People who think that fusion will solve climate chrisis don't understand urgency of the situation.
Climate scientists say we have to act in next 10 years. The first test reactor that is expected to produce more thermal energy than it needs is under construction and planned to start comissioning in 2025 and fusion reaction in 2035. https://en.wikipedia.org/wiki/ITER#Timeline_and_status
If everything goes well, this will lead to constructon of nuclear fusion power station that demonstrates electricity production in 2040s (...)