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PJM capacity auctions help determine how much businesses and other electricity customers pay to ensure enough power is available during future peak-demand periods. When capacity prices rise, those costs can show up in commercial electricity rates and monthly bills.
Quick Answer: What Is a PJM Capacity Auction?
A PJM capacity auction is a market process used to make sure enough electricity supply will be available in the future.
PJM, the regional grid operator for 13 states and Washington, D.C., runs these auctions to secure power resources before they are needed. Generators that clear the auction commit to being available during future high-demand periods, such as hot summer days when air conditioning use is high.
In simple terms: energy markets pay for electricity used today. Capacity markets pay to make sure enough power is available in the future.
Why PJM Capacity Auctions Matter for Businesses
Many businesses think electricity costs are only based on how much power they use. But in PJM, part of your cost can also come from capacity charges.
Capacity charges help pay for the power supply needed to keep the grid reliable during peak demand. These charges are influenced by PJM capacity auction prices and can become a meaningful part of your overall electricity cost.
That means your bill can increase even if your facility uses the same amount of electricity as before.
What Is PJM?
PJM Interconnection is a regional transmission organization, often called an RTO. It manages the movement of wholesale electricity across a large part of the Mid-Atlantic and Midwest.
The PJM region includes all or parts of 13 states and Washington, D.C., including Pennsylvania, Ohio, New Jersey, Maryland, Virginia, Illinois, Delaware, and others.
PJM’s job is to help keep the grid reliable. That means balancing electricity supply and demand not only in real time, but also in future planning years.
How Does the PJM Capacity Auction Work?
PJM runs a capacity auction called the Base Residual Auction, or BRA.
The purpose of the auction is to secure enough power resources to meet future peak demand. Power generators and other resources offer capacity into the auction. The auction then determines which resources clear and what price will be paid for that capacity.
Resources that clear the auction commit to being available when the grid needs them. In return, they receive capacity payments.
Those capacity costs are ultimately passed through the electricity market and can affect what businesses pay for power.
Energy Markets vs. Capacity Markets
It helps to separate energy from capacity.
Energy is the electricity your business uses.
This is measured in kilowatt-hours, or kWh. It reflects actual consumption.
Capacity is the ability to meet demand when the grid needs power most.
This is tied to reliability. It helps make sure enough power is available during peak periods.
A business can manage its electricity usage carefully and still be affected by higher capacity costs if PJM auction prices rise.
Why Are PJM Capacity Prices Rising?
PJM capacity prices have increased because the market is facing pressure from several directions.
Common drivers include:
- Retirements of older power plants
- Higher electricity demand from data centers
- Growth in electrification and commercial load
- Delays in building new generation and transmission infrastructure
- Tighter supply and demand conditions across the grid
- Changes in market rules and auction structure
When available supply tightens and future demand increases, capacity prices can rise.
What Happened in the 2025/2026 PJM Capacity Auction?
For the 2025/2026 delivery year, which began June 1, 2025, PJM capacity prices increased sharply compared with the prior year.
For much of the PJM region, the auction cleared around $269.92 per megawatt-day. That was a major increase from the prior year and created higher cost pressure for many customers in the region.
For businesses, the important point is simple: higher capacity auction prices can lead to higher electricity costs, even if usage stays flat.
What This Means for Your Business
If your business operates in the PJM region, capacity costs may be an important part of your electricity strategy.
Higher capacity prices can affect your business in several ways:
- Higher monthly electricity costs
- Less budget certainty
- More exposure under variable or pass-through contracts
- Greater need to understand contract structure
- More importance around timing your electricity purchase
- More value in understanding your facility’s peak usage patterns
This is especially important for businesses with large facilities, multiple sites, high HVAC usage, manufacturing equipment, refrigeration, or other energy-intensive operations.
Why Market Timing Matters in PJM
In PJM, capacity costs are only one part of the electricity price. Energy prices, supplier risk premiums, contract structure, and timing can also affect what your business pays.
When market conditions are changing, waiting until your contract is close to expiration can limit your options. A more proactive approach gives your business time to compare offers, understand capacity exposure, and decide whether it makes sense to lock in a rate or continue monitoring the market.
At Arise, we believe electricity procurement is not just about who you buy from — it is about knowing when to buy. That is why we help businesses look beyond the headline rate, monitor market signals, and make energy decisions with better visibility.
