The ~20 year delay it would take to replace that 6.2 GW with nuclear would cause the emission of
20 years * 6.2 GW * 3000 GWh / GW / year * 367 tons / GWh = 136.5 million tons of CO2.
20 years * 6.2 GW * 3000 GWh / GW / year * 367 tons / GWh = 136.5 million tons of CO2.
New is good, known is better when you need to act with urgency to <fuel next generation AI/avert the climate crisis >.