US Morning Demand Note, Friday, July 17, 2026

US Morning Demand Note, Friday, July 17, 2026 A broad heat pattern remains locked over the continental US, with cooling demand running well above seasonal norms across all four demand regions, and the 15-day national gas-weighted CDD total climbing further on the latest run. The synoptic picture points to a persistent upper-level ridge anchoring summer heat across the central and eastern US. Gas-weighted CDDs nationally have moved from 208 to 241 over the latest modelling window, against a seasonal normal of 124, an anomaly of 117 that reflects sustained above-normal cooling loads rather than a short-lived heat event. The run-to-run evolution shows a widening gap rather than convergence, with the largest single-day shift of 9.5 CDDs concentrated around July 30, suggesting the back end of the forecast window remains in play. The pattern is not converging toward neutral, the revision is additive. The Midwest is the most striking mover. CDDs there have jumped from 158 to 208 over the period, a delta of 50 against a seasonal normal of just 79, putting the anomaly at 129 CDDs above norm. For Chicago Citygate and MISO, this signals sustained power burn demand well into the back half of July and into early August. The Midwest is not typically a CDD-intensive market relative to the South, so an anomaly of this scale carries proportionally more pricing weight for regional basis and MISO spark spreads. The Northeast follows a similar trajectory. Algonquin and TETCO M3 face a 15-day CDD total of 198 against a 106 normal, a 91-CDD anomaly and a 46-unit upward revision from the prior run. For a region where gas-to-power burn competes with peaking oil and hydro dispatch, sustained above-normal heat raises the probability of pipeline capacity stress on heavy-load afternoons. The revision direction matters here: a 46-CDD move in the Northeast is not a rounding error. ERCOT prints the highest absolute CDD total at 369, though the revision was actually negative, down 26 from 394. Against a normal of 171 and an anomaly still sitting at 197, the absolute load picture remains extreme; the downward nudge reflects model trimming of the far end of the window rather than any meaningful break in the heat pattern. Waha and HSC pricing will reflect whether the ERCOT generation stack is clearing comfortably or whether the power sector is pulling additional gas burn from West Texas gathering points. The South and West are essentially flat run-to-run, with CDDs ticking from 336 to 337. Transco Z4 and SoCal face anomalies of 183 CDDs versus normal, a heat load that has been baked into pricing for several days and is neither worsening nor easing. Stability here means the risk skew comes from the zones showing revision rather than those already priced for extremes. What changes the picture: a trough dropping into the northern Plains or a faster ridge progression eastward would begin eroding the Midwest and Northeast anomalies, which are currently the most directionally active part of the forecast. A third consecutive upward revision in the back-window day cluster around July 30 would add to the case for sustained above-normal national burn. The ERCOT revision deserves watching, a continued trimming of the far tail would be the first signal the ridge is beginning to shed eastward.