What Is a Capacity Charge?
A capacity charge is the portion of an electricity cost tied to ensuring enough power is available during peak demand periods.
In PJM, capacity charges are often connected to your facility’s peak load contribution. This is sometimes referred to as a capacity tag.
Your capacity tag is generally based on how much electricity your facility uses during certain peak-demand periods. If your business uses a lot of power during those peak hours, your future capacity-related costs may be higher.
Can Businesses Avoid Capacity Charges?
In most cases, businesses cannot avoid capacity charges entirely. Capacity is part of how the PJM market supports grid reliability.
However, businesses may be able to better manage their exposure.
That starts with understanding your contract, your usage profile, your capacity tag, and how capacity costs are passed through in your electricity rate.
How Businesses Can Manage PJM Capacity Cost Exposure
Businesses can take several steps to better manage capacity-related costs.
Review your electricity contract.
Some contracts pass capacity costs through separately, while others include them in a fixed rate. Understanding your contract structure is important for budgeting.
Understand your peak usage.
Capacity costs may be influenced by when your business uses the most electricity. Reviewing peak demand patterns can help identify opportunities to reduce exposure.
Pay attention to market timing.
When capacity and energy markets are volatile, the timing of your electricity purchase can have a major impact on your total cost.
Evaluate fixed vs. variable options.
Fixed-rate contracts may provide more budget certainty, while other structures may create more exposure to market changes.
Plan ahead before renewal.
Waiting until your contract is close to expiration can limit your options. A more proactive approach gives your business more time to evaluate the market.
Common Mistakes Businesses Make
Many businesses do not think about capacity costs until they show up in the bill.
Common mistakes include:
- Focusing only on the energy rate
- Not understanding whether capacity is fixed or passed through
- Waiting too long to review renewal options
- Assuming usage is the only factor driving cost increases
- Not reviewing peak demand patterns
- Comparing supplier offers without understanding what is included
A better approach is to look at the full cost structure, not just the headline rate.
How Arise Helps
Arise helps commercial electricity buyers make sense of PJM market changes, supplier options, capacity cost exposure, and contract timing.
PriceWatch delivers one clear signal: buyer’s market, fair market, or high cost market. That gives buyers a simpler way to understand whether market conditions may be favorable before they begin the quote process.
When the signal is right, Arise connects buyers to 20+ vetted suppliers with custom quotes refreshed daily. Arise advisors can also help you evaluate options, understand tradeoffs, and move when the market supports the decision.
We track the market. We signal when to move. You decide how involved you want to be.
Frequently Asked Questions
What is the PJM capacity auction?
The PJM capacity auction is a market process that helps ensure enough electricity supply will be available in the future. It pays power resources to be available during future peak-demand periods.
What does PJM stand for?
PJM stands for Pennsylvania-New Jersey-Maryland. Today, PJM manages the electric grid across a much larger region that includes all or parts of 13 states and Washington, D.C.
What is the Base Residual Auction?
The Base Residual Auction, or BRA, is PJM’s main capacity auction. It secures power resources for a future delivery year and helps set capacity prices for the region.
Why do PJM capacity auctions affect electricity bills?
Capacity auction prices influence the cost of ensuring enough power is available during future peak-demand periods. Those costs can be passed through to electricity customers, including businesses.
Why are PJM capacity prices going up?
PJM capacity prices have increased because of tighter supply, rising demand, power plant retirements, data center growth, infrastructure delays, and market changes.
What is a capacity charge on an electricity bill?
A capacity charge is a cost tied to ensuring enough power is available when the grid needs it most. In PJM, this cost may be connected to your facility’s peak usage during certain high-demand periods.
Can my business reduce PJM capacity costs?
Your business may not be able to avoid capacity charges entirely, but you may be able to manage exposure by understanding your contract, reviewing your peak usage, and planning procurement decisions more strategically.
Does my business need to be in PJM for this to matter?
Yes. This specific auction applies to the PJM region. If your business is located outside PJM, different grid operators and market rules may apply.
Ready to Better Understand Your Electricity Costs?
If your business operates in the PJM region, capacity costs may play a bigger role in your energy budget than you realize.
Arise can help you review your bill, compare supplier options, and understand how market timing may affect your costs.
Upload a bill or create a free account to see how your current energy profile compares.
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