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Green energy

Save the planet with green energy tariffs

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  • Search tariffs from dozens of providers
  • Take control of your energy bills
  • Call 0800 177 7019 to find out more

Compare energy tariffs from a wide range of suppliers

Make the best choice from dozens of energy suppliers we work with, including all the big brands, and take control of your energy bills. 

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What is green energy?

Green energy is electricity which is generated by natural, renewable sources such as the wind, the sun
or the power of the tides – as opposed to using fossil fuels like coal or oil.

  • earth icon

    Environmentally friendly

    Green energy is called ‘renewable’ for a
    reason – it comes from sources that don’t
    run out and which don’t produce emissions
    that cause climate change

  • energy icon

    Competitively priced

    Because more people want green energy and
    because the technology is always improving,
    green energy is cheaper than ever
    – so it doesn’t cost the earth

  • house energy icon

    More popular than ever

    The UK generates more green energy every
    year. In 2020, the country went months
    without burning coal, and even more
    renewable sources are coming on stream

Compare green energy suppliers

Do your bit for the planet simply by opting for green energy. You can buy your gas and electricity from a specialist green energy company, or you can ask your current supplier to increase the amount of energy from green sources your household uses. 

Green energy suppliers include the likes of Green Star Energy, Ecotricity, Bulb and Octopus. These companies encourage app-based account management and may offer paperless billing by default. Some green suppliers produce 100% of their electricity from zero-carbon sources.

Mainstream suppliers also offer green energy tariffs, which guarantee that some, most or even all of your energy comes from ecologically-friendly source. You can check how much renewable energy a supplier produces by looking at its ‘fuel mix’ information. This shows how much of the power they sell has come from coal, gas, nuclear, renewable and other sources, so you can see how green they really are.

Green energy illustration

How is green energy generated?

Green energy is a catch-all term for energy generated from eco-friendly sources. There are quite a few renewable
sources, but they all work in the same way in the end: by turning turbines to generate electricity as they rotate.
Common sources of green energy include:

  • wind energy icon

    Wind power

    Large windmills attached to turbines are placed in windy areas to generate electricity as they turn

  • wave icon

    Tidal power

    The moon’s gravitational pull is incredibly strong, and power is generated as the tides change

  • solar icon

    Solar power

    Special photovoltaic panels are set up in hotter places, and turn the sun’s energy into electricity

  • leaf icon


    Burning biological material such as plant matter and waste food as a fuel source is efficient, though it does generate emissions

  • hyrdo power icon

    Hydroelectric power

    Dams built over large rivers can be used to control the flow of water, directing it through generators with gravity

  • Geothermal

    Captured heat coming up from deep within the earth can generate electricity by heating water into steam to drive turbines

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Green – or renewable – energy is any energy generated from natural sources. In practice, this means anything that isn’t a burning a fossil fuel like coal, oil and gas.

However, not every renewable source is carbon-neutral. Burning biofuels still puts out emissions, though these tend to be cleaner in comparison to fossil fuels.

Green energy is often known as renewable because it is generated without using finite resources. Whether your renewable energy is generated from the wind, the tides or the heat of the sun, it’s much more abundant than fossil fuel, of which there is a finite supply.

While nuclear energy is a low-carbon source of energy because it has an extremely limited impact on climate change, it is not considered ‘green’ or ‘renewable’.

Nuclear power is still generated with fuel, commonly uranium or plutonium, that exists in finite amounts on Earth. It also leaves behind very dangerous waste which can be lethal for thousands of years, and which is very expensive to deal with. That said, it’s much less bad for the environment than coal or oil.

Green energy tariffs are now extremely competitive as the technology improves and more people start asking for renewable energy. This will only continue, especially as solar panels fall in price and increase in efficiency.

Of course, fossil fuel prices fluctuate too, so it’s hard to say which fuel source is the absolute cheapest. What’s clear these days, though, is that you won’t be paying through the nose to go green.

Switching energy suppliers has never been simpler thanks to the Energy Switch Guarantee, which automates the process for customer and allows you to move provider within 21 days with no interruption to service.

There are hundreds of tariffs available on the market today, and MoneySuperMarket’s energy price comparison service can help you find the supplier and tariff that are right for you.

We help you compare prices from all the energy suppliers in the UK, so you can find the right deal for your needs

It only takes a few minutes to compare.  All you have to do is answer some simple questions, and we'll show you tariffs and offers from all the energy companies. 

We can help you switch to tariffs from most companies directly through MoneySuperMarket.  Just click the green button, answer a few more questions, and you’re done.

If you’d prefer to talk to someone, you can call us on 0800 177 7087. We can answer any questions you might have, and even switch you to a new deal over the phone.

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