Managed factory ops 15 years, led 4 solar installs, saved £150k. Learned to trust data, not sales pitches. https://www.pfdbookmark.win/factory-solar-panels-cut-our-energy-bills-by-32k-in-year-one-with-zero-downtime-weekend-install-roof-warranty-intact-real-savings-5-year-payback-skeptical-about-sales-hype-i-ll-share-actual-case-studies-and-financing-tips-that-worked-for-us