Applications

Ancillary
Services.

Ancillary Services

STABILIZING THE GRID WITH BATTERY STORAGE.

Battery Energy Storage Systems are uniquely suited for ancillary services — responding in milliseconds where conventional power plants take minutes.

Grid operators across Europe increasingly rely on BESS for Frequency Containment Reserve (FCR), automatic Frequency Restoration Reserve (aFRR), manual Frequency Restoration Reserve (mFRR), and synthetic inertia. Volthein delivers fully integrated systems that are pre-qualified, grid-code compliant, and ready to generate revenue from day one.

FCR aFRR mFRR FFR Synthetic Inertia Black Start

<1s

Response Time

Full power delivery within 1 second of frequency deviation — faster than any thermal alternative.

±0.05Hz

FCR Activation Band

Automatic response triggered within the standard ±200 mHz deadband defined by ENTSO-E.

24/7

Continuous Availability

Round-the-clock grid support with automated dispatch — no operator intervention required.

Detailed Functions

WHAT ANCILLARY SERVICES
BESS DOES.

Frequency Regulation

Maintain stable grid frequency through fast injection or absorption of power. Covers FCR, FFR, aFRR and mFRR — all from a single integrated system.

FCRaFRRmFRRFFR

Spinning & Non-Spinning Reserves

Provide immediate or scheduled reserve power, replacing costly thermal standby plants — with no emissions and faster response.

Spinning ReserveNon-Spinning

Voltage & Power Quality

Stabilize voltage levels and correct power factor without additional infrastructure — reactive power compensation on demand.

Reactive PowerPower Factor

Synthetic Inertia

Support grid stability by emulating mechanical inertia through advanced control systems — critical as rotating generation is replaced by inverter-based renewables.

Inertia EmulationGrid Stability

Black Start Capability

Restart grid sections after outages without relying on conventional power plants — autonomous energization of de-energized network segments.

Black StartIsland Operation

Ready to start?

Tell us about your project and grid requirements — we'll propose the right solution.

Get In Touch

Recommended BESS

EXPLORE THE RIGHT SOLUTION
FOR YOUR PROJECT.

Two paths — standardised or fully engineered. Both delivered by Volthein with full lifecycle accountability.

Standardised

S-Line

Deploy Fast.
Operate with Confidence.

Pre-engineered BESS blocks available in three performance levels — ESSENTIAL, STANDARD and PERFORMANCE. Faster time to revenue, CAPEX certainty, and target 99% availability.

Pre-delivery FAT & streamlined commissioning

CAPEX certainty — fixed pricing blocks

Optional warranty up to 15 years

24/7 monitoring & remote support

Explore S-Line

Custom

C-Line

When Standard
Isn't Enough.

Fully engineered BESS for projects with complex site constraints, non-standard interfaces, or specific control requirements. Every element is configurable within a validated framework.

Adapt to real-world site limitations

Single-source accountability

Custom PCS, battery & PPC integration

Full grid connection up to 400 kV

Explore C-Line

Not sure which solution fits? Talk to our team — we'll assess your project requirements and recommend the right path.

Let's Build Together