I-SEM Daily Briefing — 3 August 2026

Price Profile #

Std dev €22.49/MWh · Median €154.49/MWh · Periods above €150: 30 of 48 (62%)

Week in Context #

Price Duration Curve #

Periods above €150: 30 (62% of day) · Above €200: 3 (6% of day)

Peak / Off-Peak Spread #

Peak avg (07:00–22:00): €159.38/MWh · Off-peak avg: €156.46/MWh · Spread: €2.92/MWh

BESS Dispatch Signal #

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

Commentary #

Sunday gave the market its cleanest single-cycle day in over a week: one trough, one peak, no double humps. Price eased from €160 at 23:00 down to €144 by 03:30, ticked up briefly around the 05:00–06:30 morning ramp, then settled into a proper trough from 10:00 to 14:30 — €127.56 the low, held for a full hour either side of 13:00. From there it built steadily through the afternoon into a single evening peak, €206.00 at 19:30, before easing back to €174.40 by close.

That shape is what finally flips the peak/off-peak spread positive again — €2.92, the first positive reading since the 29th, after five straight days where the real extremes sat outside the daytime window. Std dev at €22.49 was the second-lowest of the week. With lighter Sunday demand and nothing pulling price sharply into either overnight bookend, this was about as close to a textbook I-SEM day as the week produced.

Storage landed squarely mid-pack: €88 gross, 34.1% ROI, charging at €128 and discharging at €203 for a €74 spread — unremarkable, much like the 27th. A calm end to a choppy week; worth seeing whether Monday brings the volatility back.