A historic early-July heat dome is driving the biggest story in wholesale power markets today: PJM is forecast to break its 20-year-old all-time demand record, federal emergency orders are active in the Mid-Atlantic, and tight conditions extend across NYISO, MISO, and ISO-NE. ERCOT and CAISO are comparatively calm. Details by market below.
PJM — Record Demand Watch, Federal Emergency Orders Active
- 5CP Capacity Tags: Today (July 2) is a near-certain coincident peak day. PJM’s load forecast of 166,147 MW would exceed the all-time record of 165,563 MW set in 2006 (PA Environment Digest). Curtailment-capable customers should treat the 3-6 p.m. window as a must-act 5CP event; July 1 was also likely a 5CP hour.
- Real-Time LMP: Power prices from New York to Virginia are surging as heat threatens to overwhelm grids (Bloomberg). Expect elevated afternoon prices at Western Hub and AEP-Dayton; monitor PJM Data Viewer for real-time spikes.
- Demand Response: Maximum Generation and Load Management Alerts are extended through July 2, with Hot Weather and Low Voltage Alerts across the footprint through at least July 3 — advance notice that DR programs may be activated (PJM Inside Lines). Two DOE Section 202(c) emergency orders, signed June 30, authorize PJM to tap backup generation at data centers and other large-load sites and waive certain plant emissions limits through July 3 (Reuters via US News).
NYISO — Near-Record Load, Elevated Day-Ahead Prices
- Day-Ahead Pricing: New York peak demand is expected to approach 32 GW this week, just below the all-time record of roughly 34 GW, with day-ahead and real-time prices surging statewide (Bloomberg). Expect the widest zone spreads in NYC (Zone J) and Long Island (Zone K) during afternoon peaks.
- ICAP Tag Tracking: This week’s peaks are strong candidates for the summer coincident peak that sets ICAP tags for the 2027-2028 capability year. No new auction results in the last 24 hours; NYISO modified ICAP tag calculation rules effective this summer (Veolia).
- CBEP: No CBEP activation confirmed in public reporting as of this morning, but with load near records, reserve-shortage-driven DR calls remain possible today and tomorrow. Monitor NYISO demand response notices.
ERCOT — Stable, 4CP Season Active
- 4CP Season Tracking: The June-September 4CP window is active. The current heat dome is centered on the Midwest and East, not Texas, so today is unlikely to set the July 4CP interval — but ERCOT projects summer peak demand could exceed 92 GW in 2026, well above the 85.5 GW all-time record, so watch late-July and August afternoons (CultureMap).
- ORDC / Grid Conditions: No Weather Watch, conservation appeal, or notable ORDC adder events reported in the last 24 hours. ERCOT’s own risk assessment puts the chance of an emergency at 0.21 percent for July. Current conditions at the ERCOT dashboards.
ISO-NE — Tight but Adequate Through the Heat
- Load Forecasting: ISO-NE anticipates a peak near 25,850 MW Thursday, with roughly 26,000 MW daily during the heat wave, against about 29,000 MW of available summer supply. The operator expects tight conditions and notes that region-wide heat limits emergency assistance from neighbors (WWLP, WGME).
- FCM: No new Forward Capacity Market qualification events, de-list bids, or show-cause notices in the last 24 hours. This week’s peak is a likely candidate for the annual coincident peak used in capacity tag allocation.
MISO — Conservative Operations, Record Within Reach
- Grid Conditions: MISO has declared a Hot Weather Alert, Capacity Advisory, and Conservative Operations for most of this week, requiring members to defer discretionary maintenance and ready emergency resources; emergency pricing and emergency energy purchases are available next steps if needed (MISO). MISO says its own peak demand record could be challenged this week (ABC News).
- Zonal Pricing: Expect elevated LMPs and east-west congestion as MISO and PJM peak simultaneously, limiting inter-RTO support. Zone-level settlement detail was not published as of this writing; see Grid Status MISO for live spreads.
- PRA / Reliability Orders: No new Planning Resource Auction developments in the last 24 hours. Separately, DOE 202(c) orders remain in effect keeping generation units available in MISO, including the J.H. Campbell plant in Michigan (DOE 202(c) orders).
CAISO — Quiet, Watching Curtailment
- Flex Alerts: None issued or expected; the heat dome is an eastern event. CAISO’s 2026 Summer Assessment shows a 2,547 MW planning surplus plus roughly 3,379 MW of Strategic Reliability Reserve and emergency import support (CAISO).
- Renewable Curtailment: Curtailment remains structurally elevated in 2026 — midday solar curtailment jumped nearly 2 GW in spring — though EDAM operations since May give CAISO an additional outlet for surplus solar (Grid Status, EIA).
- NQC / RA: No new NQC updates or RA deficiency notices in the last 24 hours. About 6,194 MW of new RA-eligible capacity was expected online by June 30, including CAISO’s roughly 3,167 MW share of the SunZia wind project.
Cross-Market Watch
- Heat dome: Roughly 160 million people in 30 states are under extreme heat alerts, straining PJM, NYISO, MISO, and ISO-NE simultaneously and limiting inter-regional assistance (ABC News). Heat is expected to moderate after July 3.
- Federal action: DOE Section 202(c) emergency orders for PJM (data center curtailment authority, emissions waivers) run through July 3; additional 202(c) orders keep specific MISO units online (The Hill, DOE).
- Structural theme: Coverage across the event repeatedly ties grid stress to AI and data center load growth outpacing new supply — a narrative regulators and markets will carry into capacity auctions (Al Jazeera).
How to Use This for Marketing
- PJM 5CP urgency campaign: Today is likely a record-setting coincident peak. Curtailment providers and capacity consultants should send same-day alerts to PJM C&I customers framing July 1-3 as tag-setting hours, with a follow-up offer to audit whether clients actually curtailed during the peak window.
- Data center curtailment as a service: The DOE order authorizing PJM to tap backup generation at data centers is a first-of-its-kind precedent. DR providers can pitch hyperscale and colocation operators on formalizing flexible-load participation before regulators or capacity markets force the issue.
- NYISO and ISO-NE tag-season content: With this week’s peaks likely setting ICAP tags and ISO-NE capacity allocations, publish a post-event analysis next week showing exactly which hours set tags and quantifying savings for customers who curtailed — strong proof-point material for Q3 sales conversations.
- ERCOT forward positioning: Texas escaped this event, but ERCOT’s projected 92 GW summer peak means the 4CP story is still ahead. Use the eastern grid emergency as a timely hook to get ERCOT customers enrolled in 4CP curtailment programs before late-July peaks arrive.