I-SEM Daily Briefing — 26 August 2026

Market Snapshot

Metric	Value
Mean DAM Price	€194.41/MWh
Median Price	€177.79/MWh
Std Dev	€42.99/MWh
Peak Price	€275.14/MWh (18:30)
Min Price	€151.1/MWh (15:00)
Price Range	€124.04/MWh
Periods above €150	48 of 48 (100%)
Periods above €200	17 of 48 (35%)
Peak Avg (07–22)	€208.28/MWh
Off-peak Avg (22–07)	€171.28/MWh
Peak/Off-Peak Spread	€37.0/MWh
Cheap/Dear Spread	€151.43/MWh → €271.78/MWh (€120.35)

Price Profile #

Std dev €42.99/MWh · Median €177.79/MWh · Periods above €150: 48 of 48 (100%)

Week in Context #

Price Duration Curve #

Periods above €150: 48 (100% of day) · Above €200: 17 (35% of day)

Peak / Off-Peak Spread #

Peak avg (07:00–22:00): €208.28/MWh · Off-peak avg: €171.28/MWh · Spread: €37.0/MWh

Cheap window: €151.43/MWh · Dear window: €271.78/MWh · Spread: €120.35/MWh — the actual cheapest and dearest 2-hour blocks of the day, wherever they fall on the clock

Commentary #

No generation-mix read today, but the price curve tells its own story: everything that was true Tuesday got worse. Mean jumped to €194.41 (+€16 on the day), the peak climbed to €275.14 at 18:30 — same clock slot as yesterday’s spike, just €37 higher — and periods above €200 nearly doubled to 17 of 48 (35%). The floor held roughly where it was (€151.10 at 15:00), so this wasn’t a broader repricing — it’s the same evening-peak shape, stretched.

Peak/off-peak spread widened to €37.00 from €19.07, and the cheap/dear window blew out to €120.35 from €90.61. Same script, turned up a notch — whatever eased yesterday’s evening ramp isn’t showing up this week.

Half-hourly data — 2026-08-26

Period	Time	Price (€/MWh)
1	23:00	166.69
2	23:30	163.39
3	00:00	160.79
4	00:30	156.31
5	01:00	156.46
6	01:30	156.46
7	02:00	157.84
8	02:30	159.04
9	03:00	157.30
10	03:30	156.13
11	04:00	156.82
12	04:30	157.87
13	05:00	175.41
14	05:30	180.17
15	06:00	188.27
16	06:30	192.95
17	07:00	196.46
18	07:30	214.00
19	08:00	225.00
20	08:30	231.65
21	09:00	215.00
22	09:30	200.44
23	10:00	194.33
24	10:30	182.09
25	11:00	171.60
26	11:30	168.18
27	12:00	161.20
28	12:30	160.72
29	13:00	155.62
30	13:30	151.54
31	14:00	151.54
32	14:30	151.54
33	15:00	151.10
34	15:30	155.31
35	16:00	172.01
36	16:30	189.36
37	17:00	235.00
38	17:30	272.29
39	18:00	265.45
40	18:30	275.14
41	19:00	274.24
42	19:30	265.00
43	20:00	266.66
44	20:30	274.11
45	21:00	264.82
46	21:30	257.00
47	22:00	239.49
48	22:30	201.70