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Pennsylvania (US-PA)

Market Type: Deregulated (Retail Choice)
SSS Relevance: ⭐⭐⭐ High
Grid Carbon Intensity: ~290 gCO₂/kWh

SSS Factors: significant nuclear capacity, hydroelectric resources

1. Overview​

Pennsylvania operates a deregulated electricity market where residents and businesses can choose their electric generation supplier, while local utilities maintain responsibility for power delivery. The market is managed by the PJM Interconnection, a regional transmission organization (RTO) overseeing the grid across 13 states, and is regulated by the Pennsylvania Public Utility Commission (PUC) 1. As of March 2026, the state is experiencing a significant transition characterized by a shift toward natural gas and renewable energy, alongside a major surge in capacity costs 2.

Generation and Carbon Profile Pennsylvania is a leading electricity exporter in the U.S., with a generation mix dominated by natural gas (59%) and nuclear power (33.6%) as of 2024. Coal generation has significantly declined to roughly 5% following the retirement of major plants like the Homer City Generating Station 2. The state's grid carbon intensity is approximately 0.29 kg CO2 per kWh, a rate lower than the broader PJM regional average, driven by its high reliance on nuclear and natural gas 3. However, renewable energy adoption remains low; as of March 2026, only 3.4% to 4% of the state's electricity is generated from renewable sources, placing Pennsylvania 45th nationally in renewable energy production 4.

Pricing and Market Trends The market is facing substantial price pressures. Following a July 2024 PJM auction, capacity prices increased by over 800%, leading to projected bill increases of 10–20% for residents and up to 29% for businesses starting in June 2025 and continuing into 2026. Average residential rates are approximately 18.00–20.17 cents per kWh, with monthly bills averaging between $145 and $165 5. These increases are driven by rising demand from AI data centers and electric vehicles, necessary infrastructure upgrades, and the retirement of older power plants 5.

Policy Landscape The state currently operates under the Alternative Energy Portfolio Standard (AEPS), enacted in 2004, which requires 18% of electricity sold in the state to come from "alternative" sources by 2021. Future policy shifts are under consideration, including Governor Josh Shapiro’s proposed PRESS initiative, which aims to mandate that 35% of Pennsylvania’s electricity comes from clean energy sources by 2035 2.

2. Market Structure​

Pennsylvania operates a deregulated electricity market established under the Electricity Generation Customer Choice and Competition Act of 1996. This structure separates service into two distinct components: Generation (Supply) and Distribution (Wires). While consumers can shop for competitive Electric Generation Suppliers (EGS) for energy supply, the local Electric Distribution Company (EDC) maintains regulated responsibility for infrastructure maintenance and power delivery 66.

Utility Ownership​

The state features a mix of utility ownership structures regulated primarily by the Pennsylvania Public Utility Commission (PUC):

  • Investor-Owned Utilities (IOUs): For-profit corporations (e.g., PECO Energy, PPL Electric, Duquesne Light) that are fully regulated by the PUC 6.
  • Municipal Utilities: Owned by local governments (approx. 35 electric programs), typically self-governed unless serving outside their corporate limits 6.
  • Electric Cooperatives: Non-profit entities owned by members (14 distribution co-ops), often serving rural areas and represented by the Pennsylvania Rural Electric Association (PREA) 66.

System Operator​

The PJM Interconnection serves as the Independent System Operator (ISO) and Regional Transmission Organization (RTO) for Pennsylvania. Established as a power pool in 1927, PJM is a non-profit entity regulated by the Federal Energy Regulatory Commission (FERC) that coordinates the high-voltage grid and manages wholesale electricity markets for over 65 million people across 13 states 666.

Retail Choice Statistics​

As of early 2026, the market exhibits a disparity in participation rates between customer classes:

  • Residential Participation: Approximately 26-27% of residential customers are enrolled with a competitive supplier 6.
  • Industrial Participation: Over 86% of large industrial customers utilize retail choice 6.
  • Average Rates: The average residential rate is roughly 19.31 ¢/kWh, with an average monthly bill of $152.74 6.

