I-SEM Daily Briefing — 9 August 2026

Price Profile #

Std dev €26.02/MWh · Median €150.48/MWh · Periods above €150: 25 of 48 (52%)

Price vs Wind #

Mean wind: 21.5% · Range: 14.4%–33.9%

Week in Context #

Price Duration Curve #

Periods above €150: 25 (52% of day) · Above €200: 4 (8% of day)

Peak / Off-Peak Spread #

Peak avg (07:00–22:00): €148.77/MWh · Off-peak avg: €156.23/MWh · Spread: €-7.46/MWh

BESS Dispatch Signal #

Simulated 1MW/2MWh battery, one optimal DAM cycle. Gross before network charges and capacity costs.

Commentary #

Sunday reset back toward a single-cycle shape, much like the 3rd. Price drifted down from an overnight €150-ish band into a flat trough — pinned at exactly €115.40 for most of 11:30 to 15:00 — then built steadily through the afternoon into one clean evening peak, €203.07 at 21:30, with 4 of 48 periods clearing €200. Wind held a moderate, fairly stable 21.5% through the day, doing little to disturb the shape either way.

Peak/off-peak spread came in only slightly negative (–€7.46), close to flat, because the evening peak — while the week’s second-highest — sits right at the edge of the 22:00 cutoff and doesn’t fully offset an elevated off-peak average. Std dev of €26.02 puts this squarely mid-pack for the week.

Storage landed mid-table too: €113 gross off a €115 charge and €202 discharge, 48.8% ROI — almost a repeat of the 3rd’s textbook Sunday, just with a firmer floor and a sharper peak. A quiet close to the weekend before Monday’s usual step-up in demand.

For the week-level picture and what it means if you're buying, see Weekly Analysis — 10–16 August 2026.