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Energy solutions

The right inverter makes the rest of the system work properly

The inverter decides what you can run at once, how the system behaves when a motor starts, and whether solar, battery and grid hand over cleanly.

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Sunnovate technicians setting up a Vange inverter and lithium battery

What it does

The component everything else depends on

An inverter converts DC from your panels and battery into the AC your appliances use, and decides moment to moment whether to draw from solar, storage or the grid.

It also does the switching fast enough that nothing in the building notices. When an inverter is wrong for a property, the symptom is rarely subtle: it trips under load, or it never lets the battery charge properly.

Converts and regulates power from array, battery and grid

Switches sources without interrupting what you are running

Protects the battery bank from over-discharge

Reports system state so faults are visible early

Sizing

What actually determines inverter size

Five inputs, considered together. None of them is the price you had in mind.

Peak load

The most you might draw at one moment — everything that could realistically run together.

Appliance load

What each appliance draws continuously, and for how many hours a day.

Surge requirements

Compressors, pumps and motors draw several times their running current at startup.

Property use

A house occupied all day behaves differently from one empty until evening.

Future demand

Adding air conditioning later is far cheaper if the inverter was chosen with it in mind.

System configuration

Battery voltage, array size and single or three phase all constrain the choice.

Single or three phase

Specified against your supply, not assumed.

Hybrid capable

Solar, battery and grid managed by one unit.

Surge headroom

Sized so motor startup does not trip the system.

Battery matched

Voltage and chemistry confirmed before order.

Shop

Energy equipment in the Sunnovate catalogue

Energy equipment is specified and quoted per property rather than sold off the shelf, because the rating has to match your measured load.

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Sunnovate engineers mounting a solar panel on a metal roof

Solar panels

Mono · poly · bifacial

Inverters

Hybrid · pure sine

Batteries

Lithium · tubular

Sunnovate engineer checking a hybrid inverter and lithium battery installation

Complete systems

Specified as one system

System finder

Not sure what rating you need?

The system finder works out inverter capacity from the appliances you select and the backup hours you ask for — including the surge headroom your heaviest motor needs.

Sized from appliances, not guesswork

Accounts for starting current

Confirmed on site before anything is ordered

Find My System → Talk to an Inverter Specialist

Sunnovate system finder

Step 2 of 7 · Appliances

Start with your property type

House Apartment Office Shop Facility

Estimated daily energy

9.9 kWh

Solar array

3 kWp

Inverter

3.5 kW

Storage

10 kWh

Example output for a family home with air conditioning. Your result is calculated from your own answers.

Common questions

What buyers ask us

What size inverter do I need?

It depends on your peak connected load and your heaviest starting load, not on the size of your house. The system finder estimates both from the appliances you select, and a site assessment confirms it.

Why does my inverter trip when the pump starts?

Almost always because it was rated for running current rather than starting current. Motors and compressors draw several times their rated draw for a moment at startup, and an inverter without that headroom shuts down to protect itself.

What is a hybrid inverter?

One unit that manages solar, battery and grid together, deciding which source to draw from and handling the switching. It replaces the separate charge controller and changeover arrangement that older setups used.

Can I keep my existing battery bank?

Often, yes — but the inverter has to match the bank’s voltage and chemistry. Send us your existing setup and we will confirm the match before you order, including if the answer is that it is not compatible.

Do you supply three-phase inverters?

Yes, where the site requires it. Whether you need one is determined by your supply and your equipment, and is confirmed during the assessment.

Protect the infrastructure that powers your property.

The same team that designs your power system installs the cameras, access control and fire detection that protect it — specified together, on one backup path.

Explore Security Solutions →

Next step

Get the right inverter for your system

Send us your load and existing equipment, and we will confirm what fits before you buy.

Find My System → Talk to an Inverter Specialist