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Hourly prices dont match

Open alexandervba opened this issue 5 months ago • 2 comments

Hi, I recently switched to this integration from EPEX spot. The hourly prices should match I assume... However I find a mismatch, below are reported prices for 24/11 in Belgium according to this integration and according to EPEX. The prices are actually the same, but the hours are inconsistent. also Entso-e is only reporting 23h instead of 24h (this might be normal?)

Thanks already if you would have the time to look into this.

state_class: measurement prices_today:

  • time: '2025-11-24 00:00:00+00:00' price: 0.06813
  • time: '2025-11-24 01:00:00+00:00' price: 0.06834
  • time: '2025-11-24 02:00:00+00:00' price: 0.06633
  • time: '2025-11-24 03:00:00+00:00' price: 0.06486
  • time: '2025-11-24 04:00:00+00:00' price: 0.0741
  • time: '2025-11-24 05:00:00+00:00' price: 0.08851
  • time: '2025-11-24 06:00:00+00:00' price: 0.09355
  • time: '2025-11-24 07:00:00+00:00' price: 0.09914
  • time: '2025-11-24 08:00:00+00:00' price: 0.10527
  • time: '2025-11-24 09:00:00+00:00' price: 0.11348
  • time: '2025-11-24 10:00:00+00:00' price: 0.11992
  • time: '2025-11-24 11:00:00+00:00' price: 0.12213
  • time: '2025-11-24 12:00:00+00:00' price: 0.13225
  • time: '2025-11-24 13:00:00+00:00' price: 0.14
  • time: '2025-11-24 14:00:00+00:00' price: 0.1364
  • time: '2025-11-24 15:00:00+00:00' price: 0.16007
  • time: '2025-11-24 16:00:00+00:00' price: 0.18777
  • time: '2025-11-24 17:00:00+00:00' price: 0.16222
  • time: '2025-11-24 18:00:00+00:00' price: 0.13359
  • time: '2025-11-24 19:00:00+00:00' price: 0.13479
  • time: '2025-11-24 20:00:00+00:00' price: 0.12192
  • time: '2025-11-24 21:00:00+00:00' price: 0.11113
  • time: '2025-11-24 22:00:00+00:00' price: 0.09664

If I compare this to the EPEX prices:

hour Price (€/kWh) 00 - 01 0,071 01 - 02 0,068 02 - 03 0,068 03 - 04 0,066 04 - 05 0,065 05 - 06 0,074 06 - 07 0,089 07 - 08 0,094 08 - 09 0,099 09 - 10 0,105 10 - 11 0,113 11 - 12 0,120 12 - 13 0,122 13 - 14 0,132 14 - 15 0,140 15 - 16 0,136 16 - 17 0,160 17 - 18 0,188 18 - 19 0,162 19 - 20 0,134 20 - 21 0,135 21 - 22 0,122 22 - 23 0,111 23 - 24 0,097

alexandervba avatar Nov 24 '25 05:11 alexandervba

Maybe related to timezones? ENTSO-e seems to use GMT (+00:00) whereas EPEX price is one hour ahead. (CET ?)

rosch99 avatar Nov 26 '25 07:11 rosch99

It seems that this integration reads sequence 2 prices, not sequence 1.

martin3000 avatar Dec 10 '25 08:12 martin3000