what our customers say

Read a sample of testimonials below from our customers about working with SmartestEnergy. If you would like to find out more about how SmartestEnergy can supply energy to your business, please contact us here.


“Interxion is committed to sustainability across its extensive European network of data centres and our 100% renewable energy supply deal with SmartestEnergy in the UK is an important part of that commitment. The clear audit trail and renewable energy certificates provided by SmartestEnergy ensure we are able to demonstrate our environmental credentials. We value the insight SmartestEnergy is able to bring to the energy market in areas such as the potential impact of regulatory change on our business. We have also found the Account Management facilities and levels of Customer Service provided to be excellent.”

Dr Graeme Creasey
Director of Operations


Marks and Spencer | SmartestEnergy"They have demonstrated their capability in supporting the local renewable energy sector and we are delighted to be working with such a strong and responsive organisation."

Giacinto Patellaro
Energy Contracts Manager
Marks & Spencer

"Managing the way we use energy more efficiently and reducing consumption is a key focus of continuing efforts to minimise the environmental impact of our manufacturing operations. SmartestEnergy's innovative eBilling and account management platforms provide us with instant and easy access to the highly accurate data we need to achieve that.

Tony Walker
Deputy Managing Director
Toyota Manufacturing UK

Barnado's | SmartestEnergy

“Since becoming SmartestEnergy’s first retail customer in 2009, we have worked with them on our half hourly supply and also on some fundraising opportunities. Their customer service is excellent and it’s so helpful to be able to pick up the phone and speak to the same person every time.”

David Woodward
Energy Manager


“SmartestEnergy’s experience in both independent generation and energy supply has proved invaluable in developing an agreement which meets our aspirations.”

Linda Burgess
Energy Purchasing Manager


want to join these companies?

If you would like to find out more about how SmartestEnergy can supply energy to your business, please contact us here.