Is solar worth it in Pennsylvania?

Pennsylvania gets limited sunshine — about 3.9 peak sun hours a day — and residential electricity runs around $0.18/kWh. For a typical $150-a-month power bill, that points to roughly a 8.8-kW system costing about $26,344 — with no federal tax credit, which ended for installations completed after December 31, 2025 — paying for itself in about 14.6 years and netting on the order of $35,021 over 25 years. Your own numbers will differ — the calculator above uses your real bill.

Pennsylvania has limited sun but an active SREC market and above-average rates, so a right-sized system pays back reasonably. Check current SREC prices, which swing the math noticeably.

What changes the math in Pennsylvania

• Your electricity rate — the more you pay per kWh, the more each solar kWh saves you. Pennsylvania sits at about $0.18.
• Sun hours — more sun means a smaller, cheaper system covers the same usage. Pennsylvania averages ~3.9 hours.
• Net metering / buyback — how your utility credits power you export swings the payback; check your specific utility's current terms.
• Install cost — quotes vary by installer and roof; the calculator defaults to a typical $/watt you can override.

Pennsylvania: the rules that actually decide your payback

Who your utility is, and why it matters

Pennsylvania's investor-owned utilities — PPL, PECO, Met-Ed, Duquesne Light, and a few smaller ones — are all bound by the same PUC net-metering mandate, which makes this one of the few states where the answer does not depend much on who serves you.

What your exported power is worth

Pennsylvania remains a genuine 1:1 full-retail net-metering state in 2026: every exported kilowatt-hour credits at exactly the retail rate under the framework built by Act 213 and Act 35. Residential systems up to 50 kW qualify, credits roll forward, and annual excess is trued-up around 31 May at retail value. Watch the PPL settlement and FirstEnergy filings for value-stack proposals, but 1:1 stands today.

The Pennsylvania incentive layer

There is no state income-tax credit for panels. The full-retail net-metering rule is the incentive — worth more per year than most states' credits, structural rather than budget-dependent, and it applies identically regardless of when your system was installed. Property-tax treatment is worth one question with your assessor: Pennsylvania exempts the added value of a residential solar system from property assessment in most jurisdictions, which keeps your tax bill from creeping up as your home's market value rises with the array on it.

Battery and self-consumption

With exports earning full retail, a battery is not needed to defend economics the way it is in avoided-cost states — but self-consumption still avoids delivery-charge components on some tariffs, so the battery decision here is a comfort-and-outage decision more than an arbitrage one.

What to check on a Pennsylvania quote

• Confirm the quote's model credits exports at full retail — in Pennsylvania anything less is a modelling error, not a tariff reality.
• Ask how the annual true-up (around 31 May) is handled in the savings projection, and what happens to credits at the true-up date.
• If you are on a PPL or FirstEnergy tariff, ask specifically whether any value-stack pilot or settlement change affects your interconnection class.
• Sizing to 100-120% of annual usage is legitimate here in a way it is not in export-penalising states; ask what cap your utility enforces.

Programme and tariff detail above is summarised from Pennsylvania PUC — net metering and the AEPS solar credit market. Last reviewed 20 August 2026 by SolarDime editorial. These rules change — confirm the current terms with your utility and the regulator before you sign.