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Unlock smarter energy and save money for free with EHC and Voltalis

Cut your electricity bills, reduce your CO² footprint and contribute to a stable and sustainable grid.

Voltalis connects millions of devices in residential and commercial properties, all working together to make the cumulative savings drive profound, purposeful change.

Who’s it for and how does it work?

Voltalis is for any home or business that uses electricity for heating or cooling. We supply and install a small, discrete, smart thermostat to each of your appliances for free.

Reduce your electricity consumption by up to 15% with small modulations that reduce peak time electricity demand.

Easy and free to set up with minimal disruption and no cost to you since it is paid for by the electricity network.

Lower CO² footprint for your property and the electricity network due to a higher percentage of renewables in the energy mix.

Real-time connection with your electric heating and cooling appliances and room-by-room control and optimisation with the MyVoltalis app.

Voltalis matches supply and demand.

When an imbalance is detected in the electricity network, Voltalis can briefly reduce the consumption of connected appliances without any impact on your comfort.

Voltalis works silently in the background, or you have the option to take advantage of the Voltalis mobile or web app to control your radiators remotely, monitor their use, or switch the functionality off completely.

You can save money and electricity and play your part to reduce CO2 emissions and restore balance to the energy network.

What do we install in your home?

We supply and install a small, discrete, smart thermostat to each of your electric heating appliances for free. These are connected to each appliance and linked together via a gateway device.

You either let Voltalis work silently in the background, or you have the option to take advantage of the Voltalis mobile and web app to control your radiators remotely, monitor your use, or switch the functionality off completely if desired.

After you book your free installation, a qualified electrician will visit your home to install your smart thermostats. The process takes about 15 minutes per device, is straightforward and clean, and our devices are designed to fit discreetly into your home.

How is Voltalis free?

Voltalis is completely free for users. We cover the cost of your smart thermostats, installation, maintenance, and associated services for every customer.

Why? Because Voltalis is already paid by the electricity network for its contribution to securing stability and security of energy for the future.

During peak consumption periods, when energy production drops or when there is a failure in the network, the electricity network must maintain balance, generally by activating fossil fuel power plants, which are polluting and expensive.

At these times, Voltalis provides the electricity network with flexible load, enabling a reduction in demand rather than increased supply. These small adjustments, when multiplied across millions of connected devices, mean we can avoid the need to use expensive carbon-emitting power plants, reducing our costs and CO2 emissions.

We’re making energy
less demanding.

Since 2006, our technology has been helping consumers and businesses contribute towards the transformation of the global energy sector.

We’re reducing demand on the energy network and the reliance on fossil fuels. Our proven technology has reduced the energy bills of thousands of homes and businesses, and together we’re enabling them to play their part in the transition to a cleaner, greener future.

Frequently asked questions

What is the Voltalis device and how does it work?
Voltalis is a free smart thermostat for homes with electric heating. It connects to your radiators and electric boilers and lets you monitor and control them from your phone, tablet or computer – anytime, anywhere. The device also helps the electricity grid by briefly reducing your heating for a few minutes during peak times. You won’t notice a thing, but it reduces strain on the system and cuts carbon. You save energy, stay comfortable, and support a more sustainable future – all without lifting a finger.
How is the Voltalis device free?
Voltalis is completely free for users. We cover the cost of our smart thermostats, installation, maintenance and associated services for every customer. Why? Because Voltalis is already paid by the electricity network for its contribution to securing stability and security of energy for the future. During peak consumption period, when energy production drops or when there is a failure in the network, the electricity network compensates to maintain its balance, generally by activating fossil fuel power plants, which are polluting and expensive. At these times, Voltalis provides the electricity network with flexible load, enabling the network to reduce demand rather than increase supply, this avoids the need to use expensive carbon emitting power plants, limiting costs and CO2 emissions.
What appliances can the Voltalis device connect to?
Voltalis works with most types of electric heating and cooling appliances, e.g. radiators – including convector, radiant and inertia heaters – as well as electric boilers, heat pumps, HVAC. It does not connect to kitchen appliances, lighting, or other electrical items.
Can I have Voltalis installed if I’m a tenant?
Yes. The installation is classed as a minor improvement and doesn’t affect the structure of the property. It’s also fully reversible if you move out.
Do I need to switch energy supplier?
No. Voltalis works with all suppliers and tariffs, including off-peak/peak or green energy plans. You keep your current deal — we simply help you get more out of it.
Is the installation disruptive?
Not at all. Installation is quick, tidy and handled by qualified professionals. It takes around 15 minutes per appliance. The device blends in discreetly and doesn’t require any major changes or rewiring. One installed, it works by itself. You save electricity without having to interact with it or having to change your lifestyle.

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