

The days the steam engine are numbered.
Not really. Unless there are some breakthroughs in technology that significantly lower capex & opex for grid scale energy storage, they’ll be sticking around for a long time.
There is an asterisk on the 1TW number, and that asterisk is capacity factor. In practice it means that depending on the time of year and location, the effective output of your solar panel will be between 0-40% of label capacity .
In my country for instance, you can expect 0-2% output from a panel in the winter time, which also happens to coincide with the peak demands (heating). Luckily, our politicians had some foresight in the 70s & 80s and built lots of hydro and nuclear power, which has been the backbone of our grid ever since (despite attempts to dismantle it).





























1W of installed capacity would yield 24Wh of energy at 100% in 1 day at capacity. (1W * 24h = 24h)
Hence, you are getting an average of 6Wh / 24Wh * 100% = 25% capacity. Your winter numbers end up being 4-12% and summer 25-50% of capacity.
Wh/Wi/h is your capacity factor.