Go clean and save
Helping the planet doesn't have to cost the earth. Compare tariffs and switch, confident in our Big Clean Switch Guarantee.

By clicking on the button above, you agree to Big Clean Switch's terms and conditions and to us getting in touch using the details you provide in order to help you switch to clean energy. For more info, see our privacy policy.

“We saved £255. I wasn't expecting it to be so much. It's such a nice feeling to know you're helping the environment and saving money at the same time.”
- Clare -

What is clean electricity?

By ‘clean electricity’ we mean power generated from renewable sources – sun, wind, water (rivers, tides or wave power) and biofuels (such as gas released by rotting food waste). Unlike electricity generated by burning fossil fuels (oil, coal and gas), clean energy has little impact in terms of climate change and air pollution. No tariffs available through our site source electricity from nuclear power. Click here to find out more.
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How do clean tariffs work?

Picture the National Grid like a bucket full of water.* When you’re on a clean electricity tariff, your supplier promises to match the amount you take out of the bucket by ensuring the same amount of clean water goes in. The more clean water that goes into the bucket (and the less dirty water), the cleaner the bucket (or the Grid) gets.
* In reality of course, water and electricity shouldn’t mix!
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We vet our suppliers so you don't have to

We want to help as many people as possible switch to clean energy. We have strict criteria that governs which suppliers we work with. If you’ve a thirst for detail, you can find out more here.

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Our energy suppliers

A supplier with ethics at its heart, championing social equality, local renewables and stronger communities.

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New kids on the block who have arrived with a bang. Low cost and ranked number one energy company for customer service on Trust Pilot.

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The first major British supplier to be co-operatively owned, Co-op Energy give a share of their profits back to members and local communities.

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One of Britain’s original green energy companies. They supply green energy to around 200,000 people in Britain from their fleet of wind and sun parks.

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The UK's local clean supplier. On average, customers are never more than four miles from one of their generation sites.

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iSupplyEnergy is owned by Vattenfall, one of Europe's largest retailers of electricity and gas and a big investor in UK renewable energy.

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Clean electricity from one of the UK's largest investors in solar power, with a commitment to 'simpler pricing and bills that actually make sense'.

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The 2018 MoneyFacts Energy Provider of Year, So Energy have a commitment to low prices and great service.

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Get to know... Bristol Energy

  • Wind 48%
  • Solar 8%
  • Hydro 6%
  • Biofuels 38%

Bristol Energy helps you go green and give back. You’ll get one of the cheapest 100% green deals on the market. And Bristol Energy will reinvest its profits back into local communities. Bristol Energy is publicly owned. With no private shareholders to keep happy, it keeps its prices low and puts fairness before profit. There are no exit fees. And a Bristol-based customer care team. You can even visit us in person at our Hub if you’re local. About Bristol Energy:

  • Affordable, 100% renewable electricity, sourced from independent generators across the UK
  • Simple, fair and transparent prices, with no exit fees
  • One of the first energy suppliers to voluntarily offer the Warm Home Discount to support their more vulnerable customers. Only available to customers in the Core Group. Find out more here: here
  • Monthly meter readings, so you only pay for what you use
  • They aim to keep their prices as low as they can. If they make a saving on the energy they buy, they pass that on to their customers
  • They’re owned by Bristol City Council, so the money you pay for your energy will help local communities
  • A national supplier, owned by Bristol City Council
  • A force for social good: Bristol Energy’s profits will be reinvested back into local communities. So you can use your energy to make a positive difference
    Note: Bristol Energy’s ‘My Green Plus’ gives you 100% renewable electricity. Bristol Energy’s other tariffs are not 100% renewable, but renewable energy makes up 40% of its overall fuel mix.

Accolades

Get to know... Bulb

Electricity fuel sources April 16 - March 17 projections

  • Wind 50%
  • Solar 40%
  • Hydro 9%
  • Biofuels 1%

Bulb is one of the most trusted suppliers in the UK, with an incredible TrustPilot score, consistently over 9.5. 

Bulb are independent, which allows them to keep prices low and give members exceptional service.

They believe energy should be low cost and easy to manage. That means a simple rate at prices up to 20% lower than the Big Six, no exit fees and dedicated support.

About Bulb:

  • Affordable, renewable energy:
    100% Renewable Electricity and 10% Renewable Gas sourced from independent UK generators.
  • Exceptional service: Easy online management, plus a UK-based account manager trained in all aspects of energy.
  • Fair & simple prices: A simple rate, no 12-month contracts and no exit charges.
  • First B-corp certified supplier: Thanks to Bulb’s social and environmental performance, accountability and performance standards

Accolades

Get to know... Co-op Energy

Where Co-op Energy source their 100% renewable community electricity (may vary with fluctuation of generation within their community energy portfolio)

  • Wind 11%
  • Solar 45%
  • Hydro 1%
  • Biofuels 43%

An energy supplier with community at its heart.

