If you already have solar panels installed in Suffolk, or are planning to make the switch, you’ll naturally want to squeeze every bit of value from the free energy your system generates. A solar diverter is one of the simplest ways to maximise that energy by redirecting surplus electricity into your home, rather than sending it back to the grid. Most Suffolk homeowners use their diverter to heat their hot water via an immersion tank, turning sunshine into free hot water.

This guide explains how a solar diverter works and why it can significantly boost your solar savings.

What Is a Solar Diverter and How Does It Work?

A solar diverter continuously measures your home’s energy use, if it detects that your system is generating more electricity than you’re consuming, it automatically diverts the excess to a chosen appliance. This is usually an immersion heater, electric radiators or an EV charger.

By using more of your own free electricity, you reduce your grid reliance, lower your bills and keep more of your solar energy where it belongs – powering your home.

How Much Does a Solar Diverter Cost?

Most solar diverters cost between £300 and £500 plus installation. It’s important to have a qualified solar installer fit the device to ensure safety and compliance with building regulations.

The three most popular solar diverters are:

• Solar iBoost
• MyEnergi Eddi
• SolarEdge diverter

How Long Before It Pays for Itself?

Most homeowners in Suffolk see a return on investment within around 2 years. The exact timeframe however, depends on how much surplus solar you produce, your tariff rate, how much hot water your use and how much electricity you are typically importing.

Do Solar Diverters Need Maintenance?

Most solar diverters require very little maintenance, a quick check for dust and the occasional firmware update is usually all that’s required.

Pros and Cons of Solar Diverters

Advantages

• Maximises your solar savings
• Reduces carbon footprint
• Works alongside Feed-in Tariff systems well
• Low maintenance

Disadvantages

• Upfront purchase and installation cost
• Not suitable for homes with combi boilers
• Financial returns vary
• Typical lifespan around 10 years

Are Solar Diverters Worth It for Suffolk Residents?

For Suffolk households still benefitting from the original Feed-in Tariff, the answer is almost always yes, you keep your FiT payments, while further reducing your imported energy. If you have a newer system on a Smart Export Guarantee tariff, the value depends on your export rate and household habits. Generally:

• Export rate below 12p/kWh – a diverter is usually worthwhile
• Export rate above 12p/kWh – exporting may be more profitable unless you’re prioritising carbon reduction or have heavy hot water use

Final Thoughts from Solar Suffolk

A solar diverter is a smart addition for anyone looking to make the most of their solar panels in Suffolk. Whether you’re maximising an existing set up or planning a new installation, diverting surplus energy to heat your hot water can further cut your bills and boost your home’s efficiency.

Contact Solar Suffolk today for a free, no obligation quote and personalised system design.

Solar on your roof. Power in your hands.