PECO's net-metered solar customers rose 21% to 23,510 in the year to May 2025

Sun, 11 Oct 2026 08:37:47 -0400

PECO had 23,510 net-metered solar customers on May 31, 2025, up from 19,454 a year earlier, a gain of 4,056 or 21%. That is the largest of PECO’s four yearly gains from 2022 to 2025, according to the Pennsylvania Public Utility Commission’s Net Metering and Interconnection Report for 2023 to 2025, dated December 2025. Net metering is the arrangement in which the utility credits you for the electricity your panels send back to the grid. Across Pennsylvania the count rose 20%, to 87,579 solar customers.

The PUC compiles the report from the annual filings each electric utility makes for a year that runs from June 1 to May 31. It calls every net-metered home or business a customer-generator, and it reports solar separately from other sources such as wind and biogas. PECO’s service territory map includes Montgomery County along with Philadelphia and Bucks, Chester and Delaware counties, so these counts take in Conshohocken and the townships around it as part of a much larger area.

PECO's solar customer count nearly doubled from 2021 to 2025

Net-metered solar customers in PECO's service territory on May 31 of each year

Solar PV row of the PUC's tables. 2021 and 2022 from the 2021 to 2023 report. Source: puc.pa.gov

Net-metered solar customers on May 31, PECO and all of Pennsylvania, 2021 to 2025
year	PECO solar customers	Pennsylvania solar customers
2021	12345	38122
2022	13713	45661
2023	16998	59335
2024	19454	73181
2025	23510	87579

Source: puc.pa.gov

Year by year

PECO’s count grew 11% in the year to May 2022, 24% in 2023, 14% in 2024 and 21% in 2025. In 2025 PECO grew faster than the state as a whole for the first time in those four years. PECO held 26.8% of the state’s net-metered solar customers in 2025, down from 30.0% in 2022. PPL has the most, at 28,654.

Solar customers added each year to May 31, PECO and Pennsylvania. Growth and share computed from the PUC's counts.
year	PECO solar customers added	PECO growth (%)	Pennsylvania solar customers added	Pennsylvania growth (%)	PECO share of Pennsylvania (%)
2022	1368	11.1	7539	19.8	30.0
2023	3285	24.0	13674	29.9	28.6
2024	2456	14.4	13846	23.3	26.6
2025	4056	20.8	14398	19.7	26.8

Source: puc.pa.gov

The PUC’s 2025 annual report on the Alternative Energy Portfolio Standards, the state law that requires utilities and electricity suppliers to provide 18% of their power from alternative sources, carries the statewide count back to 2016, when Pennsylvania had 10,632 customer-generators, against 87,980 in 2025. That count includes every source, and the net metering report says solar makes up 99.5% of interconnection requests.

Customer-generators of all kinds and annual interconnection requests in Pennsylvania, 2016 to 2025
year	Pennsylvania customer-generators	Pennsylvania interconnection requests
2016	10632	3092
2017	16137	8042
2018	21429	5627
2019	26005	5819
2020	31555	8167
2021	38428	9167
2022	45968	12489
2023	59644	19202
2024	73525	18582
2025	87980	20202

Source: puc.pa.gov

Utilities compared

Every large utility in the state added solar customers at double-digit rates in the year to May 2025. PECO added more than any other.

Net-metered solar customers and capacity by utility, May 31, 2024 and 2025. Pike County Light and Power reported no solar customers in either year and is left out.
Utility	Solar customers May 2024	Solar customers May 2025	Added	Growth (%)	Solar capacity May 2025 (kW)
PPL	25100	28654	3554	14.2	439371
PECO	19454	23510	4056	20.8	222134
Met-Ed	12550	15299	2749	21.9	195908
Duquesne Light	8164	10298	2134	26.1	96064
West Penn Power	3642	4546	904	24.8	65455
Penelec	2897	3513	616	21.3	48824
Penn Power	1024	1302	278	27.1	35977
UGI	249	342	93	37.3	3586
Citizens	77	78	1	1.3	3808
Wellsboro	24	37	13	54.2	1522
Pennsylvania total	73181	87579	14398	19.7	1112649

Source: puc.pa.gov

Size of the systems

Capacity is the most power a system can produce at once, measured in kilowatts (kW). PECO’s net-metered solar capacity rose 18% in the year to May 2025, to 222,134 kW. Divided by the number of customers, that is about 9.5 kW each, down from about 10 kW in 2023. The average includes businesses as well as homes, so it says little about the size of a typical house system.