With co-operative values at their core, they’re not motivated by money or profits, but by being a responsible, ethical business that can make a positive impact on climate change. Better still, they’re a significant supporter of community energy in the UK – and their community tariff is the first we know of that matches the electricity you use with energy sourced from community projects.

Co-op Energy was also the first big-name supplier to start rolling customers onto a new fixed price tariff when their existing fixed rate comes to an end (rather than allowing them to drop onto an expensive variable rate deal), leading the industry into protecting customer’s prices.

Here’s what makes them different:

  • Owned by their members
  • Warm Home Discount and ECO Schemes available
  • Friendly UK-based call centre

Accolades

Get to know... Ecotricity

Published Fuel Mix for 2016-2017

  • Wind 99%
  • Hydro 1%

Ecotricity have award winning customer service and operate an ethical pricing policy, so everyone gets the same price, no matter how they pay or when they joined – with no exit fees or penalties.

  • One of the UK’s original clean suppliers
  • Committed to changing the way energy is generated and used in Britain
  • All profits go into their mission 
  • Built and run a national network of electric vehicle charging points

 

Accolades

Get to know... Good Energy

Published Fuel Mix for 2016-2017

  • Wind 57%
  • Solar 18%
  • Hydro 5%
  • Biofuels 20%

Good Energy is a clean energy pioneer which has been selling renewable power to UK households since 1999. They:

  • Source 100% of their electricity from renewables
  • Supply Green Gas, 6 percent of which is sourced from bio-methane
  • Run their own solar and wind sites, as well as investing in clean energy innovations such as the proposed Swansea tidal lagoon
  • Support over 112,000 homes and businesses generating their own energy through wind and solar

In addition, they were named ‘best green electricity supplier’ and one of the UK’s most ethical companies of the last 25 years by Ethical Consumer Magazine. They were awarded Ethical Accreditation with a score of 100% by the Ethical Company Organisation for 12 years running and were named one of the world’s most ethical companies by the Good Shopping Guide. All of this is wrapped up in great service from their South West team, which is consistently highly rated by their customers, Which? and Martin Lewis’ MoneySavingExpert.

You can find out more about them in their 2016 Progress Report.

Partners

Get to know... iSupplyEnergy

Where iSupply sources its renewable electricity from (2017/18 projection)

  • Wind 100%

Thousands of new customers every month trust iSupplyEnergy to look after their energy. They focus on simplicity, fair prices and excellent customer service.

iSupply Energy is owned by Vattenfall, one of Europe’s biggest retailers of electricity and gas, with over nine million customers. They’ve invested over £3bn in UK renewables since 2008. Offering 100% renewable electricity is part of their ambition to be fossil free within one generation, and to help their customers power their lives in ever climate smarter ways. 

Here’s what makes them different:

  • They offer 100% renewable electricity
  • Fair and simple prices
  • A friendly, UK-based team
  • Online account management available 24/7 to allow you to provide meter readings, make payments and view statements

Get to know... Octopus

Where Octopus gets its clean electricity

  • Wind 18%
  • Solar 32%
  • Hydro 1%
  • Biofuels 49%

Since 2011, Octopus has built more than 150 solar plants in the UK, making it one of the country’s largest solar investors. In fact, the solar farms they’ve funded generate enough electricity to power 250,000 homes (assuming the sun’s shining!). About Octopus:

  • Their Super Green Octopus Tariff offers 100% renewable electricity, together with full carbon offsets for gas.
  • They don’t charge exit fees to customers who want to leave and aim to offer clear, competitive pricing.
  • In addition to their investment in solar, they’ve also helped fund wind and anaerobic digestion plants (using the natural breakdown of organic waste to generate power).
  • They supply 100% renewable electricity to all of Arsenal Football Club’s facilities.

Accolades

Get to know... So Energy

Where So Energy source their renewable electricity

  • Wind 45%
  • Solar 29%
  • Hydro 19%
  • Biofuels 7%

So Energy are restoring trust in the energy industry by providing great value renewable electricity and focussing on giving outstanding service to their customers. 

Here’s what makes them different:

  • Moneyfacts 2018 Energy Provider of the Year
  • A ‘Low Price Commitment’ to keep their one fixed tariff within the cheapest 10% of all tariffs available
  • The only energy supplier to let customers vote where they source their renewable electricity from
  • Great customer service which has earned a 5-star Trustpilot rating
  • A Living Wage employer

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By clicking on the button above, you agree to our terms and conditions and to Big Clean Switch getting in touch using the details you provide in order to help you switch to clean energy. For more info, see our privacy policy.