"Renewable sources are much easier to build,"
Easy to build is one thing - easy to build AND make them viable is another.
"reducing the risk of blackouts by plant failure"
Riiight. And how often do you hear of a power plant , regardless of its fuel , going completely unplanned offline? And even if it did there is usually enough resilience in the system to cover it. Whereas wind and wave power goes offline every time its a calm day and solar power is useless at night! I'll go with the minute risk off a whole power plant going down thanks.