What are Voltage Optimisers?

Voltage optimisers reduce excess voltage to match a household’s ideal operating level, saving money in addition to prolonging the lifespan of devices. Here at the leading solar providers in the North East, Sun Spirit, we are proud to offer the industry-leading voltage optimisers of GW Energy Ltd, with models available for both domestic and commercial applications.

How do they work?

Incoming voltage in a UK property tends to be between 240V and 253V. This is somewhat higher than the 220V with which most of the electrical items in your property will be designed to work, resulting in waste. A voltage optimiser addresses this problem by reducing the incoming voltage to match your property’s ideal operating level.

The Benefits of Voltage Optimisers

While voltage optimisers certainly help to reduce your energy costs by as much as 20%, they can also extend your electrical devices’ lifespan due to their reduction of energy oversupply. This, in turn, also helps to save costs and reduce environmental emissions.

The Installation Process

Sun Spirit can supply a qualified electrician to install your voltage optimiser. In the case of the eco-max-home, installation will be between your electricity meter and consumer unit, while the eco-max-commercial is fitted between the electricity meter and distribution board. The installation of your voltage optimiser will be very quick, allowing you to start saving money almost immediately.

Talk to Sun Spirit’s professional and friendly team today to discuss your requirements from a voltage optimiser and to request a competitive quote.

Also suitable for small business premises;

Hotels, Restaurants & Pubs
Savings can be made on kitchen appliances, front of house equipment and accommodation areas
Office & Retail
Savings can be made on equipment such as lighting, heating, ventilation refrigeration and air conditioning
Healthcare & Beauty
Whether Dentist, GP, gyms, spas or hairdressers you can make saving on your energy use

The Equipment

Eco Max Home

Eco-max-home brings immediate savings of up to 20% once installed, and incorporates three adjustable savings settings for optimum voltage control. It is suitable for not only the home, but also small business premises ranging from hotels, restaurants and pubs to offices, retail stores and health and beauty businesses.


As its name implies, eco-max-commercial is our more business-oriented voltage optimiser, suitable for most commercial and light industrial applications with three phase electricity supplies. It can be specified in various off-the-shelf sizes, ranging from 100 Amp to 400 Amp to suit most SME business supply sizes.

Frequently asked questions

If your question is not answered here please contact us for further assistance

How much does Voltage Optimisation cost?

The cost of voltage optimisation will depend on the size of the unit required and the complexity of the installation. You’ll see return on your investment, on average, within 2 years or less.

How much can I expect to save?

Of course each property is different and a full survey of the house would help determine the expected savings but On average customers see between a 12%-15% reduction on annual energy consumption.

Does the unit require any maintenance?

The system has no moving parts, therefore no maintenance is required.

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