As a serial tech entrepreneur, Greg Jackson entered a new arena in his career in 2016. He decided to shift his focus to the green energy revolution, pursuing a lifelong passion of his to protect the planet. The London-based founder started Octopus Energy Group, which has become the second largest energy supplier in the UK and has expanded operations to 14 countries and 5.1 million customers globally. Greg shares how he's using technology to help tackle climate change, why he's optimistic about the path to renewable energy, and why Al Gore becoming an investor was such a pinch-me moment.