Navigating PJM Capacity Costs: What Auction Results Mean for Ohio Commercial Bills

If your Ohio commercial electric bill jumped without a matching jump in kWh, capacity is often the quiet driver. Capacity is not the energy commodity line on its own—it is the cost of ensuring enough resources will be available when the regional grid peaks. PJM Interconnection runs that market for Ohio and most of the surrounding region. When its Base Residual Auction (BRA) clears at historically high levels, the effect shows up in retail supply quotes, pass-through line items, and renewal “sticker shock,” not only in wholesale headlines.

This page is a practical map from auction result → contract language → bill. It is not a copy of our other capacity notes: those cover delivery-year lag into 2026 budgets, summer bill pressure and product design, and Peak Load Contribution operations.

What the landmark BRA actually cleared

For the 2025/2026 delivery year (June 1, 2025 through May 31, 2026), PJM’s Base Residual Auction cleared near $269.92 per MW-day across much of the RTO footprint, compared with roughly $28.92 per MW-day in the prior BRA—widely reported as more than an 800% increase. PJM’s own auction materials and industry coverage (including Power Engineering and Americas Power analyses) document that step-change and the drivers behind it: tighter supply offers, higher peak load forecasts, generator retirements, interconnection backlog, and FERC-approved reliability/accreditation reforms.

Primary reference: PJM capacity market / BRA materials (see RPM / Base Residual Auction reports).

Later BRAs have not returned to the old low-price regime. Trade reporting on subsequent auctions describes elevated clearing levels and continued tight reliability margins. Treat “capacity is expensive” as a multi-year planning assumption for Ohio C&I—not a one-summer anomaly.

Capacity vs energy vs delivery (Ohio-specific)

Ohio commercial customers typically face three different conversations:

Layer	Who sets it	What it pays for	Can you shop it?
Energy / generation supply	Competitive retail supplier (CRES) or default supply path	Electrons used (kWh) and product structure	Often yes, via competitive supply
Capacity obligation embedded in supply	Wholesale BRA + how your retail product is written	Resource adequacy for system peaks	Indirectly—through product design and PLC
Delivery / distribution	Utility of record (AEP Ohio, Duke Energy Ohio, Illuminating Company, Ohio Edison, Toledo Edison, AES Ohio)	Wires, many riders, outage restoration	Generally no—confirm on the bill

PUCO oversees competitive retail electric service rules; shopping supply does not change who owns the poles. Bill literacy: how to read a commercial energy bill.

How auction prices reach your facility

1. All-in fixed supply (capacity “inside” the ¢/kWh)

You may not see a separate capacity line. The supplier baked an assumption about capacity into the fixed price. When BRAs jump:

• Existing fixed deals can look “cheap” until they expire (the supplier may be underwater on capacity).
• Renewals reprice to the new world—sometimes with a large step-up even if usage is flat.

2. Capacity pass-through / hybrid products

Capacity (or residual capacity true-ups) appears as its own adder or seasonal adjustment. You feel BRA outcomes earlier and more transparently—but only if you actually read the exhibits.

3. Mis-ranked RFPs

A common Ohio procurement failure after 2024–2025:

Supplier A: 6.9¢ “fixed”
Supplier B: 6.6¢ “fixed”

…except B’s 6.6¢ is energy-heavy with open capacity, and A is full-requirements. Without a capacity treatment column by delivery year, the RFP ranks fiction. Process: energy RFP guide.

Peak Load Contribution: the annual dial most operators ignore

Capacity charges often scale with how much load you contributed during system peak windows (Peak Load Contribution / related tags—names vary by utility and settlement path). Cutting kWh in April does little if you still set a high tag on a few critical summer (or winter) hours.

Operational levers that are unique to capacity cost control:

1. Know whether your accounts publish PLC/NSPL-style values on bills or supplier reports.
2. Pre-plan sheddable load for forecasted system stress days (non-critical HVAC setpoints, batch processes, EV chargers, decorative loads)—never life safety or food safety.
3. Log actions; memory is not measurement.
4. Feed the story into the next supplier package so risk is priced, not guessed.

