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Bulb Energy review

By Sarah Ingrams

Article 3 of 25

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Bulb Energy

Bulb Energy is a green gas and electricity supplier which offers one tariff. Should you switch to Bulb Energy? We reveal all.

Bulb Energy offers just one tariff with 100% renewable electricity and 10% renewable gas.

Unlike some other ‘green’ energy suppliers, its variable tariff is usually among the cheapest available in England, Scotland and Wales. It doesn’t charge exit fees.

Bulb Energy says it keeps prices low by using ‘cutting-edge technology’ and ‘making lower profits than our competitors’.

We’ve included it in our energy customer satisfaction survey for the first time this year. 

Read on to find out how it fared, or compare gas and electricity prices using Which? Switch to find out if you could save money with Bulb Energy.

Bulb Energy customer score

Bulb Energy came 6th out of 31 energy companies rated by 8,762 members of the public in the annual Which? customer survey – the broadest view of energy companies out there.

Its customers rated it more highly than any of the Big Six energy companies. Keep reading to find out why.

'Cheap energy prices and good supply.'

Bulb Energy customer

Bulb Energy score breakdown

The graphic below shows the breakdown of its score in our latest survey.

Scroll down to read Which?’s verdict on Bulb Energy, plus where its renewable energy comes from.

Find out how Bulb Energy compares with other energy firms in our guide to the best and worst energy companies.

Which? verdict on Bulb Energy

Bulb Energy’s customer score is well above average, but it’s not the highest new entrant in this year’s survey. Octopus Energy, also new to our survey in 2018, scores four percentage points higher and is a Which? Recommended Provider for energy.

Bulb is one of the 11 energy companies whose customers rated them excellent value for money. Its customers also ranked it well for its customer service on the phone.

'They are always willing to answer any questions I may have.'

Bulb Energy customer

However it's not the fastest to answer the phone, according to our undercover investigation into energy companies call waiting times. It took 6min 30sec on average for us to speak with a human. In 2017 it was the fastest firm to pick up, in under a minute. 

On live chat, it responded in 1min 39sec on average; not the fastest (10sec), but far from the slowest (17m 19sec).

Pros: Its tariff is competitive 

Cons: Slower to respond on the phone in our snapshot investigation

Bulb Energy electricity sources

Bulb Energy says 10% of its gas is ‘green’. This gas comes from biomethane produced from organic matter such as sewage and manure.

Discover how much money you can cut from your energy bills. Use Which? Switch to compare gas and electricity prices.

Bulb Energy in the news


September: Customers will face their third price rise of 2018 on 11 November, Bulb announced. It’s increasing the price of its tariff by 11.1%, meaning the average home will pay £102 more per year.

It said that wholesale energy costs had ‘gone up substantially’ since its last price increase in June – and have risen nearly 50% over the past year.

June: Bulb announced its second price increase of the year; 5.1% for the average gas and electricity bill. This will add £44 per year to the average bill from 12 August.

Bulb blamed ‘substantial increases in the wholesale cost of gas and electricity’ for the price increase which will affect all of its 450,000 customers.

February: Bulb announced a price rise of 2.8% on average for all of its dual-fuel customers. It said this would increase a customer’s typical bill by £24 per year. The increase will take affect from 28 April.