My experience with rooftop solar showed me what’s holding others back from embracing the technology. The first time our electricity meter ran backwards, it felt like a small, nerdy win. On a sunny spring afternoon, our roof was producing more electricity than we could use. The house was warm, the battery was charged and power was flowing back into the grid, earning us money with each kilowatt-hour. When we installed solar panels, it felt like an easy way to help the climate and lower our electricity bill, all without changing much about how we live. A year later, that early optimism has stayed with me. But I did not expect that my decision would turn from a climate choice into an exercise in using spreadsheets. In Switzerland, installing home solar is less a plug-and-play decision than a financial calculation shaped by subsidies, tax rules and shifting regulations. Navigating it is not for the faint-of-heart or low-of-cash. What is your opinion? Join the debate: Up-front costs ...