# Renewables capacity assumptions

**URL:** <https://forum.ecmwf.int/t/renewables-capacity-assumptions/12425>\
**Category:** C3S - Datasets and Usage\
**Tags:** sis\
**Created:** [1 April 2025 13:03 UTC](https://forum.ecmwf.int/t/renewables-capacity-assumptions/12425 "2025-04-01T13:03:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Vaiva\_Petrikaite](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/v/e47774/32.png) [@Vaiva\_Petrikaite](https://forum.ecmwf.int/u/Vaiva_Petrikaite)\
**Post date:** [1 April 2025 13:03 UTC](https://forum.ecmwf.int/t/renewables-capacity-assumptions/12425/1 "2025-04-01T13:03:33Z")

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I am very interested in using _sis-energy-derived-projections_ table. I wonder what assumptions are being taken as regards installed wind and solar panel capacities. I understand that the capacity ratio factor is changing, that the climate variables affect production. However, the capacity assumptions play are role in the whole equation as well. I could not find any description in confluence how the capacities are projected to the future. Can anyone explain it and provide references to the algorithms?