Gas turbines with carbon capture?

[koen-vg]

Describe the feature you'd like to see

I am correct that the current sector-coupled version of the model actually doesn't have any support for gas turbines (open- or combined cycle) with carbon capture? (Or oil powerplants for that matter.) It seems like an obvious technology to add, along the lines of the existing coal_cc option.

Unless these is anything obvious I missed, I'd be happy to quickly add an option for this.

Maybe one question, configuration-wise, is how to organise all this conventional generation. It's arguably already a bit messy to have both the conventional_generation and coal_cc options in the sector: config. I would consider removing the coal_cc option and rather add some functionality to add_generation to parse whether each carrier ends in _cc. Then you could have (including as many technologies as possible):

conversional_generation:
  coal: coal
  coal_cc: coal
  lignite: lignite
  lignite_cc: lignite
  OCGT: gas
  OCGT_cc: gas
  CCGT: gas
  CCGT_cc: gas
  oil: oil
  oil_cc: oil
  nuclear: uranium

For the variants with carbon capture one could use costs, efficiencies, etc. from biomass CHP capture or cement capture parameters; both are used in prepare_sector_network but also they are almost identical.