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Solar in Philadelphia County, PA

Solar panels in Philadelphia, PA

4.2 peak sun hours per day. See what the data says about Philadelphia, then check your specific roof free.

Utility territory: PECO

Local context

What limits Philadelphia roofs

Philadelphia averages 4.2 peak sun hours per day in the regional data. Roof orientation, usable area, and shade can reduce production further for an individual property.

Solar data for Philadelphia

Peak sun hours / day
4.2 hrs

Modeled annual average.

Typical system size
6–10 kW

Residential, based on typical household load.

Estimated first-year savings
$1,700–$2,850

Per year for a typical 6–10 kW system. The high end assumes the larger array.

Roofs suitable for solar
55–68%

Modeled from regional adoption data.

Primary utility
PECO

Contact your utility for current net billing enrollment status.

Net metering / billing
Net Billing (RCP)

Pennsylvania requires 1:1 net metering at its investor-owned utilities, so exported energy offsets consumption kilowatt-hour for kilowatt-hour with monthly rollover; surplus remaining at the annual true-up is paid at the utility's price-to-compare rate. This estimate assumes a system sized to your annual usage.

Estimates use the average Pennsylvania current utility rate (before solar) of $0.22/kWh (EIA, retrieved Aug 2026) and modeled solar production; individual results vary with your rate, usage, roof orientation, and shading.

Personalized estimate

Estimate your first-year solar savings

Start with your bill or adjust the rate and typical system size for Philadelphia.

kW

Typical homes: 6–10 kW.

$/ kWh

Prefilled with the state residential average.

Estimated first-year savings

$2,300/ yr

$1,700–$2,850/yr for a typical 6–10 kW system — the low end is a smaller array, the high end a larger one.

Estimate — individual results vary with your rate, usage, roof orientation, and shading. Assumes an 85% system derate and 100% self-consumption; exported energy uses the local net-billing estimate.

City averages are a starting point — check your address for your verified result.

Frequently asked questions

How much sun does Philadelphia get for solar?

Philadelphia receives approximately 4.2 peak sun hours per day on average, based on modeled regional data.

What is the estimated first-year savings from solar in Philadelphia?

For a typical 6–10 kW system in Philadelphia, first-year savings are estimated at $1,700–$2,850 per year: the low end uses the smaller system, while the high end is up to the larger system. Estimates use the average Pennsylvania current utility rate (before solar) of $0.22/kWh (EIA, retrieved Aug 2026) and modeled solar production; individual results vary with your rate, usage, roof orientation, and shading. These are educational estimates, not guarantees.

What can limit solar production in Philadelphia?

Philadelphia averages 4.2 peak sun hours per day in the regional data. Roof orientation, usable area, and shade can reduce production further for an individual property.

Data source: City figures are modeled estimates for general guidance — not a quote for any specific property.

Ready to check your roof in Philadelphia?

The city data above is a regional estimate. Enter your address to get a personalized result based on your actual roof.

Solar data for nearby Pennsylvania cities

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