Is there another form of energy generations with "no risk of accidents"? I've read some statistics that say nuclear energy is already safer than all other forms

Is there another form of energy generations with "no risk of accidents"? I've read some statistics that say nuclear energy is already safer than all other forms of energy generation per kWh. As for proliferation risk I think it's becoming a moot point as countries like Iran, North Korea, etc., are already making their own highly enriched nuclear materials and can give it to whoever they want.