This is an engineered plan for getting 100% of our electricity from multiple renewable sources. Each state, and country have a blueprint mix of doing this. And it pays for itself in short order.
Clean Energy - The Solutions Project
The sun energy that strikes the earth in one day could power ALL human needs for 27 years.
Think about that for a moment, please.
We could use more storage for today's grid. Storage is already here - we just need to build more.
When renewable energy is distributed over a wide area, and there are 3 or more sources, then the output is MORE dependable than what we have now.
Now, generation systems break with no predictability. Nuclear plants not only break unexpectedly, but they must be shut down to refuel and to be maintained. When this happens, we lose all the power production. When a few wind turbines out of thousands stop working or are stopped for maintenance - the rest all continue to work. When a cloud shadows a solar PV array, it does reduce the output, but all the other arrays continue to work.
When we also have biogas, and/or tidal, and/or wave, and/or large storage capacity - then we can easily produce all the power we need.