STEP and batteries using 2021 averages

electricitymaps / electricitymaps-contrib

A real-time visualisation of the CO2 emissions of electricity consumption

https://app.electricitymaps.com

GNU Affero General Public License v3.0

3.5k stars 932 forks source link

STEP and batteries using 2021 averages #6647

Open GlennAndre29 opened 5 months ago

GlennAndre29 commented 5 months ago

When did this happen?

Constant

What zones are affected?

Zones with STEP and/or batteries

What is the problem?

The data used for the carbon intensity of STEPs and batteries is detailed as average 2021. Three matters are raised with that:

I do not find the same values for the 2021 data (ex: Portugal is noted as 155 for average 2021 which is not neither production nor consumption average for 2021)
2021 seems quite far from latest data. For countries with fast transitions like Portugal, Finland or Netherlands it can make a huge difference
These averages seem quite inaccurate as the storage is mostly done in period of high production of low carbon electricity

Maybe it was already answered but I am new to this github and quite ignorant about how to research informations there.

Many thanks

GlennAndre29 commented 5 months ago

And I add one issue : are they double counted at production time and a second time when it is given back from storage?

VIKTORVAV99 commented 5 months ago

@florianscheidl you worked a bit on updating all of these, what is the status of that and is there anything I can do to help?

GlennAndre29 commented 5 months ago

@VIKTORVAV99 thanks for the consideration of the matter. But actually I think that the major problem is that emissions of the production are counted twice (one at the real electricity production time and two at the giving back to the network with the use of this average) while emissions of the batteries construction is not taken into account.

Indeed, we should not consider average CO2 intensity averages but CO2 intensity of batteries with their CO2 cost against their number of cycles during their lifespan (giving the Wh distributed to the network).

Same for STEPs

florianscheidl commented 5 months ago

@florianscheidl you worked a bit on updating all of these, what is the status of that and is there anything I can do to help?

Happy so see that you are picking this up. We did reprocessing for specific regions back when we updated the capacities. Since then, I haven't been working on this. It is one of the items that we will discuss when we look into processes to keep our methodology up to date. For now our focus is on other projects. I think for now we can approach this during slack weeks. @VIKTORVAV99 , what do you think?

VIKTORVAV99 commented 5 months ago

@florianscheidl you worked a bit on updating all of these, what is the status of that and is there anything I can do to help?

Happy so see that you are picking this up. We did reprocessing for specific regions back when we updated the capacities. Since then, I haven't been working on this.

It is one of the items that we will discuss when we look into processes to keep our methodology up to date.

For now our focus is on other projects. I think for now we can approach this during slack weeks. @VIKTORVAV99 , what do you think?

I think that makes sense, I have a few projects going on myself that I need to finish up before starting on this but slack week should be perfect for this.

GlennAndre29 commented 5 months ago

Thank you for considering it but I am still worried by this double count of CO2 emissions for the production both at the production and when it leaves storage.

leon-hard commented 3 months ago

According to my reverse calculations, double counting is occuring for reported total emissions at EM, but not for emission intensity. See my posts here:

https://github.com/electricitymaps/electricitymaps-contrib/issues/6746

syaouanc commented 3 months ago

I agree there is no double count for emission intensity.

It still lacks the emissions of the batteries/pumped hydro construction, and it would be important to use up to date data for the emissions linked to the stored electricity (using recent datas, and using datas from when we are actually charging storage devices).

You could also integrate the storage efficiency.

VIKTORVAV99 commented 3 months ago

It still lacks the emissions of the batteries/pumped hydro construction, and it would be important to use up to date data for the emissions linked to the stored electricity (using recent datas, and using datas from when we are actually charging storage devices).

You could also integrate the storage efficiency.

FYI this is something we do want to do but we have not yet found good sources on both the overall emission for construction (and operational emissions) or the efficiency.

If any of you know any good sources around the topic we would be very interested.