[throwaway210222]

> about 1200 GW of capacity

Since 1GWa* ≈ 8 million tonnes of CO₂ †, this is about a billion tonnes saved every year.

Sadly, we're about 3,000 Gt of CO₂ in excess in the atmosphere.

*: GWa: 1 GW 24h/d, every day, for a year

†: or about 1 Giza pyramid