Brydo, renewables did not produce 97.4% of Scotland’s electricity in 2020. You missed out the key word equivalent. When the wind blows Scotland exports renewably sourced electricity, when it doesn’t Scotland imports electricity from mostly gas powered stations. Without import and export of energy, Scotland could not provide a continuous supply from renewable energy alone. The last figure I found from Scottish Power shows 50% of its energy is generated from gas – that may be out of date though.