Market Developments​

Recent volatility in the PJM capacity market has led to significant rate increases in 2025 and 2026. Consequently, state officials, including Governor Josh Shapiro, have increased scrutiny on competitive residential plans citing concerns regarding high markups and confusing terms compared to regulated default rates 6.

⚠️ Uncertainty: The search results list "Hancock-Wood Electric Cooperative" as an example of a Pennsylvania cooperative 6. This requires verification, as Hancock-Wood is typically associated with Ohio, not Pennsylvania.

3. Clean Energy Policy​

Pennsylvania's primary clean energy mandate is established under the Alternative Energy Portfolio Standard (AEPS) Act of 2004. This legislation requires electric distribution companies and generation suppliers to source 18% of all retail electricity sales from alternative energy sources, a final target reached in 2021 that remains the ongoing requirement 7[1]. The 18% target is divided into two tiers:

  • Tier I (8%): Includes "new" renewable resources such as wind, solar, low-impact hydropower, and geothermal.
  • Tier II (10%): Includes broader alternative sources such as waste coal, large-scale hydropower, and municipal solid waste 8[2]9[5].

The AEPS includes a specific solar carve-out (set-aside) of 0.5% within the Tier I requirement 9[5]. Compliance is achieved through the purchase of Alternative Energy Credits (AECs), which represent one megawatt-hour (MWh) of qualified generation and have a three-year life cycle. Notably, since 2017, the solar carve-out has operated under a "closed border" policy, meaning only solar PV systems physically located within Pennsylvania qualify 10[1]8[2].

Legislative Updates and Future Goals​

While the AEPS targets have remained static since 2021, there are active efforts to modernize the state's standards. Governor Josh Shapiro and lawmakers have advanced the "Lightning Plan" in 2025–2026, aiming to significantly increase mandates through proposed legislation such as the PRESS (Pennsylvania Reliable Energy Sustainability Standard) and PACER (Pennsylvania Climate Emission Reduction Act) 11[2][3].

The state has also established broader climate goals under the Pennsylvania Climate Action Plan 2024, aiming for statewide net-zero greenhouse gas emissions by 2050. This includes intermediate targets of reducing emissions by 26% below 2005 levels by 2025, and by 50–52% by 2030. The electricity sector strategy calls for a "carbon-free grid" by 2050, though the state currently faces challenges due to a heavy reliance on natural gas (approx. 60% of power) and low renewable penetration (approx. 4%) 12[2][3].

Energy Efficiency Mandates​

Separate from generation standards, Act 129 of 2008 mandates energy consumption and peak demand reductions for large utilities. The state is currently reviewing this act for potential updates as part of the Governor's broader energy strategy 10[1].

4. Utility Landscape​

Pennsylvania's electric utility sector is a mix of investor-owned utilities (IOUs), electric cooperatives, and municipal utilities. The state operates under a deregulated market structure where utilities act as Electric Distribution Companies (EDCs) responsible for the infrastructure (wires and poles), while customers may purchase generation from third-party suppliers 13.

Investor-Owned Utilities (IOUs) The market is dominated by three major holding companies: Exelon, PPL Corporation, and FirstEnergy 13. These entities are regulated by the Pennsylvania Public Utility Commission (PA PUC) 10. Major IOUs include:

  • PECO Energy Company: An Exelon subsidiary and the state's largest utility, serving the Philadelphia area 10.
  • PPL Electric Utilities: A subsidiary of PPL Corporation serving central and eastern Pennsylvania 10.
  • Duquesne Light Company: Operates in the Pittsburgh and Allegheny County region 10.
  • FirstEnergy Pennsylvania Subsidiaries: Including Met-Ed, Penelec, Penn Power, and West Penn Power 10.
  • UGI Utilities, Inc. & Pike County Light & Power: Smaller IOUs serving specific counties 10.

