The nuclear would basically be a 24 hour every day supply.
Any info on the consistency of the renewables supply? Is this a capability or an average?
Germany’s climate in northern Europe is such that it doesn’t get much sunshine as, say, Spain or Greece. Also, Germany doesn’t get as much wind as the US Midwest. The off-shore wind farms in the North Sea do get more wind and perform better than the onshore installations. Offshore wind, however, is quite expensive. Offshore wind turbines need to be installed in the open sea and the cables laid to get the power onshore.
Looking at the electricity generation for 2021, I calculate the following capacity factors for Germany’s solar, wind (both offshore and onshore), plus nuclear.
Germany full year capacity factors
Offshore wind: 35%
Onshore wind: 18%
Wind (combined): 20%
Nuclear (2021): 92%
Here is an example of how the above calculations are made…
For solar, the installed capacity at the end of 2020 was 54.07 Gigawatts (GW)
During 2021, solar produced 49,000 GWh of electricity
The Capacity Factor is therefore…
49,000 / (54.07 x 24 x 365) = 10.3%
A 10% capacity factor is pretty horrible. In the US, the average solar capacity factor is about 25% for PV systems. Thermal solar is a bit less.
Germany’s onshore wind capacity factor of 18% is also unimpressive. In the US, average wind capacity factor is about 35%. The US doesn’t have much offshore wind installed. Germany’s offshore wind has about the same capacity factor as the US onshore wind.
Germany’s nuclear capacity factor of 92% compares well with the US average of 92.7% for 2021. Nuclear is best for 24/7 baseload power. Wind and solar are intermittent, so cannot be used for baseload, nor are they very good for dispatchable, controllable power.