Residual capacities of technologies in 2030

[khainsch]

A question for the base scenario which also will become relevant for the scenario variations:
How do we handle residual capacities of technologies which already exist in 2016 but will remain for longer than 2030? In the current format, existing capacities are also given for 2016 while non exist in 2030. That means, that the whole energy system will have to be built in 2030.

To give an illustrative example of some issues which might arise:
The politically targetted year of phasing out coal power plants is 2038, hence in 2030 coal will still be relevant in electricity generation. However, if all currently existing coal power plants are not carried over to 2030, the frameworks would have to make the decision to invest into coal power plants, which won't be usable in 2050.

My suggestion would be to extend the existing capacities to 2030 (and possibly 2050 if applicable? not sure). Of course, we would have to decide how many capacities would be carried over, since some power plants might stop producing beforehand.

[chrwm]

From the discussion 18.02.21 the following was noted:

• we take residual capacities in 2016 over to 2030 and 2050 based on the assumed remaining lifetime in 2016
• coal & nuclear will be phased out in respective years according to policy measures
• technologies without residual capacities in 2030 and 2050 cannot be invested in the respective year

[chrwm]

* we take residual capacities in 2016 over to 2030 and 2050 based on the assumed remaining lifetime in 2016

In the base scenario this will not be implemented. Possible for variation 1 or 2.
2030 starts with residual capacities from 2016.
2050 will have the optimised installed capacities of 2030 as its input.

[jonasVano]

I think the last comment is not accurate anymore, just for the record.

• for the base scenario we have all installed capacities in 2016 as a initial state
• in 2030 and 2050 they can be extended to a certain limit except for some technologies that are phased out

[StefanieBuchholz]

With the latest comment from Jonas, the current situation is recaped and from my perspective this is agreed by all of us so I believe we can close this?

[jonasVano]

yes I would say so

[sonercandas]

me too