Pennsylvania energy incentives for buildings in 2026

A lot moved in Pennsylvania this year. The utility efficiency programs started a new five-year phase in June, the state building code changed in January, and two federal incentives closed to new projects over the summer. Below is the status of each program as of October 2026, and the building data each one runs on.

1. Utility rebates under Act 129, Phase V

Act 129 requires every electric utility with more than 100,000 customers to run a PUC-approved efficiency and peak-demand program. Phase V runs June 1, 2026 to May 31, 2031 (PUC final order, June 2025). It puts more weight on cutting peak demand, and for the first time that includes January and February alongside summer.

PPL Electric currently posts these business rates (PPL Business Savings):

Funds are first come, first served, and PPL recommends pre-approval. PPL marks the rates as subject to change, so confirm before you budget.

PECO, Duquesne Light, and the FirstEnergy utilities (Met-Ed, Penelec, Penn Power, West Penn) run their own Phase V business programs. Check each utility's current rate sheet directly. PECO's commercial program is branded Smart Ideas.

2. State grants and loans: ACE and HPB

The Commonwealth Financing Authority runs two programs that often get confused:

• Alternative and Clean Energy (ACE): for businesses, economic development organizations, and municipalities. Grants up to $2 million or 30% of project cost, and loans up to $5 million or 50%, with a 1:1 match (DCED).
• High Performance Building (HPB): for small businesses and individuals. Grants up to $500,000 or 10% of eligible construction or renovation cost, and small-business loans up to $2 million, with a 1:1 match (DCED).

Neither page lists an open round right now, so check with DCED before you build a project around one.

3. C-PACE financing

C-PACE lets you pay for efficiency, renewables, water, indoor air quality, and resiliency upgrades through an assessment on the property. A 2022 law (Act 43) added multifamily buildings with 5 or more units. The Philadelphia Energy Authority runs it in Philadelphia, and the Sustainable Energy Fund runs it in the other participating counties, including Allegheny (Allegheny County, PEA). The county list has grown, so confirm your county with the administrator.

4. Solar: net metering and SRECs

Non-residential systems can net meter up to 3 MW, or up to 5 MW if the system supports the grid in emergencies or serves a microgrid. Systems of 500 kW and up need PUC approval (52 Pa. Code § 75.13).

Pennsylvania's solar renewable energy credit market still runs under a 0.5% solar requirement, and prices have been low: brokers reported an average of about $24 per MWh in 2025 (Flett Exchange). Bills to raise the requirement haven't passed.

5. The state energy code changed January 1

Pennsylvania's Uniform Construction Code moved to the 2021 I-Codes on January 1, 2026. New commercial work now follows the 2021 IECC or ASHRAE 90.1-2019, with state amendments (DOE Building Energy Codes Program). If your project still had a pre-2026 contract, the window to permit under the 2018 code closed June 30, 2026.

6. Benchmarking in Philadelphia and Pittsburgh

• Philadelphia: commercial and multifamily buildings of 50,000 sf and up benchmark in ENERGY STAR Portfolio Manager by June 30 each year (City of Philadelphia). Non-residential buildings of 50,000 sf and up also need a building tune-up every 5 years under the Building Energy Performance Program. The second-cycle deadline for buildings over 200,000 sf was September 30, 2026, and buildings of 100,000 to 200,000 sf are due September 30, 2027.
• Pittsburgh: non-residential buildings of 50,000 sf and up benchmark by June 1 each year (City of Pittsburgh).

The federal picture changed

The July 2025 federal budget law (P.L. 119-21) closed two incentives to new projects:

• Solar investment tax credit (48E): solar that began construction after July 4, 2026 gets no credit unless it's placed in service by December 31, 2027 (IRS Notice 2025-42).
• 179D deduction: ends for buildings whose construction begins after June 30, 2026 (IRS).

That makes the utility and state programs above carry more of the weight.

What every one of these asks for

The applications all come back to the same few numbers:

• Act 129 rebates pay per kWh saved, so you need a clean baseline from the building's meter data and the equipment being replaced.
• HPB grants are a percentage of eligible construction cost, scoped against the building's actual systems.
• Benchmarking in Philadelphia and Pittsburgh runs on gross floor area and every meter, entered correctly in Portfolio Manager.
• Solar sizing for net metering starts with 12 months of usage.

If the floor area is off or a meter's missing, the rebate math and the benchmark both go wrong at the same time.

How we help

ThresholdStack keeps one record per building in BuiltLedger: floor area measured from the source, every piece of equipment with its age, and the meter data behind it. When a utility program, a PACE administrator, or a city benchmarking deadline asks for numbers, they come from that record.

See how we measure floor area and verify benchmarks

Updated October 2026. Program terms change; confirm with your utility, DCED, or your city before you commit.