FAQ Energy Law

The Commerce Clause of the U.S. Constitution gives Congress the power to regulate interstate commerce. In energy law, this often creates a “dormant” Commerce Clause issue, where states are prohibited from passing laws that discriminate against out-of-state energy sources.

For example, if a state mandates that its utilities only buy renewable energy produced within its own borders, it may face legal challenges for hindering interstate trade. Balancing a state’s right to set its own environmental goals with the federal requirement for open, non-discriminatory markets is a constant source of litigation in the U.S. energy sector.

A Renewable Portfolio Standard (RPS) is a state-level regulation that requires utilities to provide a certain percentage of their electricity from renewable sources, such as wind, solar, or geothermal energy. Because there is no federal RPS in the United States, the landscape is a patchwork of different requirements.

Compliance: Utilities usually meet these goals by either generating renewable power or purchasing Renewable Energy Certificates (RECs).

Impact: These standards are the primary drivers for green energy investment in the U.S., pushing states toward “100% clean energy” targets by specific dates (e.g., 2040 or 2050).

Each state has a Public Utility Commission (PUC), sometimes called a Public Service Commission. These bodies regulate “behind-the-meter” and local distribution issues. Their primary mission is to ensure that consumers have access to safe, reliable utility services at fair rates.

PUCs hold “rate cases” where they decide how much a utility can charge customers. They also approve the construction of new power plants and determine the rules for net metering, which dictates how much credit a homeowner gets for sending solar power back to the grid.

The National Environmental Policy Act (NEPA) requires federal agencies to assess the environmental effects of their proposed actions before making decisions. For energy law, this means any project requiring a federal permit—like an interstate pipeline or a wind farm on federal land—must undergo a rigorous review.

Agencies must prepare an Environmental Impact Statement (EIS) or an Environmental Assessment (EA). These documents analyze potential damage to ecosystems, water quality, and local communities. NEPA does not mandate the “greenest” outcome, but it ensures that environmental consequences are transparent and considered in the planning process.

In the United States, the energy market is split into two distinct jurisdictions:

Wholesale Markets: This involves the sale of electricity between generators and utilities before it reaches the consumer. These markets are regulated by FERC and often managed by Regional Transmission Organizations (RTOs).

Retail Markets: This is the sale of electricity from the utility directly to your home or business. Retail rates and service rules are governed strictly by State Public Utility Commissions.

This “bright line” distinction determines whether a legal dispute belongs in federal or state court.

The federal government uses the tax code to incentivize energy production. The two most significant tools are:

• Investment Tax Credit (ITC): Primarily for solar, this allows a credit for a percentage of the cost of installing an energy system.
• Production Tax Credit (PTC): Primarily for wind, this provides a per-kilowatt-hour credit for electricity generated during the first 10 years of operation.

The Inflation Reduction Act (IRA) significantly expanded these credits, adding “adders” for projects located in “energy communities” (areas historically reliant on fossil fuels) or those using domestic manufacturing.

Eminent domain allows the government or certain private entities to take private land for “public use,” provided they pay “just compensation.” In energy law, this is most common with pipelines and transmission lines.

Under the Natural Gas Act, if FERC grants a “Certificate of Public Convenience and Necessity” to a pipeline company, that company gains federal eminent domain authority. Electricity transmission is more complex, as eminent domain for power lines is traditionally a state-level power, though recent federal laws have sought to expand federal authority to fast-track “National Interest Electric Transmission Corridors.”

Regional Transmission Organizations (RTOs) and Independent System Operators (ISOs) are independent entities that manage the high-voltage electric grid across large regions or multiple states. They act as “air traffic controllers” for electricity.

They operate wholesale markets, ensuring that the lowest-cost power is dispatched first while maintaining grid reliability. While not all parts of the U.S. have an RTO (the Southeast and West are largely traditionally regulated), they are essential in areas like the Northeast (PJM, NYISO) and Texas (ERCOT) for fostering competition among power generators.

Nuclear energy is governed primarily by the Nuclear Regulatory Commission (NRC). Unlike other forms of energy where states have significant say, the federal government almost entirely preempts state law regarding nuclear safety and radiation hazards.

The NRC oversees:

• Reactor licensing and renewals.
• Operational safety and security.
• The decommissioning of old plants.

While states can sometimes block nuclear plants based on economic arguments (costs to ratepayers), they generally cannot pass laws based on concerns over nuclear safety, as that remains the sole domain of the federal government.