Nobody needs can't-do engineers.

So he found out that lead-acid batteries aren't enough.

1) A fleet of electric/plug-in hybrid cars are a pretty big battery. Build more of those.

2) Power-to-gas seems like a good avenue, too. It also has an existing infrastructure.

http://www.eon.com/en/media/news/press-releases/2014/9/1/eon...

You can also generate methane instead of hydrogen. Not super-efficient at the moment, i know. But a solvable problem.

But this article originally stated we would need fusion to be able to survive without conventional fuels.

Solving the storage problem of renewables just seems so much easier than achieving nuclear fusion.