Cost & Savings Breakdown
Based on $150/month electric bill in Rockville
System Size
7.2 kW
Annual Production
9,669 kWh
Gross System Cost
$22,315
Federal Tax Credit (30%)
-$6,695
State Incentive
-$1,000
Net Cost
$14,621
Monthly Savings
$122
CO₂ Offset/yr
8,895 lbs
25-Year Savings Projection
Utility & Net Metering
Local UtilityPEPCO
Net Metering PolicyFull Retail
Compensation RateFull retail rate
Capacity LimitNo overall limit
Electricity Rate$0.151/kWh
Peak Sun Hours4.6 hrs/day
Available Incentives
30%
Federal ITC — Deduct 30% of your system cost from federal taxes. Available through 2032.
$1,000
Maryland State Incentive — Maryland offers a $1,000 state grant for residential solar.
Common Questions
How much does solar cost in Rockville?
Solar in Rockville, Maryland costs approximately $22,315 for a 7.2 kW system. After the 30% federal tax credit, your net cost is about $14,621.
What is the solar payback period in Rockville?
The estimated payback period for solar in Rockville is 10 years, based on a $150/month electric bill and local sun hours of 4.6 hrs/day.
Does PEPCO offer net metering?
PEPCO offers Full Retail net metering. Full retail rate.