Load Profile Analyser
Started: Mar 4, 2026
Upload your 15-minute load profile and instantly see what the next dynamic spot-price tariff would actually cost you.
Single-page tool built in an afternoon: drop in your smart-meter load profile, get a dynamic spot-price tariff calculation back. No backend, no account, everything runs in the browser. Designed to show consumers whether floating tariffs like aWATTar actually pay off for their consumption, before they switch. Spot data is bundled statically, no API costs.
Pure HTML + JS, single index.html plus spotdata.js with historical EPEX spot prices. Smart-meter exports are a zoo in practice (Wiener Netze CSV != Netz NÖ != Salzburg AG), the parser has to guess. Calculation vectorised across the profile, no JS-land loop. Vercel static, no build step.