Solar compatible devices that make better use of excess energy.

What happens to excess solar?

When your solar PV system is generating more electricity than the home is using, that surplus energy can be exported back to the grid. Export payments can be useful, but many households get more value by using as much of their own solar energy as possible.

Solar compatible devices help redirect spare generation into useful jobs around the home — such as heating hot water, warming floor areas, charging batteries or supporting low-carbon heating.

myenergi eddi and solar diverters

The myenergi eddi is an eco-smart solar power diverter. It monitors when your solar PV system is generating more electricity than the house is using, then redirects that spare energy to suitable heating loads instead of immediately exporting it to the grid.

Other suitable loads can include storage heaters, electric towel rails, panel heaters, underfloor heating mats or heat pads, provided they are designed and protected correctly.

This can be especially useful in homes with a hot water tank, because excess daytime solar can help produce hot water without relying as much on grid electricity or other heating sources.

Heating hot water tanks with spare solar

A solar diverter can send variable amounts of spare solar to an immersion heater. Rather than turning on at full power and importing from the grid, the diverter adjusts output to match what your panels are producing at the time.

For the right property, this can be a simple, practical way to use excess solar generation and reduce wasted export.

Underfloor heat pads and electric heating loads

Some homes may also use surplus solar with compatible electric underfloor heat pads or local electric heating loads. This needs designing properly so the controls, cable routes, electrical protection and heating load are suitable.

E-Fix can advise whether this type of setup makes sense for your property, your roof generation and your daily energy use.

Sunamp Thermino heat batteries

A Sunamp Thermino is a compact thermal battery for domestic hot water. Instead of storing a large cylinder of hot water, it stores heat in a phase-change material and releases it to produce hot water on demand.

For homes with solar panels, a Thermino-style heat battery may help turn spare generation or cheaper off-peak electricity into useful hot water. It can be considered alongside solar diverters, battery storage and EV charging as part of a whole-home energy plan.

E-Fix can advise on the electrical side, controls and whether a heat battery makes sense for the property before any kit is specified.

Choosing the right setup

The best option depends on your roof, solar array size, hot water system, heating setup, battery storage, EV charger and how your household uses energy through the day.

E-Fix Electrical can look at the complete picture and recommend practical, tidy solutions that work safely with your existing electrics.