Methodology questions, data corrections, and reader requests for new guides. Please pick the topic that best matches your message so we can route it to the right person.
Questions or corrections about the calculator, sources, or any published number. This is a personal project; replies are best-effort, but data-correction reports are always read.
Utility tariff datasets, state PUC announcements, or research-grade DSIRE extracts we should be using.
Installer sponsorship offers, paid backlink requests, guest-post pitches with affiliate links, SEO link exchanges.
Four inputs. Sixty seconds. Every number traceable to a public source.