PECO net-metered solar customers and capacity, May 31, 2023 to 2025. Average computed from the PUC's figures.
year	PECO solar customers	PECO solar capacity (kW)	Average capacity per customer (kW)
2023	16998	169476	9.97
2024	19454	187607	9.64
2025	23510	222134	9.45

Source: puc.pa.gov

Applications and review times

Before panels are switched on, the installer files an interconnection request, the application asking the utility to connect the system to its lines. PECO received 3,776 requests in the year to May 2025, down from 4,071 the year before and 4,527 in 2023. Statewide requests rose 9% to 20,202 over the same year.

Most of PECO’s requests were Level 1, the PUC’s category for certified inverter-based systems of 10 kW or less. The report says utilities must finish a Level 1 review within 25 business days. PECO’s average was 10 days in 2025, down from 18 in 2024, and the report names PECO and PPL as the fastest of the large utilities at Level 1.

Interconnection requests received by PECO by review level, and the Pennsylvania total, years to May 31
year	Level 1	Level 2	Level 3	Level 4	PECO total	Pennsylvania total
2023	3545	982	0	0	4527	19202
2024	3302	762	6	1	4071	18582
2025	2882	873	20	1	3776	20202

Source: puc.pa.gov

Mean number of days PECO took to approve a Level 1 interconnection request, years to May 31
year	PECO mean days to approve a Level 1 request
2021	18
2022	17
2023	16
2024	18
2025	10

Source: puc.pa.gov

Of PECO’s 3,776 requests in 2025, the PUC lists 3,130 as approved, 300 as cancelled by the customer, 238 waiting on the customer, 59 waiting on PECO and none as denied.

Status of PECO interconnection requests, year to May 31, 2025
Status	PECO requests
Submitted	3776
Approved	3130
Cancelled by customer	300
Pending customer action	238
Pending PECO action	59
Denied	0

Source: puc.pa.gov

What this means for the roof under the panels

InterNACHI, the home inspectors’ association, estimates that solar panels last 20 to 30 years, 3-tab asphalt shingles 20 years and architectural shingles 30 years. By those estimates a 3-tab roof that is 12 years old has about 8 years left, so panels installed on it now would likely have to come off and go back on when the roof is replaced. The guide to how long roofing materials last has the estimates for slate, metal and flat roofs.

Before you sign a solar contract, ask the installer to write down the roof’s age and condition, whether they recommend replacing the roof first, and what they would charge to remove and reinstall the panels for a future roof job. Ask your roofer whether the roof warranty covers penetrations for the panel mounts. The guide to rooftop solar with PECO explains net metering credits, PECO’s application levels and its fees, and the roofing permits guide covers the borough permit for the roof itself.

If an application seems stuck, the status categories above are the ones PECO reports to the PUC. Ask the installer whether the request is complete or waiting on information from you.

Caveats

These counts end on May 31, 2025. On October 11, 2026 the PUC’s reports page listed the 2023 to 2025 report as its latest. These figures predate the end of the federal Residential Clean Energy Credit, which the IRS says is not available for property placed in service after December 31, 2025. The PUC’s 2025 annual report says growth is likely to slow in the coming years because of changes in federal incentives.

PECO’s territory is far larger than the two boroughs, and the report breaks its figures down by utility, not by town, so they do not show how many homes in Conshohocken have panels. The solar counts include businesses and a small number of large systems along with homes. A request counted in one year may be connected in the next, so requests and new customers in the same year do not match. A few cells in the PUC’s tables do not add up. PECO’s 2024 total capacity, for example, matches its solar figure rather than the sum of its rows. This article uses the solar rows throughout.

PECO | Conshy Roofers

PECO's net-metered solar customers rose 21% to 23,510 in the year to May 2025

Year by year

Utilities compared

Size of the systems

Applications and review times

What this means for the roof under the panels

Caveats