A clean energy company now has a market cap rivaling ExxonMobil

The news last week that NextEra Energy, a U.S. utility and renewable energy company, briefly overtook ExxonMobil and Saudi Aramco to become the world’s most valuable energy producer shows just how valuable sustainable businesses have become. It’s yet another proof point that there are billions of dollars available for companies focused on renewable energy alone — and a sign that, finally, the floodgates may be about to open for companies that build their businesses to service a