Why the PJM 3IA Prices Cleared So Low

The 2026/2027 PJM 3rd Incremental Auction (3IA) cleared at $164/MW-day, well below the Base Residual Auction cap of $329.17/MW-day. The gap has generated questions from investors and developers trying to reconcile two seemingly contradictory signals from the same capacity market. The answer is that they are not contradictory at all. The BRA and the 3IA are structurally different mechanisms designed to answer different questions, and reading the 3IA as a bearish revision of the BRA is a category error.

What Is the PJM 3rd Incremental Auction?

PJM’s capacity market does not procure all reliability capacity in a single event. The Base Residual Auction (BRA), held approximately three years before the delivery year, is the primary procurement mechanism, clearing the full system reliability requirement against the available supply stack.

After the BRA, PJM holds a series of Incremental Auctions (1IA, 2IA, 3IA) at intervals as the delivery year approaches. Each successive incremental auction is designed to account for changes in system conditions that occurred after the BRA: revised load forecasts, updated resource accreditation, new supply coming online, or demand-side shifts.

The 3rd Incremental Auction runs approximately one year before the start of the delivery period. By this point, the overwhelming majority of the reliability requirement has already been secured. The 3IA is not a second price discovery event. It is a true-up mechanism procuring only the residual gap.

BRA vs. 3IA: Two Mechanisms, Two Different Market Logics

The BRA clearing at the administrative cap signals that PJM’s system could not meet its full reliability requirement at any price below the ceiling, a strong structural scarcity signal. The 3IA clearing at $164/MW-day signals something entirely different: the marginal cost of filling a small residual volume against a broader and more competitive post-BRA supply set.

Why Did the 3IA Clear at $164/MW-day? Three Structural Factors

1. Small Procurement Volume Limits Upward Price Pressure

The 2026/2027 3IA procured approximately 3 to 5 GW of incremental capacity. PJM’s total reliability requirement for a delivery year typically exceeds 150 GW. When the residual volume is this small relative to system size, the auction clears from the left tail of the remaining supply curve, accessing resources with lower reservation prices, without touching the costly marginal gigawatts that drove the BRA to its cap. Volume and price are not independent: a narrow procurement target structurally suppresses clearing levels.

2. The Available Supply Pool Expands Between the BRA and the 3IA

Resources that did not clear in the BRA remain eligible to offer into incremental auctions. By the time the 3IA runs, additional supply may have entered the market that was not available at the time of the BRA:

• Generation that came online after the BRA forward commitment window closed
• Demand response resources with revised accreditation under updated performance standards
• Import capacity with updated transmission availability or qualifying arrangements
• Battery storage resources with revised ELCC values reflecting improved performance data

More potential supply competing for a smaller procurement target compresses prices. The 3IA is not clearing against the same constrained supply environment that produced the BRA cap.

3. PJM Load Forecast Revisions Shift the Temporal Distribution of Need

PJM updates its load forecasts between the BRA and each incremental auction. When updated projections push anticipated demand growth further out in the delivery timeline, shifting load peaks from the prompt delivery year toward years two or three, the near-term reliability requirement appears smaller than what was priced into the BRA.

For the 2026/2027 cycle, revised data center load phasing and updated transmission upgrade schedules contributed to a smaller near-term residual need. Data center projects that were counted as prompt-year load in the BRA have seen some of that demand shift to later delivery years as interconnection timelines have extended. This reduced the volume the 3IA needed to clear, reinforcing the lower clearing price.

What the 3IA Price Actually Signals

The $164/MW-day 3IA result does not contradict the bullish capacity market story embedded in the BRA. The two prices answer different questions:

• The BRA at $329.17/MW-day answers: Can PJM procure full system reliability at a price below the administrative cap? In 2026/2027, the answer was no.
• The 3IA at $164/MW-day answers: What does the incremental residual adjustment cost, one year before delivery, against the post-BRA supply available? In 2026/2027, that adjustment cost $164.

A 3IA clearing at or above the BRA cap would be the alarming outcome, implying the system failed to procure sufficient reliability in its primary auction and was paying emergency prices for critical shortfalls. A 3IA clearing well below the BRA cap is normal functioning of a multi-auction capacity market architecture.

Implications for Capacity Investors and Project Finance

For developers, financiers, and offtakers incorporating PJM capacity revenue into asset valuations, the key takeaways from this 3IA outcome are:

1. Use the BRA price as the primary capacity revenue benchmark. The BRA is the structural price event for a delivery year. The 3IA is a correction mechanism reflecting updated conditions, not a market-wide repricing.
2. Monitor load forecast revisions between auctions. Shifts in PJM’s anticipated load growth timeline, particularly data center demand phasing driven by interconnection timelines, directly affect 3IA volumes and prices. These shifts do not retroactively change BRA revenue but do affect forward capacity value assessments.
3. Track ELCC and accreditation updates. Changes in Effective Load-Carrying Capability values for batteries, solar, and wind between the BRA and the 3IA can shift the residual supply-demand balance. Rising ELCC values for a technology category increase available accredited capacity and reduce residual need heading into the 3IA.
4. BRA-cleared capacity retains its contracted price. The 3IA result does not reprice resources that cleared in the BRA at $329.17/MW-day. Those obligations and revenue streams are fixed. The 3IA only prices the incremental volume procured in that auction.

Frequently Asked Questions

What is the PJM 3rd Incremental Auction (3IA)?

The PJM 3IA is the third in a series of capacity market true-up events held approximately one year before a delivery period. It procures only the residual reliability capacity not already secured in the Base Residual Auction or earlier incremental auctions, and it clears against a supply pool that includes post-BRA entrants and previously uncleared resources.

Why did the 2026/2027 PJM 3IA clear at $164/MW-day?

Three factors drove the low clearing price: a small procurement volume of 3 to 5 GW, an expanded post-BRA supply pool with more competition for that smaller target, and PJM load forecast revisions that shifted some near-term demand growth further out in the delivery timeline, reducing the residual reliability gap the 3IA needed to fill.

Does a 3IA price below the BRA cap indicate a loosening capacity market?

No. The 3IA and BRA prices measure different things. The 3IA clearing below the BRA cap is standard market behavior. The BRA price, which cleared at the administrative ceiling of $329.17/MW-day for 2026/2027, remains the primary indicator of structural supply-demand tightness.

How does PJM’s load forecast affect the 3IA?

When PJM revises its load forecasts between the BRA and the 3IA, shifting demand growth to later delivery years, the near-term residual reliability requirement decreases. A smaller residual need means a smaller 3IA procurement volume, which tends to clear at lower prices from the left tail of the available supply curve.

What resources are eligible to offer into the PJM 3IA?

Resources that did not clear in the BRA, capacity with updated accreditation values, new generation that came online after the BRA commitment window, demand response with revised performance data, and import capacity with updated availability can all offer into the 3IA.

What Investors Should Take Away

The PJM 3IA clearing at $164/MW-day is not a bearish signal. It is the capacity market architecture doing exactly what it was designed to do. The BRA reflects system-wide structural scarcity. The 3IA reflects the marginal cost of a small residual adjustment against a broader supply set under updated system conditions. Conflating the two produces a misread of market fundamentals.

For capacity investors, the relevant question is not why the 3IA cleared below the BRA cap. That is expected. The relevant question is whether the structural tightness that pushed the BRA to its administrative ceiling has changed. Based on current load forecasts, supply pipeline data, and accreditation trends, Noreva’s PJM capacity forecasting models indicate that the structural tightness driving BRA prices remains intact.