• Save 70% On Average On Your Electricity Bills
  • Accredited Installation Teams
  • Expert Advisors Ready To Help You

Solar inverters = free solar energy

Save money on your energy bills, reduce your carbon footprint, and unlock FREE solar energy with a solar inverter installation from Grant Store.

How much could you save?

How much could you save?

  • Unlock clean, sustainable solar energy
  • Save an average of 70% on your electricity bills
  • Expert advisors and nationwide coverage
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Grant Store’s solar inverter solutions

As experts with decades of experience, we can help you decide which solar inverter would be the most effective one for your solar energy installation.

String inverters

A string of solar panels is a group of panels that are connected in series, and they must be at the same pitch and orientation in order to work efficiently.


Unlike traditional string inverters, microinverters have an inverter for each individual solar panel. This makes microinverters a good option for homes with complex roof geometries or shading issues.

Hybrid solar inverters

A good option for homes with solar battery storage, as they can convert DC electricity into AC electricity for your home’s appliances, and store surplus power in a solar battery or sell it to the grid.

Power inverters

Power inverters pass the DC power from PV solar panels through a string inverter. This makes them a cheaper alternative to micro-inverters and a more affordable way to improve your solar panels’ performance.

Fully Accredited Solar Inverter Installers

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How inverters for solar panels work

  • PV solar panels convert sunlight into direct current (DC) electricity
  • The solar inverter converts the DC electricity from the solar panels into alternating current (AC) electricity
  • The AC electricity is either used to power your home appliances or sold back to the grid
  • The inverter also regulates the flow of electricity from the solar panels, ensuring that it’s safe and reliable

Start saving money today

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  • Save an average of 70% on your electricity bills
  • Expert advisors and nationwide coverage
  • Clean, renewable, carbon-neutral energy

Advantages of adding a solar inverter to your solar setup

Solar panels are pretty useless without a solar inverter to switch the polarity of the electricity that they generate. Devices such as solar-powered lights and water pumps run on DC power, but you couldn’t power your home appliances or sell any excess electricity back to the grid without an inverter. Here are five other advantages to having one:

Save money on your energy bills

An inverter can help you save money on your energy bills by converting the solar energy from your panels into usable electricity

Reduce your carbon footprint

It can also help you reduce your carbon footprint by minimising your reliance on fossil fuels

Increase your home's value

By making it more energy-efficient and environmentally friendly, an inverter can actually increase the value of your home

Decrease your dependency on the grid

Become energy independent by storing excess solar energy for use during times when the grid is down

Improve the reliability of your power suppl

An inverter can improve the reliability of your power supply by providing backup power during power outages

How it works

Grant Store has a long-standing relationship with Growatt, one of the best providers of solar inverter technology, so when it’s time to choose an inverter to add to your solar energy system, you know you’re in good hands with us.

We’ve helped homeowners, business owners, and public authorities across the country install solar inverters and apply for ECO4 grants and more solar grants if they’re eligible. When it comes to getting the most out of your solar panels, trust Grant Store to find the right solar inverter for you.


Tell us about you

We only need a couple of details to establish things like the location, size, and power requirements of your home, business, or public space location to give you a highly competitive quote. If you’re applying for solar panel grants via the ECO4 scheme or Solar Together, we might also need a few more details to determine how much you can claim.


Find the best package

We’ll perform a comprehensive survey of your property to see which solar panel set-up would be most efficient for it.


Book your installation

All our professional installers are fully regulated and accredited, so you know you’ll be getting first-class service every step of the way on your renewable energy journey

Why take our advice?

We’ve already helped thousands of homes, businesses, and local authorities with cost-effective, energy-saving, eco-friendly solar inverter solutions. With over five decades of experience and glowing reviews on Trustpilot, it’s no wonder that Grant Store is the name that people trust for innovative energy solutions.


You must have lots of questions. We’ve answered some of the most commonly-asked questions about solar panel inverters here, but please speak to the team if you have any more.

What does a solar inverter do?

A solar panel inverter converts direct current (DC) electricity from solar panels into alternating current (AC) electricity, which is the type of electricity that is used to power appliances in homes and businesses. It also regulates the flow of electricity from the solar panels, ensuring that it’s safe and reliable. It allows you to power your home appliances and sell any excess electricity back to the grid, provides backup power during power outages, monitors the performance of your solar system, and sends alerts if there are any problems.

What type of solar inverter do I need?

This will depend on three things: The size of your solar system, its location, and your budget. We’re experts in all things solar energy installations, solar inverters, and battery storage, so speak to us before making any decisions, and we’ll make sure you get the best solution for your electricity needs.

What is the difference between a solar inverter and a hybrid solar inverter?

The main difference is that a hybrid solar inverter can store excess solar energy in a battery, whereas a regular solar inverter can’t do this. They are a bit more expensive to buy, but if you want to store energy or even sell it to the grid, then they’re well worth considering. Speak to the team for a free quote on both, and we’ll help you decide which solar inverter would be most financially viable for you.

How do I know what size inverter I need for my solar system?

This depends on the following factors: The size of your solar array, the type of inverter, the location of your solar array, and your budget. As a general rule of thumb, though, the inverter size should be equal to the output of each solar panel in your solar array. If you’re in any doubt about which solar inverter you should get to complement your PV solar panels, then we’ll only be too happy to help, so get in touch on 01942 918 844.