Estonia grid frequency

Grid frequency · 28 September 2026

Name: Estonia grid frequency, 2026-09-28
Creator: Volton
License: https://creativecommons.org/licenses/by/4.0/

Real-time AC frequency on the Estonian grid, which has been part of the Continental European Synchronous Area since 9 February 2025. The whole CESA shares one frequency in real time, Estonia and Portugal see the same number. Sourced from Elering, downsampled to 5-min mean and refreshed hourly.

Frequency stayed in the 49.940–50.050 Hz band (156 samples).

The largest deviation from the 50.000 Hz nominal was 0.060 Hz at 07:05.

Source: Elering via Volton, CC-BY-4.0.

Daily stats

Avg	Min	Max	Samples
49,999 Hz	49,940	50,050	156

Per 15-minute interval

15-minute MTU clearing prices for 28 September 2026 (Europe/Tallinn).
Time (Europe/Tallinn)	Grid frequency
00:00	49,990
00:05	50,010
00:10	50,000
00:15	49,990
00:20	50,010
00:25	50,000
00:30	49,960
00:35	50,000
00:40	50,010
00:45	49,990
00:50	50,020
00:55	50,020
01:00	49,970
01:05	49,970
01:10	50,000
01:15	50,000
01:20	49,980
01:25	50,010
01:30	50,000
01:35	50,020
01:40	50,020
01:45	50,000
01:50	50,010
01:55	50,000
02:00	49,990
02:05	49,990
02:10	49,990
02:15	50,000
02:20	50,000
02:25	50,010
02:30	49,990
02:35	50,000
02:40	50,000
02:45	50,000
02:50	50,020
02:55	50,010
03:00	49,980
03:05	49,990
03:10	49,990
03:15	50,000
03:20	49,990
03:25	50,010
03:30	50,000
03:35	50,000
03:40	50,010
03:45	50,010
03:50	50,000
03:55	49,990
04:00	49,990
04:05	50,000
04:10	49,970
04:15	49,990
04:20	50,000
04:25	49,980
04:30	50,000
04:35	50,000
04:40	49,990
04:45	49,990
04:50	49,990
04:55	50,000
05:00	49,990
05:05	50,000
05:10	50,000
05:15	50,000
05:20	50,000
05:25	49,990
05:30	49,990
05:35	50,000
05:40	49,990
05:45	50,000
05:50	49,990
05:55	50,000
06:00	50,010
06:05	49,990
06:10	49,990
06:15	50,010
06:20	49,990
06:25	49,990
06:30	49,990
06:35	49,980
06:40	49,990
06:45	50,000
06:50	49,970
06:55	49,980
07:00	50,010
07:05	49,940
07:10	49,960
07:15	50,000
07:20	49,960
07:25	49,970
07:30	50,020
07:35	49,970
07:40	49,970
07:45	50,010
07:50	49,970
07:55	49,960
08:00	50,000
08:05	49,970
08:10	49,980
08:15	50,000
08:20	49,990
08:25	49,980
08:30	49,990
08:35	50,000
08:40	50,020
08:45	49,980
08:50	49,990
08:55	50,000
09:00	49,970
09:05	49,980
09:10	50,020
09:15	50,000
09:20	50,030
09:25	50,040
09:30	49,980
09:35	50,010
09:40	50,020
09:45	49,940
09:50	50,030
09:55	50,030
10:00	49,960
10:05	50,010
10:10	50,030
10:15	49,990
10:20	50,020
10:25	50,020
10:30	49,940
10:35	50,030
10:40	50,040
10:45	49,990
10:50	50,030
10:55	50,030
11:00	49,940
11:05	49,990
11:10	50,020
11:15	49,970
11:20	50,010
11:25	50,020
11:30	49,990
11:35	50,020
11:40	50,030
11:45	50,000
11:50	50,040
11:55	50,030
12:00	50,000
12:05	50,030
12:10	50,050
12:15	50,020
12:20	50,030
12:25	50,030
12:30	50,010
12:35	50,020
12:40	50,030
12:45	50,000
12:50	50,020
12:55	50,030

Concepts

CESA (Continental European Synchronous Area)System imbalance / FRCE FCR (Frequency Containment Reserve)

Source: Elering via Volton, CC-BY-4.0. · Hub: 7-day chart and methodology →

Grid frequency · 28 September 2026

Frequency stayed in the 49.940–50.050 Hz band (156 samples).

