What if a summer heatwave cascades into a PJM grid collapse?
A heat-driven cascading PJM failure forces mid-Atlantic rolling blackouts, spiking regional power and pulling gas peaker demand higher. The closest read is the 2006 PJM heat-wave strain and the August 2003 Northeast cascade, both of which exposed transmission fragility under peak load. Forward angle: PJM's queue is jammed with datacenter load (Northern Virginia 'Data Center Alley'), so reserve margins are thinning faster than capacity is added — the macro spillover is small but the regional power-price tail is real.
how we built this number — every step
The class rate is measured from our dated, sourced event library (decade-normalized Poisson — the full table is public at base_rates.json). The variant’s share within its class is the analyst’s editorial call, published so you can audit it. A wider range means thinner precedent. Full recipe: methodology · scored at Reality Check.
The butterfly cascade
How this trigger trickles across markets, left → right — the root shock, its first‑order moves, then the ripple effects. Drag any node; tap a market for its real price history.
Resolution timeline — how this probability is moving
Our model's odds (gold) over time vs the crowd's (Polymarket, blue), from the past toward the 0–6 months horizon. Each dot is a real macro event that nudged the probability — green pushed it up, red pushed it down. Tap a dot for the source. The gold path is an illustrative reconstruction anchored to today's estimate — real dated events, not a live re-estimate history.
What it would mean
If this plays out, it is a mixed shock. A heat-driven cascading failure across PJM darkens the mid-Atlantic, forcing rolling blackouts from Virginia to New Jersey. The trigger decomposes into signed root‑shocks — Natural gas ▲ — which propagate through our causal graph to the markets below.
If it happens — the markets it would move
Biggest moves first. Projected moves are cascade-model priors; hist A–B% = what comparable past events actually did (measured abnormal returns), and model prior · unmeasured marks markets with no analogue backing yet. Tap any market for its price history.
| Market | Class | Projected move | |
|---|---|---|---|
| 1 | Natural gas NGon Hyperliquid 📈 chart | Commodity | ▲ +0.5% hist -3.37–+2.32% |
Probable recommendation
Historical precedent — what analogous events actually did
Across 14 analogous events (overlap‑weighted), as abnormal returns — market beta stripped, so it's the event's own effect, not the market backdrop. Shown at 20 days (persistent) and 5 days (immediate); ↺ fades = the two horizons disagree. Confidence = consistency × sample × significance.
| Asset | History says | Abnormal (20d · 5d) | Hit | n | Confidence | vs cascade |
|---|---|---|---|---|---|---|
| NG NG | SHORT | -3.8% · 5d -1.8% | 61% | 14 | 0.21 | ⚠ differs |
| Gold XAU | LONG | +0.6% · 5d -0.1% ↺ fades | 58% | 14 | 0.15 | · |
| Volatility VIX | SHORT | -3.2% · 5d -3.0% | 55% | 14 | 0.07 | · |
| US dollar DXY | SHORT | -0.0% · 5d -0.4% | 48% | 14 | 0.00 | · |
| Bitcoin BTC | LONG | +4.1% · 5d -1.0% ↺ fades | 33% | 8 | 0.00 | · |
| High-yield credit HYG | LONG | +1.2% · 5d -0.2% ↺ fades | 50% | 12 | 0.00 | · |
| 10y yield DGS10 | LONG | +4bp · 5d +3bp | 35% | 14 | 0.00 | · |
Why this probability
No PJM cascading precedent; reserves tight but full mid-Atlantic collapse rare. A base‑rate‑anchored prior, continuously scored against what actually happens — not a forecast.