Tesla founder Elon Musk claims to be able to fix what ails Puerto Rico, with his battery technology. He says his battery solution can scale up.

Heck, if scalability is no issue, let’s power the world.

Not so fast: What’s the cost?

Will Musk’s $250,000 donation foot the bill for 3.5 million homes without power?

More specifically, how many homes will $250,000 power? In what timeframe?

Mike “Mish” Shedlock