aFRR (standing for "Automatic Frequency Restoration Reserve") is the secondary Belgian electric reserve. These reserves - 3 in number - are implemented by the TSO, Elia, to balance its power grid.
After FCR, aFRR is used to restore automatically the frequency of the power grid. This service enables Elia to solve small daily imbalances.
Flexcity was the first independent aggregator to propose the electric flexibility of its partners in this service (opened at the end of 2020 for independent aggregators).
Who can participate?
An asset PRODUCING OR CONSUMING ELECTRICITY.
An asset able to MODULATE ITS ELECTRIC POWER BY FOLLOWIING A LINEAR SIGNAL.
An asset able to DAILY MODULATE ITS ELECTRIC POWER.
How does it work?
All assets answering positively to the above mentioned requirements can participate in this service through different ways:
An asset producing electricity will have to increase its production (aFRR UP) and/or decrease its production (aFRR DOWN) within 7,5 minutes while following a linear signal sent each 4 seconds.
- Example of an asset producing less electricity (aFRR DOWN)
An asset consuming electricity will have to increase its consumption (aFRR DOWN) and/or decrease its consumption (aFRR UP) within 7,5 minutes while following a linear signal sent each 4 seconds.
Example of an asset consuming more electricity (aFRR DOWN) -
Flexcity remunerates you for making your flexible power available to the grid (availability remuneration) and the real modulation of this flexible power (activation remuneration).
In 2021, a flexible asset always available could have generated up to 420 000€/MW in aFRR UP and 690 000€/MW in aFRR DOWN of availability remuneration according to market prices.
They participate with us in aFRR
The Oreye site of Beneo Orafti has decided to participate in the new Belgian aFRR market thanks to Flexcity's expertise. While creating a new revenue stream, the participation of this site from the food industry respects the operational process to not disrupt its chore activities.
An efficient partnership between a company from the energy-intensive paper industry and its independent aggregator makes it possible to find out ways to monetize VPK's assets on the energy markets. By making the cogeneration of its Belgian site participate in the aFRR service, VPK Paper has reduced its energy bills.