Virginia Solar Case Study — The Johnson Family
Solar Case Study · Virginia

What going solar actually looked like for one Virginia family

A real Sandston, VA household walks through the decisions, the quotes, the mistakes they dodged, and the numbers — twelve months in.

$1,956
Saved in year one
11.1 yrs
Payback period
$48,900+
25-year savings est.
$17/mo
Peak summer bill
Meet the Homeowner

The Johnson Family

Sandston, Virginia — Henrico County, Dominion Energy territory.

Home
2,400 sq ft · built 2005 · south-facing roof
Prior Monthly Bill
$185/month
Reason for Exploring Solar
Rising electric costs, energy independence, a new EV
Utility
Dominion Energy
“Think of it as locking in your energy costs for the next 10 years.”
The Landscape

Solar in Virginia, by the numbers

Before making any decisions, the Johnsons needed to understand what solar actually looks like in the Commonwealth.

FactorVirginia Reality
Utility ProviderDominion Energy — one of the largest in the US
Net MeteringAvailable under the RPS law
Average Sun Hours4.5 peak sun hours per day
State IncentiveNo direct state tax credit currently
Federal Tax Credit30% Investment Tax Credit (ITC) still available
Average System Cost$25,000 – $35,000 before incentives
Payback PeriodTypically 9 – 13 years
“Energy prices today are the cheapest they'll ever be.”
The Decision Process

What they did right

Four deliberate steps, taken in order, that shaped the entire outcome.

1

Got the roof checked first

A 12-year-old roof got inspected and two sections replaced before a single solar quote came in — avoiding the far more expensive fix of pulling panels later for roof work.

Cost: $3,200 upfront
2

Got three separate quotes

Rather than signing with the first company that knocked on the door, they let three installers pitch, then compared line by line. Quotes landed at $28,400, $31,000, and $34,500 for a comparable 10kW system — they took the established mid-tier bid.

Saved $9,000+ by shopping around
3

Refused in-house financing

The highest-quoting rep pushed hard on their own financing. The Johnsons used a home equity line of credit at 6.9% instead.

Saved an est. $4,100 in interest
4

Understood net metering, in writing

A direct call to Dominion Energy confirmed excess generation is credited at the retail rate in their territory — the detail that made the whole economics work.

The Numbers

Before and after

Before Solar
$185/mo
$2,220 per year in electric costs
After Solar
$22/mo
$264 per year — connection fee only
System Cost (after 30% ITC)$21,700 net
Estimated Payback Period11.1 years
25-Year Savings Estimate$48,900+
The 30% federal Investment Tax Credit reduced their out-of-pocket cost significantly — on a $31,000 system, that meant $9,300 back at tax time.
Twelve Months Later

Real production, month by month

Solar generated vs. grid electricity used across four sample months. Every month closed at the same $22 connection fee.

January
680 kWh · $22
April
1,240 kWh · $22
July
1,380 kWh · $22
October
1,100 kWh · $22
kWh generated  ·  Annual total: 11,800 kWh generated / 580 kWh drawn from grid
“My electric bill, with AC this summer, is $17/mo — and that is just connection charges and taxes which cannot be reduced.”
What They Held Off On

Battery storage — not yet

The Johnsons considered a battery backup but chose a generator instead, keeping the door open as the technology matures. Their EV now charges during peak solar hours to maximize self-consumption.

“Solar is great but batteries kinda suck.”  —  community feedback that shaped the call
Mistakes Avoided

What they made sure not to do

×

Did not sign a solar leasean outstanding obligation on the home was a non-negotiable dealbreaker

×

Did not skip the roof inspectionpulling panels later for roof work costs thousands more

×

Did not take the first quoteshopping around saved over $9,000

×

Did not undersize the systemmost solar regret comes from going too small

×

Did not ignore resale implicationsconfirmed system ownership transfers cleanly to a future buyer

Key Takeaways

For Virginia homeowners weighing the same decision

Virginia's net metering policy currently makes the economics work — but policy can change.
Dominion Energy territory is generally favorable for solar versus many other VA utilities.
The 30% federal tax credit is the single biggest financial lever available. Use it.
Roof condition is not optional. Check it before you sign anything.
Finance smartly — home equity beats solar company financing every time.
Get three quotes minimum. The spread is often $5,000–$10,000.
Don't lease. Own the system outright or via a bank loan.
Size up. You'll regret going too small more than going slightly larger.
The Final Word
“Once it's paid off, it's free energy for life. That's where I am.”

The Johnsons are eleven months into a system on track to pay for itself in just over a decade — then run free for another fifteen years after that. Good south-facing roof, Dominion Energy rates, a plan to stay long term: for a household like theirs, the math works. The key is going in informed, financing it right, and choosing the installer carefully.

Virginia Solar Case Study · The Johnson Family, Sandston, VA