Pennsylvania is genuinely one of the weaker incentive states, and it's worth being direct about that
No state credit exists, and the only local rebate is on a waiting list
Pennsylvania has no state income tax credit and no statewide cash rebate for residential solar, and that is consistent across every source reviewed. What the state does offer comes down to mandatory net metering and a modest market for solar credits, covered below. If a salesperson cites a Pennsylvania state credit, ask them to name the statute, since none currently applies to a typical residential purchase. At the local level, the City of Philadelphia's Solar Rebate program offers $0.20 per watt for residential projects, but the city's own page says the program is closed to new funding and places applicants on a waiting list, so confirm its current status before counting on it.
Sales and property tax exemptions most likely do not exist for residential systems, despite some marketing claims
Pennsylvania charges its 6% state sales tax on residential solar equipment and installation, and no residential exemption has turned up in the statute or in Department of Revenue guidance. The closest thing is a manufacturing exclusion, and the Department of Revenue's own ruling SUT-10-001 shows why homeowners can't use it: the sales tax code treats electricity for non-residential use as taxable property that can be manufactured, and the ruling applied the exclusion to a utility-scale facility selling power to a utility. A household generating for its own residential use doesn't fit that wording. A few marketing sources claim a sales tax exemption anyway, but none of the citations they give could be matched to an actual solar provision in the statute. On property tax, Pennsylvania has no statewide residential solar exemption either, and a bill to create one, HB 520, was still pending when the Pennsylvania Solar Center last updated its legislative guide. How your county treats a new system in its assessment can vary, so confirm with your county assessor and ask your installer for an itemized quote that shows whether sales tax is charged on your invoice.
Net metering credits at full retail all year, but unused surplus is settled at a lower rate
Under the Public Utility Commission's rule, 52 Pa. Code Section 75.13, residential systems up to 50 kW are credited for excess generation at the full retail rate, covering the generation, transmission, and distribution portions of your bill, and surplus carries forward from month to month. The strong part is monthly: you use your own production first, then bank the rest at full retail. The catch comes at the end of the year, when any surplus still unused is paid out at the utility's price to compare, which reflects generation supply but not delivery and is worth noticeably less than the full retail rate. If you buy electricity from a competitive supplier rather than your utility's default service, your supplier agreement governs the credit and unused distribution credits are zeroed out at year end instead of carrying forward. The rule covers the investor-owned electric distribution companies, including PECO, PPL Electric Utilities, Duquesne Light, and Met-Ed; electric cooperatives and municipal utilities fall outside it, so check yours. The practical takeaway is to size your system close to your own annual consumption rather than for large surplus.
SRECs add real but modest income, less than some neighboring states pay
Pennsylvania's Alternative Energy Portfolio Standard creates demand for solar credits, one per megawatt-hour of production, which you register and sell through PJM-GATS. Under the net metering rule you own those credits unless a contract assigns them to someone else, so read any lease or power purchase agreement carefully, and if you're a cash buyer ask your installer who handles the registration, since an unregistered system can't earn or sell credits. Prices are lower than many guides suggest: the Flett Exchange, a broker that publishes live Pennsylvania prices, lists 2026 credits around $20 to $24, although some guides cite ranges up to $40. At about $23 a credit, a typical 8 kW system producing roughly 9 to 10 megawatt-hours a year earns on the order of $200 to $250 annually, a useful but small addition. New Jersey's SREC-II program pays $77 per credit for registrations since July 27, 2026 ($85 before that), more than three times the Pennsylvania market, which is worth knowing if you live near the state line. Compare the two with the New Jersey incentive estimator, the SREC market price comparison tool, or the Maryland incentive estimator. If you finance the system, keep in mind that SREC income arrives slowly, and the combined loan and rebate timing tool can show how that cash flow compares with your monthly payment.