London based energy start-up (@temenergy) just raised $75M led by @lightspeedvp at a $300M+ valuation to build the Stripe of energy. CEO & Co-Founder Joe McDonald says: "It's [energy] defining the new world order. You want to produce sovereign AI that's competitive at a national level, you need cheaper electricity to be able to win in that battle". @temenergy CEO believes: You basically end up in a tourist state within 10 years if you don't solve the electron problem, especially when you're…