Solar Panel Cost in Philadelphia, PA (2026)
Real installed prices, PECO credit rules, local rebates and how long a system takes to pay for itself in Philadelphia.
Estimate your Philadelphia system
Assumes a local rate of 17¢/kWh, 1520 kWh generated per installed kW per year, $2.9/W installed, the 30% federal credit and local rebates. Estimates only.
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Solar prices in Philadelphia by system size
| System | Gross cost | After 30% credit | After local rebates | Yearly output | Yearly savings | Payback |
|---|---|---|---|---|---|---|
| 5 kW | $14,500 | $10,150 | $10,150 | 7,600 kWh | $1,292 | 7.9 yrs |
| 7 kW | $20,300 | $14,210 | $14,210 | 10,640 kWh | $1,809 | 7.9 yrs |
| 10 kW | $29,000 | $20,300 | $20,300 | 15,200 kWh | $2,584 | 7.9 yrs |
| 12 kW | $34,800 | $24,360 | $24,360 | 18,240 kWh | $3,101 | 7.9 yrs |
Payback assumes exported power is credited near the retail rate. Confirm your utility's current policy — several states are mid-transition.
What makes Philadelphia different
1. PECO sets the interconnection rules
Philadelphia sits in PECO territory. Interconnection, the export credit rate and any capacity caps all come from that utility and are subject to change — confirm the current rules before signing a contract.
2. Export credit treatment matters more than panel brand
How exported power is credited has a bigger effect on payback than which panels you buy. Size to your own annual usage first, then pick equipment.
3. Net metering, but mid-transition
Exports are still credited close to retail in Philadelphia, but the policy is being phased down in many markets. Grandfathering rules and application dates matter — check the current schedule before signing.
4. Winter output, not summer, sets your annual number
Shorter winter days and snow cover pull Philadelphia's annual production down to about 1520 kWh per installed kW. Summer months over-produce; December and January under-produce. Size on the annual figure, never on a sunny week.
What affects your price in Philadelphia
- System size — the single biggest driver.
- Roof pitch and height — steep or two-storey roofs add labour.
- Roof age — replace worn shingles first; re-roofing around panels costs more later.
- Panel and inverter tier — premium modules and microinverters add 15–25%.
- Main panel upgrade — older homes may need a 200A service upgrade, $1,500–$3,000.
- Battery — optional, roughly $10,000–$15,000 installed.
- Season — late autumn and winter installs are often cheaper.
Solar cost in nearby cities
| City | Utility | Export credit |
|---|---|---|
| Newark, NJ | PSE&G | net metering |
| New York, NY | Con Edison | net metering |
| Boston, MA | Eversource | net metering |
| Buffalo, NY | National Grid | net metering |
Philadelphia solar FAQ
How much do solar panels cost in Philadelphia?
A 7 kW system — the most common size locally — costs about $20,300 installed before incentives, or $14,210 after the 30% federal tax credit and local rebates.
How long is the payback period in Philadelphia?
Roughly 7.9 years for a properly sized system, based on local rates, 1520 kWh of production per installed kW, and current incentives.
Does PECO offer a rebate?
Programs and funding change. Confirm the current PECO incentive directly with the utility, and never accept an installer's rebate promise that isn't in writing.
Do I need a permit to install solar in Philadelphia?
Yes. Philadelphia requires an electrical and structural permit plus an inspection, and PECO handles interconnection separately. A reputable installer files all of it — ask to see the permit number.
How much roof space does a system need?
A 7 kW array needs roughly 455–595 square feet of unshaded roof, depending on panel wattage and layout.
Is Philadelphia a good place for solar?
The sun resource is strong at about 1520 kWh per installed kW per year, and local rates run near 17¢/kWh. The real variables are roof condition, shading and PECO's export credit rules.
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Sources & method
Production modelled with NREL PVWatts. Utility rate from EIA retail-sales data. Incentive data from DSIRE and IRS guidance. Installed cost benchmarked to local market pricing. Last updated October 2026. Estimates only — not a quote.