Off-Grid Solar & Battery Kits & Components

✓Designed by Victron-trained off-grid specialists

Go Fully Off-Grid
Without Guesswork

Solar, battery and inverter systems designed, pre-built and programmed around
what you need to power.

✓Reduce generator runtime and fuel use

✓Power properties and sites with no grid connection

✓Pre-built and pre-programmed to simplify installation

✓Engineer support from sizing through to installation

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Use the quick sizing tool, or speak to an engineer about a bespoke system.

Shop complete systems

Popular off-grid solar & battery systems

Choose a proven pre-configured kit, or use the recommendation tool above if you want us to narrow down the right inverter, battery and solar capacity first.

View All Off-Grid Kits Talk To An Engineer

Not sure which route is right?

Use the quick recommendation tool, or let an engineer design it with you.

Off-grid systems depend on your peak loads, daily energy use, battery autonomy, available solar and whether you need generator backup. We can help you work through those choices before you commit.

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Why Callidus?

Off-grid systems designed, built and supported by specialists.

The existing page already has the right proposition: design, build, supply and installation. This presents those strengths more clearly at the point customers are deciding who to trust.

1

Expert system design

Our team sizes off-grid systems around the loads, usage and practical constraints of the project.

2

Pre-built & programmed

Systems can be prepared in-house before dispatch to simplify installation and reduce setup errors on site.

3

Quality components

Build around established solar, inverter and battery equipment, including Victron-based system designs.

4

Supply or installation

Choose a supply-only route or discuss installation where you want the Callidus team to take the project further.

Built for real off-grid use

Reliable energy for sites where mains power is difficult, expensive or unavailable.

Off-grid homes

Standalone solar and battery systems for properties that need dependable everyday power without a normal grid connection.

Cabins & glamping

Power accommodation, lighting, refrigeration, pumps and other loads at remote cabins, lodges and glamping sites.

Farms & workshops

Support tools, equipment and buildings where bringing in a traditional mains supply is impractical or costly.

Generator-backed sites

Use solar and battery storage for routine demand while retaining generator charging for periods when extra energy is required.

Customer proof

See what Pete Goss MBE says about his Callidus off-grid system.

4.8/5Google rating

5/5Judge.me rating

5000+Happy customers

Recent Off-Grid Projects

A look at Callidus systems and customer installations.

How it works

From your requirements to a system ready for site.

Use the recommendation tool for a quick starting point, or send the project details through the quote form for a more bespoke design route.

1

Tell us the loads

Share what you need to power, how you currently get energy and whether you want supply only or installation.

2

Size the system

The inverter, battery and solar capacity are selected around the project requirements and expected usage.

3

Build & programme

Where chosen, the system is pre-built and programmed in-house before it leaves Callidus.

4

Supply or install

Your system is delivered for your installation route, or the project can move forward with installation support.

Questions before you commit?

Off-grid system FAQs

How do you decide what size off-grid system I need?

Peak loads help determine inverter size, while daily energy use and the autonomy you want influence battery capacity. Solar capacity then needs to be considered alongside the site and expected charging conditions.

Can an off-grid system work with a generator?

Generator charging can form part of an off-grid design. It is especially useful where the site needs another charging source when solar generation is limited or demand is unusually high.

Can I choose supply only instead of installation?

Yes. The current enquiry flow supports both supply-only and installation-required routes, so tell us which option fits your project.

Can you pre-build and programme the system?

Yes. Pre-building and programming is part of the Callidus off-grid proposition and can reduce setup work and avoid unnecessary configuration errors on site.

What if I do not know enough to choose a kit?

Use the recommendation tool above for a quick starting point, or complete the free quote form below and give us the loads, existing equipment and project details you do know.

Ready to find the right off-grid system?

Get a quick system recommendation online, or tell our engineering team about the project for a tailored quote.

Get My System Recommendation Get Your FREE Quote

Start Your Off-Grid Journey – Free Quote

Experience energy independence. Our tailored off-grid systems maximise energy efficiency, reduce costs, and minimise environmental impact. Our in house engineering team delivers bespoke solutions. We handle design, specification, and system optimisation to meet your specific needs, regardless of size, weight, environmental, or regulatory constraints.