Scope and limits
Radiaris specialises in PV self-consumption with fixed modules on roofs or mounting structures. Knowing what it covers and what it does not saves you nasty surprises.
What it covers
- Grid-connected installations: with export, without export and with a battery.
- Off-grid installations (no grid) with a battery.
- Flat roofs, pitched roofs and combinations of several planes; modules flush with the roof or raised on a structure.
- Shading from objects, neighbouring buildings, between planes, between rows and from the far horizon.
- Monofacial and bifacial modules, with or without power optimizers.
- One or several inverters, with shared or independent MPPT inputs.
- Fixed, indexed and PVPC 2.0TD tariffs, with the simplified compensation of RD 244/2019 for Spain.
- Special loads: electric vehicle and heat pump.
What it does not cover (yet)
| Topic | Situation |
|---|---|
| Solar trackers (1 and 2 axes) | Not included: modules are fixed |
| Concentrating systems | Not included |
| Solar pumping | Not included |
| Direct current grids | Not included |
| Sub-hourly weather data | The engine works in hourly steps |
| Price-driven battery strategies (TOU) | Pending; today: self-consumption and backup |
| Subsidies and tax deductions in the economics | Informative only in the offer |
| Different consumption on weekdays and holidays | Only with your own curve |
| Experimental validation with measured production | In progress; see Validation |
| Tariffs and compensation outside Spain | The engine accepts free prices, but the simplified compensation is the Spanish one |
Geographic coverage
The engine works anywhere in the world with data from PVGIS, NASA POWER or your own file. There are two Spain-specific features: building outlines from the Cadastre (it does not cover the Basque Country or Navarre) and the simplified compensation of RD 244/2019. The cabling regulations used are the Spanish REBT.
When not to trust it blindly
- Very complex shading: the fast model is an approximation validated against the full I-V circuit, not against measurements.
- Anomalous years: the simulation uses a typical year; a real year can deviate. Look at the uncertainty.
- Equipment prices and costs: the default values are indicative. Replace them with your supplier's before presenting an offer.
Is something missing or wrong? Write to us at hola@radiaris.com. Last reviewed: 26 October 2026.