Compensation and export
Simplified compensation (RD 244/2019)
In Spain, self-consumption with export under simplified compensation allows the value of the exported surplus to be deducted from the bill, with a cap: it cannot exceed the cost of the energy the client imported from the grid in the same billing period (one month).
How Radiaris applies it:
- It calculates the monthly export income: exported energy × export price.
- It calculates the monthly cost of the imported energy: imported energy × purchase price.
- The income counted each month is the lower of the two.
The result is more prudent savings in months with high production and low consumption (summer), and it avoids counting income that the compensation would not pay.
It is enabled with the Apply simplified compensation (RD 244/2019) checkbox in the Tariff step. If you disable it, all the export is valued at the export price (equivalent to selling on the market).
Check the regulations in force
Simplified compensation has requirements (maximum installation power, same holder, etc.) and the regulations change. Radiaris applies the economic calculation; checking that the client meets the conditions is the designer's responsibility.
Export limit
Maximum power the installation can export to the grid (kW). It is set in the Tariff step; 0 means no limit.
- It only affects installations with export.
- What exceeds the limit is curtailed and recorded as curtailment; it is not paid.
- Typical: installations where the access permit or the contract limit the export.
The limit is applied hour by hour in the balance, before the export income is valued.
Installation without export
This is the extreme case: zero export limit. Any surplus is curtailed (the installation reduces its production). It is chosen in the installation type.
Where to see it
The result of the export and the curtailment appears in the energy balance and in the cash flows.