Green Star Energy logo

Who are Green Star Energy?

Green Star Energy (formerly Pioneer Energy) is a gas and electricity supplier based in Milton Keynes. It is part of the Just Energy Group which operates in Canada and North America. All of Green Star Energy’s electricity comes from renewable sources including from hydroelectric and wind generators. Green Star Energy customers will be moved to Shell Energy at the of October 2019.

Green Star Energy Customer Rating 2019

On Trustpilot, Green Star Energy is currently rated 3 out of a possible 5 stars. Green Star Energy came 18th out of 30 energy companies on the annual Which? Energy Supplier Satisfaction survey.

FAQs about Green Star Energy

If you’re after more information about Green Star Energy, look no further. Find the answers to your frequently asked questions below.

Does Green Star Energy have an app?

Not yet. Green Star Energy is currently working on releasing an app that will be available to download for free on Android and iOS.

Is Green Star Energy now part of Shell Energy?

Yes. As of October 2019, all customers of Green Star Energy will be moved to Shell Energy.

What is Green Star Energy’s back billing scheme?

Their back billing policy is that where they’ve made a mistake with your bill, they will not look to recover any payment for previously unbilled energy used more than 12 months prior to the error being detected and the corrected bill being issued.

What are the Green Star Energy Perks?

These are rewards on some of their tariffs that give you points just for being with Green Star Energy. The points can be turned into smart energy products and high street shopping gift cards.

Can I use a smart meter with Green Star Energy?

Yes. You can have one installed for free, however, if you’re switching from another supplier with a smart meter, you may lose some or all of the smart technology features.

How to contact Green Star Energy

You can get in touch with Green Star Energy:

By email at

Over the phone on +44 (0) 800 012 4510

On Twitter via @GSEnergyUK

Looking to change energy supplier?

If you’re after a new energy supplier why not give Switchcraft a try? Our auto switching technology is constantly at work to make sure you’re always on a great plan.

Get Started

About Switchcraft

Switchcraft is a free auto switching service that scours the energy market for great gas and electricity deals. Signing up takes 3 minutes and after that, our technology automatically switches you to new deals each year. Save money on your bills without lifting a finger.