Compare 100Green Energy Prices

As of September 2025, 100Green's Sparkling tariff charges about 25.5p for each kWh of electricity. There is a daily standing charge of nearly 45p for this. If you go for the Tap dual fuel tariff, you get gas at about 6.4p for every kWh. The daily standing charge for gas is around 29p. These prices use a typical household as a guide. A home using about 2,700 kWh of electricity and 11,500 kWh of gas each year helps set these figures. The price you pay could be more or less than this. It depends on your postcode, the type of meter you have, and how much energy you use during the year. The final energy price is also capped. Ofgem's energy price cap can change every three months. It updates in January, April, July, and October.

No. A big reason to pick 100Green is that every plan has £0 exit fees. You can change to another supplier or switch to a better deal at any time. There are no penalties for leaving. If you want price certainty but do not want to get stuck in a long contract, 100Green can be a good choice for you.

No. Like other UK suppliers, 100Green has to follow Ofgem’s energy price cap. This rule puts a limit on how much suppliers can charge for each unit of electricity or gas, and for the daily standing charge. The price cap is set for typical homes. In the energy market, if wholesale prices go up or down, 100Green’s variable tariffs will also change, but stay with Ofgem’s cap each quarter. So, you can feel sure you will not pay over the set limit for what you use. The price cap helps make sure your energy price and standing charge follow UK rules.

The standing charge is a fixed fee that you pay each day to have energy in your home. You pay this charge no matter how much gas or electricity you use. With 100Green in September 2025, the standing charge is about 45p per day for electricity and about 29p per day for gas. The standing charge helps pay for keeping the network running, making sure your home stays connected, and helping customers. You cannot get rid of the standing charge, but you can compare what different energy suppliers offer. This can help you find ways to save money on your total bill.

Yes. 100Green is the only supplier in the UK to offer 100% renewable gas as standard. The gas is made from biomethane. It comes from food waste and farm waste. This is done by using anaerobic digestion. This process takes natural gases from things breaking down, so the gas comes from renewable sources. That gas gets put into the national grid.

Every unit of gas is backed by the Renewable Gas Guarantee of Origin. The scheme shows that the gas is truly made from renewable sources and not fossil fuels.

When you switch to 100Green, you can cut down your carbon footprint. This will help protect natural habitats from harm caused by taking fossil fuels out of the ground.

Even though 100Green is known as a green energy supplier, people with 100Green can still get help from government support like the Warm Home Discount and Cold Weather Payments. The Warm Home Discount lets you take £150 off your energy bills in winter if you meet the rules for it. The Cold Weather Payments come to you when the average temperature is below zero for seven days in a row. 100Green works to make sure all households who need extra help are not missed out on these programs, so they can handle their energy bills during the cold winter months.

Customer reviews say 100Green is a good green energy supplier. A lot of people like that it uses clean and renewable energy. The simple, fair tariff options are easy to understand. Customers feel good about 100Green, because it is a true green energy company. It does not just use certificates like bigger brands sometimes do. Many say they get peace of mind from this.

Many customers also enjoy talking to real people on the phone. It is better than using automated systems. They say the call queues are shorter than with the big suppliers.

On the other side, some say unit rates at 100Green are higher than at bigger companies. However, most feel the extra cost is worth it. The benefits of helping real clean energy generation and supporting renewable energy matter most to them.

Yes. 100Green lets people on prepayment (PAYG) top up their meters like they always do. The most common way to pay is monthly by Direct Debit. This can help with planning and usually has the lowest rates. If you use a prepayment meter with another company, you can still switch to 100Green. This may give you a better deal and makes sure all your energy usage is from renewable sources.

To find out if 100Green fits your needs, enter your postcode in our Free Price Compare energy tool. It will show all the 100Green tariffs. You will also see offers from other suppliers, like the Big Six and new green energy companies. The tool lets you compare electricity and gas prices, daily standing charges, and how much you might pay in a year for your home. After the compare, you can switch online in a few minutes. This helps you get a better deal, supports green energy, and brings price certainty for you.