Green Star Energy

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Key information about Green Star Energy

Green Star Energy is an energy company that supplies UK households. It promises to give its customers four things:

  • Renewable energy
    They provide 100% renewable electricity and are looking at how to provide green gas.
  • First Class Service
    It is easy to get in touch with Green Star Energy and they try to anticipate your needs.
  • Experience you can trust
    They are one of largest global energy suppliers but have a UK and Ireland-based customer service team.
  • Competitive prices
    As an independent company, they can keep their prices competitive.

Green Star Energy offers five different energy tariffs. It says that customers who chose one of its dual fuel 12 month fixed term tariffs and chose direct debit and online billing saved an average of £176 when compared to the average ‘Big Six’ Standard Variable Tariff, based on Ofgem’s average energy usage for a medium household.

In 2017, a Which? survey of 23 energy companies in England, Wales and Scotland ranked Green Star eighth for customer satisfaction. The survey looked at customer service, value for money, the accuracy and clarity of bills and how well the company helps you to save energy.

Utility Saving Expert can help you compare energy prices from Green Star Energy, just enter your details above.

Company history

Green Star Energy was launched in 2013. It is the residential arm of Hudson Energy Supply UK Limited. Hudson Energy Supply UK supplies gas and electricity to commercial customers across the UK. Green Star Energy is a subsidiary of Just Energy Group Inc., a publicly traded company consisting of eight brands that serves almost two million customers in Canada and the USA.

 The company’s Managing Director is Joanne Thornton.

How to contact Green Star Energy

Green Star Energy says if you have any questions or need advice or information you should contact them. They have customer service teams in Milton Keynes and Cork and you can get in touch in any of the following ways:

 By phone: 0800 012 4510 lines are open Monday Friday 8:00am to 6:00pm

 By email:

 By post: Elder House 3rd Floor, 586-592 Elder Gate, Central Milton Keynes, MK9 1LR

Green Star Energy is also on Facebook at and on Twitter at

If you would like to make a complaint about Green Star Energy, here are the contact details you need:

 By phone: 0800 012 4510 lines are open Monday Friday 8:00am to 6:00pm

 By email:

 By post: Customer Service, Elder House 3rd Floor, 586-592 Elder Gate, Central Milton Keynes, MK9 1LR

If you can smell gas, call the Gas Emergency Services on 0800 111 999.

If you have no electricity, Green Star Energy says you need to contact your Local Electricity Network Operator. You will find their details on Green Star Energy’s website at

Head office

The map below shows the head office location for Green Star Energy.

Help for low income families or those in debt

If you are having trouble paying your bill, you should let Green Star Energy know immediately by calling 0800 012 4510. The company says it will work with you to find a suitable payment plan.

One alternative which is often suggested if you are struggling with your energy bills is a pre-payment meter. Pre-payment meters let you pay for your electricity and gas upfront. The system is similar to a pay-as-you-go mobile phone. Pre-payment meters help you to pay back money you owe as well as stop you falling behind again. Green Star pre-payment meter customers buy credit at their local Post Office, PayPoint or PayZone.

As well as providing solutions to help you if you are struggling to pay your energy bills, Green Star Energy also publishes simple tips that can help you reduce the amount of energy you use in your home and therefore reduce your energy bills.

Green Star Energy recommends the following measures:

    General Advice
  • Replace incandescent with energy-efficient compact fluorescent bulbs.
  • Turn off electrical appliances when you leave the room or aren’t using them.
  • Make sure your home is properly insulated.
    In the kitchen
  • Dry items in the dishwasher simply by opening the door and not using a high temperature option.
  • Boil only the amount of water you need when you use the kettle.
  • Use smaller appliances such as the microwave or toaster instead of the oven.
    In the Bathroom
  • Use a low-flow shower head.
  • Take short showers instead of baths.
  • Install dual-flow toilets to reduce the amount of water used per flush.
  • Insulate your water heater and all water piping.

Warm Home Discount Scheme

The government’s Warm Home Discount Scheme gives eligible people a £140 discount on their electricity bill between October and April. The Warm Home Discount Scheme payment doesn’t affect your annual Winter Fuel Payment or any Cold Weather Payment you might receive.

You are automatically eligible for the scheme if your energy company is part of the scheme and you get the Guarantee Credit element of Pension Credit. You may be eligible if your energy company is part of the scheme and you are on a low income or you get certain means-tested benefits.

For more information on the Warm Home Discount Scheme you can visit

Green Star is not part of the Warm Home Discount scheme so its customers are not eligible for the discount.

Fuel sources

By law, Green Star Energy is required to provide information on the fuel sources for their electricity. They promise to use 100% renewable electricity. It gives its fuel mix as follows and provides the UK average for comparison.

Energy Source Green Star Energy UK Average
Coal 0% 17.00%
Natural Gas 0% 32.30%
Nuclear 0% 23.70%
Renewables 100% 24.30%
Other Fuels 0% 2.50%
Total 100% 100%

The CO2 Emissions are 0g/kWh (compared to a UK average of 290g/kWh) and its high-level radioactive waste as 0g/kWh (compared to a UK average of 0.007g/kWh).

Tariff Name Variable Tariff Fixed Rate Tariff Exit Fees
Green Saver 12m Fixed + Perks 1705 No Yes £30.00, 12 months
Rate Saver 12m Fixed + Perks 1709 No Yes £30.00, 12 months
Rate Saver 12m Fixed 1709 No Yes £30.00, 12 months
Rate Saver 18m Fixed + Perks 1706 No Yes £30.00, 12 months
Rate Saver 18m Fixed 1706 No Yes £30.00, 12 months
Rate Saver 24m Fixed + Perks 1705 No Yes £30.00, 12 months
Rate Watch Pay as you Go Yes No No exit fees
Rate Watch Variable Yes No No exit fees

Green Star Energy reviews

According to the latest Which survey, Green Star placed 8th out of 23 energy companies for overall customer satisfaction.

The table below shows the breakdown of the Green Star Energy review.

Performance Measured Star Rating
Customer service and complaints
Value for money
Billing accuracy and clarity
Helping customers save energy
Customer Score

Compare Green Star Energy

It’s quick and easy to compare Green Star Energy tariffs against other leading suppliers with Utility Saving Expert. Ltd’s gas and electricity energy comparison service is provided by Energylinx – Registered Address: e-centre, Cooperage Way Business Village, Alloa, FK10 3LP.

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