Pennsylvania Clean Energy Legislation Tracker

This tracker covers the Pennsylvania bills currently shaping the clean energy market and the Tier I / Tier II Alternative Energy Credit (AEC) framework. It includes the PRESS Act (SB 501 / HB 501) and the principal companion and alternative bills moving in parallel, with notes on why each matters for buyers, sellers, and project developers in the PA AEC market.

Bills currently tracked

SB 501 / HB 501 — PRESS Act

PRESS is the headline bill for the Pennsylvania AEC market. It would replace the 2004 Alternative Energy Portfolio Standards Act with a modernized standard targeting 50% in-state low-carbon electricity by 2035 and reorganizing AECs into three tiers (Tier I ~35%, Tier II ~10%, Tier III ~5%). Tier I expands to admit small modular reactors and fusion alongside the existing renewable resources. Tier II is redefined around cleaner thermal and flexibility resources — fuel cells, biomass, co-located storage, high-percentage hydrogen, CHP, hydro, distributed generation, and DSM. A brand-new Tier III holds the legacy thermal resources that used to live in Tier II: waste coal, MSW, IGCC, wood pulping byproducts, and lower-percentage hydrogen.

For deeper analysis, see PRESS vs. AEPS, Will PRESS Reduce Demand for Tier II AECs?, and Tier II vs. Tier III.

SB 372 — Clean Energy Standard

SB 372 is an alternative modernization path for the PA AEPS, proposed independently of the Lightning Plan. It targets a higher overall clean energy share but uses a different tier structure than PRESS and a different geographic-sourcing framework. SB 372 was referred to the Senate Consumer Protection & Professional Licensure Committee in March 2025. The most likely legislative outcomes are either (a) SB 372 advances on its own track and competes with PRESS, (b) elements of SB 372 are folded into a PRESS amendment, or (c) SB 372 is held back while PRESS moves. Worth tracking as the principal alternative framing of the same policy question.

SB 699 — Linear generators in AEPS

SB 699 is a narrower amendment to the existing AEPS that would add linear generators as a qualifying alternative energy resource. Linear generators are a relatively new technology category — flameless, fuel-flexible electrical generators that have been deployed at data centers and behind-the-meter industrial sites. The bill is not framework-changing; it expands the resource list within the current AEPS structure. If enacted before PRESS, it adds a new generator class to the existing Tier II eligibility pool. If enacted in parallel with PRESS, the question becomes which tier of the new three-tier framework linear generators land in.

SB 1019 — Smart Solar Siting Act

SB 1019 addresses the supply-side bottleneck for utility-scale solar by establishing statewide standards for siting utility-scale solar projects, replacing the current patchwork of municipal-level review. The bill is not directly about AECs, but it is highly relevant: any policy that materially accelerates in-state utility-scale solar deployment changes the Tier I AEC supply curve and, by extension, the relative pricing of Tier I versus Tier II certificates. SB 1019 is one of the principal supply-side companions to whichever portfolio standard ultimately passes.

HB 2348 — Net metering update

HB 2348 updates Pennsylvania's net metering rules for distributed generation. The bill affects how behind-the-meter solar, CHP, fuel cell, and other distributed resources are compensated for exported generation. It does not directly change AEC eligibility, but the economics of distributed generation projects depend jointly on net metering treatment and AEC monetization. Customers and developers underwriting new distributed projects should be tracking HB 2348 alongside PRESS.

How to prioritize for AEC market participants

Not every bill in the tracker carries equal weight for AEC strategy. A reasonable priority order:

• First priority: SB 501 / HB 501 (PRESS). Rewrites the certificate framework itself. Every contract and forecast depends on the outcome.
• Second priority: SB 372 (Clean Energy Standard). The principal alternative to PRESS. Could compete with or fold into PRESS.
• Third priority: SB 1019 (Solar Siting). Major supply-side driver for Tier I AECs; secondary effect on Tier II via relative pricing.
• Fourth priority: SB 699 (linear generators) and HB 2348 (net metering). Narrower, resource-specific impacts. Important for affected developers; less important for portfolio-level AEC strategy.

Why these bills matter for PA AEC market participants

Pennsylvania's AEC market touches a wide cross-section of stakeholders: building owners and developers who generate certificates from CHP, fuel cell, solar, storage, and DSM projects; electric generation suppliers (EGSs) and electric distribution companies (EDCs) who buy certificates to satisfy compliance obligations; corporate buyers who source AECs voluntarily; and brokers and aggregators who intermediate between them. Each of the bills tracked above touches one or more of these constituencies in a different way — PRESS rewrites the certificate framework, SB 372 offers an alternative framework, SB 1019 and HB 2348 shape supply, and SB 699 expands resource eligibility. The aggregate effect of which bills move (and which do not) will define the contours of the PA AEC market for the next decade.

Practically, that means anyone with material exposure to PA Tier II AECs — whether through a long-dated offtake contract, a project under construction, or a portfolio of issued certificates at GATS — should be monitoring not just PRESS but the full slate of companion bills, because the resolution of one often depends on the others.

A note on status

Statuses above are as of recent legislative session activity and should be reverified against the Pennsylvania General Assembly's bill index before relying on them for compliance planning or contracting decisions. Committee assignments, vote schedules, and amendment activity can change quickly, particularly during budget season and around Lightning Plan negotiations.

What to watch next

• Committee hearings on SB 501 / HB 501 — first substantive movement out of committee would be the meaningful PRESS signal.
• Whether SB 372 advances on its own track or merges with the PRESS framework via amendment.
• Amendment activity around tier definitions, ACP levels, and grandfathering for existing certificates issued under Act 213.
• Movement on the parallel Lightning Plan bills (PACER cap-and-invest, Community Energy, permitting reform), which were designed to move as a package.
• Any new bills introduced mid-session that affect AEC eligibility, geographic sourcing, or compliance ACPs.