So, an offshore windfarm for 3gw costs 30bn more or less
According to some googling reactors cost 5bn plus for construction only, and the biggest reactors product 1gw, so offshore windparks cost twice as much as nuclear reactors, are 100% safe while nuclear reactors will NEVER be 100% safe, and that's not taking into account operational costs and fuel costs...

So yeah, we need nuclear! There's no way around it! There just aren't any alternatives...