This week on Riding Unicorns, we welcome back Alan Chang, Founder and CEO of Fuse Energy.Since his last appearance, Fuse has scaled rapidly, reaching a $5B valuation and setting its sights on £1B ARR. In this episode, Alan breaks down what it really takes to build a full-stack energy company from scratch, and why solving energy is one of the hardest and most important challenges of our time.We cover:• Why lowering the cost of energy is a trillion-pound opportunity • The reality of building in a deeply complex, regulated industry • What it actually means to “buy the grid” and why it matters • How Fuse has already reduced energy costs by 15% • The next big product: plug-and-play solar and battery for every home • Why time, not capital, is the biggest constraint in building a company • Hiring world-class engineers and building a high-performance culture • Lessons from Revolut and applying them to energy • Why the best founders are obsessed with speed, not comfortAlan also shares his mindset as a founder, why he rarely looks back at achievements, and why he’s more convinced than ever that this problem can be solved.Clear thinking on how to build a generational company in one of the world’s most complex industries.