Renewable Energy Side Hustles for Sustainability Fans

I’ve been looking into ways to turn my passion for sustainability into a side gig, especially around renewable energy. I’m curious if anyone has tried something similar maybe setting up small solar installations for local homes or helping businesses with energy efficiency audits. I’d love to hear what’s worked for you, or if there are opportunities in consulting or community projects that I might not have considered. What do you think are the most accessible options for someone with a background in quality control?