Which generator sizes are covered?

The standard range covers approximately 30-300 kVA generators with 30 kW, 50 kW and 100 kW PCS configurations.

What information is needed for sizing?

Provide generator make, model, controller and rating; 7-14 days of load data or a representative schedule; fuel cost and consumption; voltage, frequency and earthing; plus site photos, cable distance and installation space.

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Diesel generator hybrid energy storage

Hybrid Genset Energy System

Name: ECO Hybrid Genset Energy System
Brand: ECO

Quiet power without continuous engine runtime. ECO HES coordinates an existing diesel generator, LFP battery, grid-forming PCS and EMS on one AC bus to cover light loads, support peaks and concentrate engine operation into controlled charging periods.

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ECO hybrid genset energy storage cabinet installed beside a diesel generator — Illustrative hybrid installation. Final layout and equipment configuration are project-specific.

30-100 kWGrid-forming PCS range

≈61-205 kWhLFP battery range

30-300 kVARecommended genset range

50 / 60 HzIEC three-phase configurations

Why hybridize a generator?

Move low-load hours from the engine to the battery.

Traditional generators can spend long periods supplying only a fraction of their rated output. The HES forms the AC bus for lighter demand and requests the generator only when power or battery state of charge requires it.

The objective is operational, not simply electrical: reduce unnecessary engine hours, create quiet operating windows and let the PCS support short power peaks without oversizing the generator for every transient.

Reference pilot targets in the product definition are 40-70% fewer engine hours, 20-40% fuel reduction and a ≤60 dBA battery-mode target at 1 metre. These are evaluation targets and require site validation.

Battery-only supply

The engine stops while the grid-forming PCS supplies light loads and quiet-hour demand.

Controlled charge cycle

The generator starts, synchronizes and charges the battery while serving the site load.

Peak assist

The PCS supports motor starts and variable load spikes that would otherwise stress the genset.

Black start and bypass

Battery black start and a maintenance bypass support recovery and service planning.

Automatic operating sequence

One controller coordinates the full power cycle.

A typical sequence starts with quiet battery supply, brings the generator online when required, charges under controlled conditions and stops the engine after cooldown.

Battery supplies load

PCS forms the AC bus while the generator remains off.

EMS requests start

A power, SOC or schedule threshold triggers the genset.

Generator synchronizes

Controls coordinate connection and protection.

Load + battery charge

The engine serves demand and replenishes stored energy.

Cooldown and stop

The engine shuts down after the target window is met.

Standard IEC range

Three sizes for 30-300 kVA generator fleets.

The HES-50/100 is the balanced launch model for 60-150 kVA fleet retrofits. Final sizing follows measured load, motor starting demand and the required quiet-energy window.

Model	PCS power	Battery	Recommended genset	Cabinet concept
HES-30/60	30 kW	≈61 kWh LFP	30-100 kVA	Single cabinet, approx. 1600 × 1100 × 2200 mm
HES-50/100	50 kW	102.4 kWh LFP	60-150 kVA	Dual compartment, approx. 2200 × 1200 × 2300 mm
HES-100/200	100 kW	≈205 kWh LFP	150-300 kVA	Dual cabinet or 10 ft skid

Reference configuration: 380/400/415 VAC, 3P4W, 50/60 Hz. Final ratings, component brands, dimensions, protection settings and compliance scope are frozen after detailed engineering and testing.

ECO HES-50/100 hybrid generator energy storage cabinet — HES-50/100 concept: 50 kW grid-forming PCS and 102.4 kWh LFP battery.

Hybrid battery system and diesel generator at a remote power site — Battery-supported generator operation for remote, rental and off-grid loads.

Integration scope

Designed for modern and legacy generators.

Standard parallel mode supports synchronized operation. A compatibility transfer mode can reduce integration risk where legacy controls do not support full paralleling, with transfer performance dependent on the selected switching arrangement.

Rental fleets

Construction and temporary power

Cover nights and low-load periods quietly while retaining generator capacity for high demand.

Remote sites

Telecom and utility duty

Reduce engine runtime where service visits, fuel logistics and noise are operational constraints.

Commercial

Cold storage and resorts

Support cycling loads, quiet hours and short peak demand with project-specific sizing.

Microgrids

Generator + renewables

Coordinate stored energy and generator dispatch as part of a broader site power architecture.

Sizing questions

Start with the generator and the load profile.

A 30-day pilot can convert fuel-saving assumptions into measured results before a wider fleet rollout.

Can the HES retrofit an existing diesel generator?

Yes. Final integration depends on the generator controller, synchronization and protection arrangement, voltage, frequency and measured load profile.

How much fuel can the system save?

The brochure uses a 20-40% fuel-reduction target for pilot evaluation. Actual savings must be verified against the site's load curve, fuel consumption, control settings and duty cycle.

What AC configurations are available?

The standard direction is 380/400/415 VAC, three-phase four-wire, at 50 or 60 Hz. Other requirements are reviewed as project configurations.

What should I send for a sizing proposal?

Send the generator brand, model, controller and rating; 7-14 days of load data or a representative schedule; fuel cost and consumption; site voltage, frequency and earthing; and photos showing cable distance and available installation space.

Request a hybrid sizing review

Send the load curve before choosing the battery.

We will match the PCS, energy capacity, control interface and cabinet arrangement to the generator fleet and operating objective.

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