Describe your home
Location, available roof area, orientation and electricity use form the basis. Unknown values remain visible as assumptions.
Windspirit is an iPhone app in development for planning a home solar system, understanding estimated costs and payback, and keeping track of electricity use.
Explore the conceptConcept for a future app. This website does not include a working solar calculator.

The planned journey connects technical questions to what matters for households: cost, electricity use and a sound decision.
Location, available roof area, orientation and electricity use form the basis. Unknown values remain visible as assumptions.
Consider modules and optional storage as alternatives. Generation, cost and payback estimates should show their dates and sources.
Bills, meter readings or hourly data make up a journal. Overlapping periods must not be counted twice.
The app is intended to compare past consumption with a solar scenario and show a modeled range, not savings already achieved.
Solar production, installed costs and payback depend on location, roof, tariff, quotes and use. Windspirit aims to show inputs and assumptions openly. A qualified professional must check structure, installation and actual quotes.
This view shows the planned information structure. Figures and calculations in the web prototype are demonstrations, not an available product.
Concept view · no live data
Windspirit is in development. We will publish dependable information on availability and features here when it is ready.