The largest deviation from the 50.000 Hz nominal was 0.060 Hz at 07:05.

Avg

Min

Max

Samples

49,999 Hz

49,940

50,050

156

Per 15-minute interval

15-minute MTU clearing prices for 28 September 2026 (Europe/Tallinn).
Time (Europe/Tallinn)	Grid frequency
00:00	49,990
00:05	50,010
00:10	50,000
00:15	49,990
00:20	50,010
00:25	50,000
00:30	49,960
00:35	50,000
00:40	50,010
00:45	49,990
00:50	50,020
00:55	50,020
01:00	49,970
01:05	49,970
01:10	50,000
01:15	50,000
01:20	49,980
01:25	50,010
01:30	50,000
01:35	50,020
01:40	50,020
01:45	50,000
01:50	50,010
01:55	50,000
02:00	49,990
02:05	49,990
02:10	49,990
02:15	50,000
02:20	50,000
02:25	50,010
02:30	49,990
02:35	50,000
02:40	50,000
02:45	50,000
02:50	50,020
02:55	50,010
03:00	49,980
03:05	49,990
03:10	49,990
03:15	50,000
03:20	49,990
03:25	50,010
03:30	50,000
03:35	50,000
03:40	50,010
03:45	50,010
03:50	50,000
03:55	49,990
04:00	49,990
04:05	50,000
04:10	49,970
04:15	49,990
04:20	50,000
04:25	49,980
04:30	50,000
04:35	50,000
04:40	49,990
04:45	49,990
04:50	49,990
04:55	50,000
05:00	49,990
05:05	50,000
05:10	50,000
05:15	50,000
05:20	50,000
05:25	49,990
05:30	49,990
05:35	50,000
05:40	49,990
05:45	50,000
05:50	49,990
05:55	50,000
06:00	50,010
06:05	49,990
06:10	49,990
06:15	50,010
06:20	49,990
06:25	49,990
06:30	49,990
06:35	49,980
06:40	49,990
06:45	50,000
06:50	49,970
06:55	49,980
07:00	50,010
07:05	49,940
07:10	49,960
07:15	50,000
07:20	49,960
07:25	49,970
07:30	50,020
07:35	49,970
07:40	49,970
07:45	50,010
07:50	49,970
07:55	49,960
08:00	50,000
08:05	49,970
08:10	49,980
08:15	50,000
08:20	49,990
08:25	49,980
08:30	49,990
08:35	50,000
08:40	50,020
08:45	49,980
08:50	49,990
08:55	50,000
09:00	49,970
09:05	49,980
09:10	50,020
09:15	50,000
09:20	50,030
09:25	50,040
09:30	49,980
09:35	50,010
09:40	50,020
09:45	49,940
09:50	50,030
09:55	50,030
10:00	49,960
10:05	50,010
10:10	50,030
10:15	49,990
10:20	50,020
10:25	50,020
10:30	49,940
10:35	50,030
10:40	50,040
10:45	49,990
10:50	50,030
10:55	50,030
11:00	49,940
11:05	49,990
11:10	50,020
11:15	49,970
11:20	50,010
11:25	50,020
11:30	49,990
11:35	50,020
11:40	50,030
11:45	50,000
11:50	50,040
11:55	50,030
12:00	50,000
12:05	50,030
12:10	50,050
12:15	50,020
12:20	50,030
12:25	50,030
12:30	50,010
12:35	50,020
12:40	50,030
12:45	50,000
12:50	50,020
12:55	50,030