation on local business

Here is a chart of some "average" installed costs, rebates and tax credits of various sized commercial grid-tie systems installed under the Aquila program.

System Size	10 kW	20 kW	50 kW	100 kW
Average Cost¹	$76,500	$152,000	$375,000	$735,000
Utility Rebate²	$35,000	$70,000	$175,000	$350,000
After Rebate	$41,500	$82,000	$200,000	$385,000
Fed Tax Credit³	$12,450	$24,600	$60,000	$115,500
Final Cost	$29,050	$57,400	$140,000	$269,500

1. Average system cost is based on roof-top flush-mount installation

2. Utility rebate assumes grid-tie installation within Black Hills (Aquila) or Xcel service territory. Current rebates paid are $2/watt equipment rebate and $115.00/mWhr REC annual production payment. Array installation must be within 10% of calculated system output to qualify for full rebate amount.

3. Current commercial Federal Income Tax Credit is 30% of "after rebate" cost, with no cap.