Josh Goldberg has built three different solar companies, and each one taught him something the industry is still wrestling with today. In this episode, Hervé sits down with the founder of Astrum Solar, co-founder of Sunlight Financial, and CEO of Sunstone Credit to unpack why homeowners overwhelmingly prefer owning over leasing, why commercial solar has lagged behind residential despite having stronger economics, and how financing has been the missing piece. They also discuss why commercial installers should treat financing as part of every sale, how AI is speeding up commercial underwriting, why batteries are rapidly becoming a standalone business opportunity, and what residential installers need to know before expanding into commercial. If you're looking for practical lessons on scaling, financing, and where the next phase of solar growth will come from, this conversation is packed with them.