You need slightly over 1 lithium atom per fusion event. So for ~40% heat to electricity efficiency, you'd need about 7 grams of lithium for 150 MWh of electrici

You need slightly over 1 lithium atom per fusion event. So for ~40% heat to electricity efficiency, you'd need about 7 grams of lithium for 150 MWh of electricity. A 1 GWe plant would consume about 403 kg of lithium per year, about as much as in 5 Tesla Model 3 Battery packs.