Electric Cooperatives Pennsylvania is home to 13 electric distribution cooperatives that serve approximately 4% of the state's residents, primarily in rural areas 14. These are private, not-for-profit businesses owned by the members they serve. Most receive wholesale power from the Allegheny Electric Cooperative, Inc., a generation and transmission co-op they collectively own 14.

Municipal Electric Utilities Community-owned utilities operated by local borough governments are represented by the Pennsylvania Municipal Electric Association (PMEA), which has 35 member boroughs operating public power systems 15.

Regulation and Shopping Unlike IOUs, electric cooperatives and municipal systems are generally not regulated by the PA PUC regarding rates and services. Additionally, customers in cooperative and municipal territories typically cannot shop for alternative electricity suppliers through PA Power Switch, as these entities are exempt from the state's electric deregulation laws 10.

5. SSS-Eligible Resources​

ResourceTypeCapacity (MW)SSS EligibleNotes
Large Hydroelectric (aggregate)Hydro670✅ Yes (pre-RPS)Legacy hydro facilities

⚠️ The eligibility of specific biomass resources under SSS standards may require verification regarding specific sustainability criteria.

6. EAC/REC Registry Infrastructure​

Pennsylvania utilizes the PJM Generation Attribute Tracking System (PJM-GATS) as the official electronic registry to track the creation, ownership, and retirement of Renewable Energy Certificates (RECs) and Energy Attribute Certificates (EACs) 1617.

Operational Framework PJM-GATS functions as an "all-generation" registry, assigning a unique serial number to every megawatt-hour (MWh) of electricity generated to prevent double-counting 1816. It serves as the primary platform for the Pennsylvania Public Utility Commission (PUC) to verify compliance with the state's Alternative Energy Portfolio Standards (AEPS) 16.

Registration Process Participation in the market requires a two-part process:

  1. State Certification: Generators must first apply for certification through the state administrator (PennAEPS) to verify the facility meets legal requirements for Tier I or Tier II resources and obtain a state certification number 197.
  2. Registry Enrollment: Once certified, the system is registered in PJM-GATS, where electronic certificates are issued for every MWh produced 17.

Market Specifics

  • SRECs: Solar Renewable Energy Certificates (SRECs) tracked in PJM-GATS typically have a three-year lifespan before they expire 1620.
  • Interoperability: While PJM-GATS is the primary system for the region, it supports the import and export of RECs with other major tracking systems such as M-RETS and WREGIS to facilitate market liquidity 18.

7. Grid Emissions​

Generation Mix​

Scope 2 Reporting​

  • SB 253 requires Scope 2 reporting for companies >$1B revenue

Source: EPA eGRID, EIA, state regulatory filings

References​

Sources & Last Updated​

Research Date: 2026-03-10
Data Sources: EIA, EPA eGRID, state regulatory filings, SerpAPI research aggregation

This page was generated using automated research and may contain inaccuracies. Verify critical data with primary sources.

Footnotes​

  1. PA Power Switch ↩

  2. U.S. Energy Information Administration (EIA) (.gov) ↩ ↩2 ↩3

  3. Low-Carbon Power ↩

  4. Commonwealth of Pennsylvania (.gov) ↩

  5. Choose Energy ↩ ↩2

  6. ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13 ↩14

  7. pennaeps.com ↩ ↩2

  8. Database of State Incentives for Renewables & Efficiency ↩ ↩2

  9. The Institute for Energy Research ↩ ↩2

  10. PA PUC (.gov) ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9

  11. Pennsylvania House Democratic Caucus ↩

  12. files.dep.state.pa.us ↩

  13. Exelon ↩ ↩2

  14. Pennsylvania Rural Electric Association ↩ ↩2

  15. Pennsylvania Municipal Electric Association ↩

  16. U.S. Environmental Protection Agency (.gov) ↩ ↩2 ↩3 ↩4

  17. Penn State Extension ↩ ↩2

  18. Green-E ↩ ↩2

  19. Sol Systems ↩

  20. SRECTrade ↩