Reliable Backup Generators for Off-Grid Power Systems

A correctly integrated backup generator keeps an off-grid power system operating through extended poor weather, higher-than-expected loads and periods of reduced solar generation.

MyEnergy designs complete off-grid systems with automatic generator backup, giving homes, farms and remote operations reliable power throughout the year.

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Services / Off-Grid Power

Generator backup.
Part of the complete system.

Generator supply and integration for off-grid solar and battery systems, sized and configured around the way your property uses power.

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MyEnergy generator integration installation
MyEnergy Engineering / Generator integration
What MyEnergy provides

Backup that works
with solar and storage.

Solar and batteries can supply much of an off-grid site’s energy, while the generator supports prolonged low-solar periods or unusually high demand. MyEnergy selects and integrates generators with the inverter, charging equipment and controls so the components operate together.

The details that make integration work.

01

Correct sizing

Assess site loads, motor starts, inverter capacity and battery charging limits so the generator can support the required duty.

02

Automatic control

Configure compatible start and stop controls, warm-up, cooldown and charging conditions for the agreed operating strategy.

03

Practical installation

Consider noise, weather protection, fuel arrangements, access, communications and local servicing.

A practical approach

Automatic support.
Configured for your equipment.

A compatible generator can start when the battery reaches a programmed level or when site demand requires support. After warm-up it can supply loads and charge storage, then complete its cooldown and stop when conditions allow. Manual controls remain available for testing and servicing.

From assessment to delivery

A practical path
through the project.

MyEnergy has designed and delivered power systems since 2010. Our team connects the design, equipment and installation with long-term operation.

Off-grid powerDiesel replacementService & maintenance
01

Assess your requirements

Review the property, current equipment and what the system needs to achieve.

02

Develop the scope

Explain the suitable configuration and the installation or integration work required.

03

Install & commission

Complete the agreed work, test operation and explain how to use and support the system.

Common questions

Before you
get started.

Can you connect an existing generator?

We review its output, condition, start controls and suitability for the inverter system before confirming integration.

What size generator will I need?

Sizing considers the loads it must supply and the batteries it must charge at the same time, including motor starting requirements and the generator’s operating range.

How often will it run?

Runtime depends on solar conditions, energy use, battery capacity and control settings. We assess the expected operating role during system design.

Make the system work together

Make backup part of the power plan.

A generator needs to work with the loads, inverter, batteries and controls. Share the existing equipment details so we can assess the integration properly.

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Automatic Generator Starting

MyEnergy can configure the off-grid inverter system to automatically control a compatible generator.

The generator can be programmed to start based on:

  • Battery state of charge
  • Battery voltage
  • High site loads
  • Time-of-day conditions
  • Inverter overload or power demand
  • Scheduled battery charging

Once started, the system allows the generator to warm up before accepting load. It can then power the property while recharging the battery bank. After the required battery level is reached, the generator completes its cooldown period and shuts down automatically.

Manual controls remain available when the generator is needed for servicing, testing or additional site power.

Correct Generator Sizing Matters

An undersized generator may struggle to supply the property and charge the batteries at the same time. An oversized generator can spend long periods running under light load, increasing fuel consumption and creating potential maintenance issues.

We size the generator around:

  • Inverter and battery-charger capacity
  • Normal and peak site loads
  • Motor and pump starting requirements
  • Battery charging limits
  • Generator operating range
  • Available fuel and local servicing
  • Expected generator run time

The result is a generator that works properly with the wider off-grid power system rather than being treated as a separate piece of equipment.

Generator and Inverter Integration

Successful generator backup depends on more than connecting an AC supply to the inverter.

MyEnergy configures the inverter, battery and generator controls so the complete system operates together. This can include:

  • Two-wire automatic start and stop control
  • Generator input-current limits
  • Battery charging limits
  • Warm-up and cooldown timing
  • Voltage and frequency acceptance settings
  • Load management
  • Generator fault monitoring
  • Remote alerts and system monitoring

Where required, non-essential loads can be temporarily limited while the generator is charging the batteries or supplying higher-priority equipment.

Choosing a Generator for an Off-Grid System

Diesel generators are commonly used for remote and higher-demand off-grid systems because they are suited to longer operating periods and can be supplied in low-speed, liquid-cooled configurations.

The right generator will depend on the application. A remote home with occasional backup requirements has very different needs from a dairy, pumping site, workshop or commercial facility.

We consider the generator’s operating duty, fuel storage, noise, weather protection, starting capacity and access to local parts and servicing before recommending a suitable option.

Built for Remote Reliability

MyEnergy has been designing and installing off-grid power systems since 2010. Our team handles the solar, battery, inverter, generator controls and system commissioning as one complete project.

This provides clear responsibility for how the equipment is selected, programmed and supported throughout the life of the system.

Off-Grid Generator FAQs

Does every off-grid solar system need a generator?

For most permanent off-grid homes and commercial sites, generator backup is strongly recommended. It protects the battery and provides power during extended poor weather, unexpected consumption or equipment maintenance.

Can an off-grid generator start automatically?

Yes. A compatible generator can be started and stopped automatically by the inverter system using two-wire control. The starting conditions are programmed around battery level, site loads and operating requirements.

What size generator is required for an off-grid system?

Generator size depends on the inverter capacity, battery charging rate, peak loads and motor-starting requirements. It should be calculated as part of the complete system design rather than selected only from the property’s average consumption.

Can an existing generator be connected?

Sometimes. The generator must have suitable voltage and frequency performance, enough capacity and compatible starting controls. MyEnergy can assess an existing unit before including it in the system design.

How often will the generator run?

Run time depends on the available solar, battery capacity, seasonal weather and site consumption. A well-sized system should primarily use solar and battery power, with the generator operating when additional backup is genuinely required.

Design a Complete Off-Grid Power System

A backup generator should operate as part of the off-grid system—not as an emergency afterthought.

Talk to MyEnergy about a properly sized solar, battery and generator system designed around your property, operating loads and location.