Solar costs, incentives, and equipment, explained by state
Residential solar pricing varies more within the United States than most buyers expect.
A 7kW system in Phoenix and the same system in Newark can differ by several thousand
dollars once permitting fees, local labor rates, and state incentive stacking are factored
in. This site breaks those differences down state by state, alongside the equipment
decisions — inverter type, battery chemistry, string sizing — that determine whether a
system performs as quoted or underperforms for years without anyone noticing.
Coverage is organized around three questions most homeowners actually ask: what will this
cost where I live, what incentives apply, and which equipment choices matter versus which
are marketing noise.
How solar cost estimates are built
Each state page starts from current federal and state incentive rules, published utility
net-metering rates, and typical installed cost-per-watt ranges reported for that market.
Where a figure depends on a variable most sites gloss over — panel degradation curve,
inverter clipping loss, battery round-trip efficiency — that variable is named and its
effect on the total is quantified rather than folded into a single “average” number.
Pages are dated and revised when a state’s incentive structure changes.
Solar panel cost pages by state
More states are added as pages are completed. See the full Solar Costs by State archive.
Solar costs by state
Installed cost-per-watt, typical system sizes, and payback period estimates, broken out
by state rather than given as a national average that obscures how much labor and
permitting costs actually vary by region.
Tax credits & incentives
Federal solar tax credit mechanics, state rebate programs, and net-metering policy by
state — including which incentives stack, which phase out on a schedule, and which
require specific equipment certifications to qualify.
Equipment & how-to
Inverter types, battery sizing math, and the failure modes that show up after installation
rather than in a sales brochure — MPPT versus PWM charge controller behavior, lithium
versus lead-acid degradation under real cycling, and common wiring faults.
Comparisons
Grid-tied, hybrid, and off-grid configurations compared on upfront cost, ongoing
maintenance, and resilience during outages, along with equipment brand comparisons
where the differences are measurable rather than cosmetic.
Common questions about home solar cost
How much does home solar cost in 2026?
Installed cost typically falls in a per-watt range that varies by state due to labor
rates, permitting fees, and local incentive availability. See the state-specific pages
for current ranges rather than a single national figure.
Is solar worth it if I don’t plan to stay in my home long-term?
Payback period depends on system cost, local electricity rates, and how much of the
installed cost a home sale is likely to recoup — this varies enough by state and system
size that it’s addressed directly on each state’s page rather than answered generically.
Do I need a battery, or is grid-tied solar enough?
This depends on local net-metering rules and outage frequency. Some states’ net-metering
policies make battery storage financially unnecessary; others make it close to essential.
See Comparisons for the breakdown by configuration.
What actually shortens the life of a solar battery?
Depth of discharge, charge cycling frequency, and temperature exposure matter more than
brand name. Covered in Equipment & How-To.
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