Read the PV production forecast
See how much electricity the planned PV system is expected to generate over the year — and what drives that number — before you look at how the energy is used or what it's worth.
The Production PV view in the Simulation tab shows the system's expected generation: the annual yield and how it's spread across the year. It's the generation side of the simulation — the Energy flows view then splits that generation between the household, battery, and grid, and Profitability turns it into euros.
Before you start
- The variant needs a planned PV system with a yield calculation (2D or 3D planning). A Quick planning variant runs no yield calculation, so there's nothing to forecast — switch it to 2D or 3D planning to get a forecast.
- Production reflects the planned layout — module count, orientation, and tilt (2D or 3D), plus shading (3D only) — all flow into the yield. If the number looks wrong, check the layout first.
What drives the forecast
Reonic models generation from:
- Local weather — based on the project address, so the forecast reflects the conditions at the site.
- Orientation and tilt of each roof surface, taken from the plan.
- Shading captured in the 3D layout.
- Module specifications — rated power, temperature behaviour, and degradation from the component data.
Things to know
- Set a realistic degradation value. Enter each module's annual degradation on the component so the long-term yield, and the payback that depends on it, reflects how panels lose a small amount of output each year. Real panels lose roughly half a percent per year.
- Shading only counts if it's in the layout. A nearby tree or chimney affects yield only if it's modelled in 3D. If you expect a lower summer yield from shading and the forecast doesn't show it, add the shading object to the layout.
- It's a forecast, not a guarantee — weather years vary. The figure is a weather-normalised expectation.
Last updated on
Related articles
Plan PV modules in the 3D editorDraw the roof, place modules, wire strings, simulate shading, and capture the views the customer PDF will render. The full PV planning flow inside the Plan3D editor.Read the energy flows simulationSee where the energy on a project moves: what the PV array produces, how much the household consumes directly, how much charges the battery, and how much flows to or from the grid.Read and tune the profitability simulationUnderstand what the Profitability tab shows, set the tariffs and consumption inputs that drive it, and tune the levers (feed-in tariff, electricity price, escalation, subsidies, battery, wallbox, heat pump) so the payback the customer sees is honest and defensible.