Use Case · Utility

Grid Support

Fast, dispatchable utility-scale storage for capacity, frequency response, ramping, and firming — with bankable documentation and sub-second response.

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Problem

Why this matters.

As renewables grow, grid operators face rising variability and capacity constraints. They need assets that respond in sub-second timeframes, stack multiple services on the same fleet, and arrive with type-test documentation and standards compliance — not just raw megawatt-hours.

The utility planner buys against a system curve, not a site curve — evening ramps steepening as solar penetration rises, capacity shortfalls concentrated in a few hundred hours a year, and renewable output that must be firmed before it counts toward reliability. Storage is procured as infrastructure, so documentation, IEC compliance, long-term service, and augmentation planning matter as much as cell chemistry.

Navvion Approach

How we deliver results.

1Define the service mix — capacity, frequency response, ramping, and arbitrage

2Model revenue stacking against your market's rules

3Size the Navvion Gamma container fleet to the committed services

4Coordinate interconnection and protection studies

5Configure SCADA and IEC 61850 telemetry to the operator's dispatch

6Commission, validate response at the point of interconnection, and run Fleet APM

Architecture

How the system fits together.

Containerized battery blocks connect through step-up transformers to the substation bus. SCADA and IEC 61850 telemetry link the fleet to the operator's dispatch, response is validated at the point of interconnection during commissioning, and the plant scales by adding Navvion Gamma containers rather than redesigning the system.

One-line diagram: containerized battery blocks behind step-up transformers on the substation bus, dispatched over SCADA

Simplified one-line diagram. Final architecture is engineered per site.

Products Used

Navvion systems for this solution.

The 5 MWh liquid-cooled Navvion Gamma (ESS-C-20-5015D-L-2H) is the transmission-connected fleet building block; the 3.3 MWh all-in-one Navvion Delta (ESS-C-20-3343A-L1-2H) fits distribution-level, substation-adjacent, and space-constrained sites.

Navvion ESS-C-20-5015D-L-2H liquid-cooled 5 MWh 20-ft container

Utility-ScaleNavvion Gamma

Model · ESS-C-20-5015D-L-2H

Liquid-cooled 5 MWh utility-scale container.

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Navvion ESS-C-20-3343A-L1-2H all-in-one utility-scale 20-ft container

Utility-ScaleNavvion Delta

Model · ESS-C-20-3343A-L1-2H

All-in-one 3343 kWh utility ESS with 215 kW string PCS.

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Services involved

Project development
Engineering and system design
Interconnection support
Commissioning and response validation
Fleet APM
Long-term service and augmentation

Economics

What the payback looks like.

Assumptions

Building block	5 MWh / 0.5P liquid-cooled container
Installed cost	$260 / kWh
Energy shifting	1.5 cycles/day @ $0.06/kWh

Indicative results

Installed cost per container	$1.30M
Energy-shifting revenue	$164,250 / yr
Capacity / ancillary revenue	Contract-specific
Simple payback	Modeled per service mix

Illustrative scenario using the default assumptions from our ROI calculator. We model real savings against your actual tariff and load profile.

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FAQ

Common questions.

Which grid services can the fleet stack?

Capacity, frequency response, ramping, and energy shifting — the mix depends on your market's rules. We model revenue stacking per contract before fixing the fleet size.

How fast does the system respond to a dispatch signal?

The PCS responds in sub-second timeframes at the point of interconnection; end-to-end latency is validated during commissioning against your telemetry requirements.

What documentation supports interconnection?

Certified type-test reports, site one-lines, protection studies, and IEC 61850 point lists — prepared as part of the project-development service.

Which markets and grid codes do you support?

Response curves are configured and validated against your grid code at commissioning, and certified type-test documentation supports interconnection in Navvion's certified markets — the US, Brazil, Chile, Portugal, Spain, Germany, and the UK, with details on request.

How do you plan augmentation over the plant's life?

The plant is laid out with augmentation bays and DC headroom from day one, so capacity is restored or grown by adding containers on the existing design rather than redesigning the system.