A $100/month electricity bill in Virginia represents roughly 719 kWh per month at the state average rate of 13.9¢/kWh (EIA). With 4.7 peak sun hours per day, most Virginia homeowners need a 6.1 kW solar system — about 16 panels at 400W — to offset that usage. After the 30% federal ITC, net installed cost runs about $12,900, with 12.3-year simple payback and $30,900+ in estimated 25-year savings.
How Many Solar Panels for a $100 Electric Bill in Virginia?
Virginia electricity rates and sun hours change the math versus the US average. The sizing formula:
System size (kW) = Annual kWh ÷ (Peak sun hours × 365 × 0.82)
For a $100/month bill in Virginia:
Annual usage: ~8,633 kWh/year
Peak sun hours: 4.7 h/day (Virginia)
System size:6.1 kW DC (~16 × 400W panels)
Metric
Virginia
US average
Rate
13.9¢/kWh
16.3¢/kWh
Sun hours
4.7 h/day
4.5 h/day
System size
6.1 kW
5.5 kW
Panels (400W)
16
14
Virginia requires a larger system than the national average for the same dollar bill because higher consumption at lower rates. Use our solar system size calculator with your ZIP code for a roof-specific result.
Find your exact solar savings
Enter your ZIP code for a personalized estimate using your state's electricity rate and sun hours.
💰 System Cost
What Does Solar Cost for a $100/Month Bill in Virginia After the ITC?
At $3.00/W installed (SEIA 2026 US average), a 6.1 kW system in Virginia costs about $18,400 before incentives.
The 30% Residential Clean Energy Credit (ITC) under IRC Section 25D saves roughly $5,520, bringing net cost to $12,900. The credit applies to purchased systems placed in service through 2032; consult a CPA for your tax situation.
Cost line
Amount
Gross installed (6.1 kW)
$18,400
Federal ITC (30%)
−$5,520
Net cost after ITC
$12,900
📈 Payback Period
How Long Is Solar Payback on a $100 Bill in Virginia?
Simple payback divides net system cost by first-year bill savings. In Virginia, a 6.1 kW system saving ~$1,044/year against a $100/month bill pays back in about 12.3 years after the ITC.
At 3% annual rate escalation (EIA historical average), 25-year utility spend totals ~$43,800 vs $12,900 net solar cost — an estimated $30,900+ lifetime advantage. Model your timeline in our solar payback calculator.
Solar vs utility company · 25-year comparison
Total cost of staying on the grid vs owning solar for a $300/month bill (national average assumptions).
Virginia Solar Incentives for a $100/Month Electric Bill
Virginia’s Solar Energy Development and Energy Storage Authority (SEDA) provides low-interest loans for solar installations. Dominion Energy Virginia and APCo offer net metering programs. Virginia’s Clean Economy Act set a 100% renewable electricity target by 2045, driving strong utility solar development. Income-qualified residents may access the Low Income Utility Access Program.
Check DSIRE and our Virginia solar page for current rebates, net metering rules, and utility-specific programs before signing an install contract.
⚡ System Size
Virginia vs US Average: $100/Month Bill Comparison
At Virginia's average rate of 13.9¢/kWh and 4.7 peak sun hours, a $100/month bill (~8,633 kWh/year) typically requires a 6.1 kW system — about 16 panels at 400W each. Use our solar system size calculator with your ZIP for a roof-specific estimate.
A 6.1 kW system in Virginia costs roughly $18,400 installed before incentives. The 30% federal ITC reduces net cost to about $12,900. Virginia's Solar Energy Development and Energy Storage Authority (SEDA) provides low-interest loans for solar installations. Dominion Energy Virginia and APCo offer net metering programs. Virginia's Clean Economy Act ...
At $12,900 net cost and ~$1,044/year in bill savings, simple payback in Virginia is about 12.3 years. High-rate states pay back faster; low-rate states may take longer even with strong sun.
Most Virginia homeowners with a $100/month bill see positive 25-year returns — estimated $30,900+ vs staying on utility power with 3% annual rate escalation. See the [Virginia solar data page](/states/va/) for local NEM and incentive details.
The US average needs a 5.5 kW system at 11.0-year payback. Virginia needs 6.1 kW with 12.3-year payback — driven by Virginia's 13.9¢/kWh rate and 4.7 daily sun hours.