Does participating in ancillary services accelerate degradation?

Regulation involves shallow cycles with low DoD. Their impact on degradation is significantly smaller than a full daily cycle — what matters is throughput energy, not the number of activations.

What is the minimum power to enter aFRR?

Formally 1 MW; in practice profitability starts around 5 MW due to certification and market operation costs.

Who handles trading of the services?

Usually an aggregator or the balancing responsible party. Our EMS provides an API interface to the aggregator's system.

Application · ancillary services

Ancillary services and DSR — a second revenue stream from storage

Short answer

A BESS activates full power in under 1 second, meeting aFRR and mFRR requirements. For ancillary services, a sensible minimum scale is 5 MW of power, and a capacity of 2–4 h ensures the offer can be sustained through the full settlement window.

Sub-1-second response time — a parameter unavailable to generating units
Revenue independent of energy prices and trading volume
Stacking with the capacity market and arbitrage on a single asset

Request a quote — pricing in 48 h Sizing guide

The problem: a single revenue source is not enough

A project based purely on arbitrage is exposed to price spread volatility. Stacking services — capacity market, aFRR, mFRR and DSR — stabilizes IRR and smooths seasonality.

How aFRR and mFRR participation works

The unit registers an up and down regulation band. The EMS keeps the SOC within a window that allows full activation in both directions, typically 40–60%. Settlement covers both availability payments and payment for delivered energy.

Sizing parameters

Service → requirements
Service	Activation time	Min. power	Recommended C-rate
Frequency Containment Reserve (FCR)	< 30 s	1 MW	1C
aFRR	< 5 min	1 MW	0.5C
mFRR	< 12.5 min	1 MW	0.25–0.5C
DSR	< 15 min	0.5 MW	0.25C

Cost and payback

Adding regulation functionality does not increase system CAPEX — it only requires a suitable EMS and the certification process. Certification and integration costs are PLN 150,000–400,000 per unit.

FAQ

Request a quote — pricing in 48 h

Send us the project scale in MWh, the site location and the available grid capacity. We reply with a configuration, CAPEX range and delivery schedule.

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