DK coal/biomass discrepancy between energinet and ENTSOE

corradio commented 2 years ago

It has been brought to our attention (on twitter) that the data from ENTSOE might be different from what is published by energinet (even though ENTSOE data come from energinet in the first place). This seems to provide some discrepancies on biomass / coal. Help would be appreciated here!

SorenJessing commented 2 years ago

@corradio this has been pointed out before. Your final comment was:

"yay! This probably means we should rescrap the entirety of our Danish data, now that some power plants are categorised differently."

What happened afterwards?

SorenJessing commented 2 years ago

It has been discussed in 2019 in this thread as well.

It seems like some manual update of capacity data has been done since, but still pretty significant discrepancies, such as:

Coal (DK1+DK2 combined), which is 1671 MW higher than EOY 2020
Fossil Oil (DK1+DK2 combined), which is 842 MW higher than EOY 2020
Biomass (DK1+DK2 combined) is 552 MW higher than EOY 2020 (but only 17 MW higher if Waste and decentral Biogas generators are included)
Fossil Gas (DK1+DK2 combined) is 7 MW lower than EOY 2020 - NOTICE: 25,8% biogas in danish natural gas seems not accounted on Electricitymap. https://energinet.dk/Gas/Biogas
Biogas (DK1+DK2 combined) 134 MW seperately registered EOY 2020 are missing (small gas engine generators dedicated to decentral biogas plants, at which they are installed)

Wind DK1 and Wind DK2 however are pretty align with Energistyrelsen's Master data register for wind turbines (updated end of September 2021), and Solar capacity seems well updated as well, so I guess this has been updated manually after Kriegers Flak Offshore Windfarm was comissioned.

I don't know how to access ENTSO-E's streaming data, or Energinet's streaming data on fuel sources or specific plants for that matter. I can only check backwards to compare Electricitymap's accumulated data with Energinet.dk and Energistyrelsen, year by year, which indicates still heavy discrepancies, not only related to biomass and coal.

Below table includes the latest update from ENTSO-E to compared to the numbers from Energistatistik 2020 showing very significant discrepancies in Fossil Coal, Fossil Oil and Solar capacities (others are within 4% accurate):

Production Type | 2020 (DK1+DK2) | Energistatistik 2020 | -- | -- -- | -- | -- | -- | -- | [MW] | [MW] | Discrepancy Wind Onshore | 4402 | 4559 | -157 | -3% Wind Offshore | 1700 | 1701 | -1 | 0% Solar | 1013 | 1304 | -291 | -22% Hydro Run-of-river and poundage | 7 | 7 | 0 | 0% Fossil Hard coal | 3656 | 1739 | 1917 | 110% Fossil Gas | 1739 | 1662 | 77 | 5% Fossil Oil | 1009 | 168 | 841 | 501% Biomass | 1872 | 1848 | 24 | 1% Other renewable (Biogas) | 137 | 134 | 3 | 2% Waste | 384 | 401 | -17 | -4% Total Grand capacity | 15596 | 12988 | 2410 | 19% https://transparency.entsoe.eu/generation/r2/installedGenerationCapacityAggregation/show https://ens.dk/sites/ens.dk/files/Statistik/energistatistik2020.pdf

I don't know the cause of the discrepancies, but I assume it is because ENTSO-E simply stopped the updating years ago. ENTSO-E is in other words not a realiable data source.

corradio commented 2 years ago

@mathilde-daugy is this being addressed as part of our efforts on regional emission factors? Thanks in advance for the clarification.

ghost commented 2 years ago

@mathilde-daugy is this being addressed as part of our efforts on regional emission factors? Thanks in advance for the clarification.

Yes, thank you for flagging this. I'm currently looking at the generation per unit data we have extracted for 2021 and it looks like some plants are labeled with the wrong fuels (the plant highlighted below should be biomass and not coal). This will be taken into consideration for the calculation of regional emission factors.

I don't know why there are such big discrepancies for hard coal and oil capacities. For oil, there is only one power plant in DK with oil as a main fuel and it has a capacity of 520MW so the ENTSO-E 1 GW seems unlikely. Regarding the high hard coal capacity, I suspect that there is some double-counting as most biomass plants were converted from coal but this is just a hypothesis.

jenshoej commented 3 months ago

The capacity data for Solar in Denmark is very outdated. The newest account by the Danish Energy Agency states 3.645 GW solar, whereas the ENTSO-E data is 2.3 GW

The report can be found here: https://ens.dk/sites/ens.dk/files/Sol/solcelleopgoerelse_1._kvartal_2024.pdf

corradio commented 1 month ago

@madsnedergaard can this be closed given your recent work on emission factors?

electricitymaps / electricitymaps-contrib

DK coal/biomass discrepancy between energinet and ENTSOE #3602