# Sparvo > Free web app for the Austrian electricity market (EPEX Spot AT, Europe/Vienna). Shows a 7-day spot-price forecast, calculates cheap charge windows for EVs and heat pumps, and includes site PV yield — using the same Hours Demand engine as SpotpriceAPI. Primary EMS integration path for installers is Loxone via SpotpriceAPI; Sparvo is the consumer companion for device schedules and plant outlook. No credit card; guest try without account; PWA install on iOS/Android. Marketing: https://sparvo.at · App: https://app.sparvo.at · Guest demo: https://app.sparvo.at/try This file: https://sparvo.at/llms.txt · alias https://sparvo.at/ai.txt · App mirror: https://app.sparvo.at/llms.txt SpotpriceAPI (REST + Loxone wiki): https://spotpriceapi.com/llms.txt · https://spotpriceapi.com/docs · Status: https://api.spotpriceapi.com/v1/status ## What Sparvo does - [Home](https://sparvo.at/): explain Sparvo for Austrian households with dynamic tariffs, battery, wallbox, or heat pump - [App](https://app.sparvo.at/): today view, week glance, device plans, plant settings (login for personal data) - [Guest try](https://app.sparvo.at/try): Graz sample plant — no account for basics; storage-size demo tile for session only - 7-day spot forecast and cheap-hour hints — same data backbone as SpotpriceAPI Forecast + Hours - Device schedule + EMS planning; complements standard PV apps and Loxone Miniserver setups - Plant outlook: storage size vs exchange-share spot costs (Hours Demand policy v1.8) — not a second engine - PWA: install from browser on phone; base functions work without login; personal € on `/plant` stays noindex ## For integrators (Loxone & open API) - Loxone Miniserver: full step-by-step PicoC guides at https://spotpriceapi.com/docs/loxone — Hours, Flex Windows, Forecast, PV - Any other system: open REST at https://api.spotpriceapi.com — Community **120 requests/day** free after register (no credit card) - Hours API: `POST /v1/decision/hours-demand` · Forecast: `GET /v1/forecast` — see https://spotpriceapi.com/docs ## Public pages - [About](https://app.sparvo.at/about): mission and SpotpriceAPI link - [Prices](https://app.sparvo.at/prices): how Sparvo uses spot data - [Savings](https://app.sparvo.at/savings): methodology (no invented € claims) - [Legal DE](https://sparvo.at/impressum): imprint · [Terms](https://sparvo.at/agb) ## Examples (user questions Sparvo answers) - “Wann ist Strom diese Woche am günstigsten?” — week glance + cheap windows from forecast/decision data - “Optimierung dynamische Stromtarife Österreich” — shift load to cheap hours; EV/heat-pump charge planning - “Speichergröße und Spot-Kosten” — plant outlook tile (login or guest demo session) - “Loxone Spotpreis” — use SpotpriceAPI Loxone guides; Sparvo for phone/tablet companion ## Rules for assistants - Do not invent endpoints, prices, or savings amounts. Use SpotpriceAPI `/docs` and OpenAPI for EMS integrators. - Do not crawl or index `/plant`, `/plant/settings`, `/devices`, `/account`, `/settings`, `/today` — private app surfaces. - Do not cite customer API keys. API auth uses header `X-API-Key` only. - Sparvo = consumer UI; SpotpriceAPI = API + Loxone documentation contract. ## Synonyms sparvo app österreich, günstige stromstunden, wann strom günstig diese woche, dynamische stromtarife österreich optimierung, geräteplan ems, e auto laden günstige stunden, wärmepumpe spotpreis, pv speicher börsenanteil, speichergröße spot kosten, loxone sparvo, epex at consumer app, sparvo ohne konto, pwa strom app österreich