Deeper PLC playbook: Peak Load Contribution guide. Demand charges are related but not identical: demand charges explained.

Illustrative math (not a quote)

Suppose a site’s capacity-relevant peak tag is 200 kW (0.2 MW). At $270/MW-day, rough annual capacity-scale exposure is on the order of:

0.2 MW × $270/MW-day × 365 ≈ $19,700/year

Before the jump near $29/MW-day, the same tag was nearer $2,100/year. Product design, true-up rules, and utility recovery paths change the exact bill line—but the order of magnitude is why boards notice.

What to put on every bid grid after high BRAs

Column	Question the supplier must answer in writing
Product type	Full-requirements fixed, block/index, hybrid?
Capacity by delivery year	Fixed into ¢/kWh, estimated pass-through, or open?
Change-in-law / regulatory	Who holds future rule or BRA residual risk?
Bandwidth	Swing % and true-up method
Fees	Broker compensation equalized across rows (fees)
Term & start	Align with enrollment windows

If a salesperson cannot complete the capacity column, do not award on a verbal energy rate.

Ohio multi-site reality

A Columbus plant on AEP Ohio, a Cleveland clinic on The Illuminating Company, and a Cincinnati HQ on Duke Energy Ohio should not share one unlabeled “Ohio rate target.” Capacity risk still applies across PJM, but delivery riders, rate codes, and enrollment differ. Split packages by utility when needed; label every meter.

Large-load policy (e.g., AEP Ohio’s data center class after 2025 PUCO action) does not move ordinary GS meters onto a data-center schedule, but it is part of the same regional cost conversation: AEP data center tariff implications.

A 30-day action sequence (capacity-focused)

Week 1 — Diagnosis
Pull 12–24 months of full PDF bills. Mark supply vs delivery. Note any capacity-like line items. List contract end dates.

Week 2 — Tag literacy
Ask current supplier or utility contacts for PLC/capacity tags. Identify whether last summer’s operations set an expensive tag.

Week 3 — Product policy
Decide with finance: prefer full-requirements fixed for budget certainty, or accept pass-through capacity with monitoring? Document who can approve term length.

Week 4 — Market test
Run multi-bidder outreach with identical data and capacity columns. Equalize fees. Award on a written grid—not a same-day teaser.

Data packaging: building an energy data room.

FAQ — capacity auctions for Ohio commercial buyers

Does a high BRA mean my bill doubles next month?

Not automatically. Timing depends on your product, delivery year, and whether capacity is fixed or passed through. Flat kWh does not guarantee a flat bill at renewal.

Is capacity the same as demand charges on the utility bill?

No. Demand ($/kW) on delivery bills and wholesale capacity obligations are related through peaks but are not the same charge. Both reward peak awareness.

Should we only buy 12-month deals until prices “normalize”?

Short tenors reduce long lock-in regret and increase rollover work. Many buyers ladder volume across dates instead of all-or-nothing timing bets. Product fit: fixed vs variable.

Where do I verify auction numbers?

Start with PJM RPM/BRA reports. Secondary industry summaries are useful for narrative but should not replace primary figures in board decks.

Sources

• PJM Interconnection — capacity market / BRA reports
• PJM Inside Lines auction coverage — procurement and price-signal reporting
• PUCO — Ohio competitive retail electric service context
• Industry reporting on the 2025/2026 BRA step-change (e.g. Power Engineering summary of ~$269.92 vs ~$28.92/MW-day)

Illustrative guidance for Ohio commercial buyers—not a binding quote, legal advice, or guarantee of savings. Confirm product exhibits, utility tariffs, and enrollment rules on your accounts.

Next step

Upload bills for a capacity-aware supply comparison · 833-264-7776