Solar just smashed every record. Installations hit an all-time high. Costs? Free falling. The price of solar panels has dropped by 90% in the last decade. That’s not a typo. It’s now cheaper to build new solar farms than to run existing coal plants in most countries. China led the charge. It installed more solar last year than the entire world did in 2015. But here’s the kicker: the sun doesn’t always shine. That’s where batteries come in. Storage costs have also plummeted. They’re down 80% since 2010. The result? A clean energy boom nobody predicted. Even oil executives are scrambling to invest. The old guard called solar a niche. Now it’s the fastest-growing energy source in history. The question isn’t if solar will dominate. It’s how fast.