Low energy mode

As a flexibility-backed company, we provide innovative retail solutions and unbiased expertise that really help our customers and partners to succeed. By listening and understanding your business, we can help you make the best energy decisions. All with the industry-leading support from our Customer Services team.

Our customer-first approach

Dedicated support

By really listening to and understanding our customers and partners, we can support them in delivering against their energy goals. It’s why we manage our customers’ everyday needs through dedicated Account Managers and Customer Service Executives.

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A safe pair of hands

With the financial strength and innovation of our Japanese parent company, Marubeni, you can be sure we’re a reliable, stable and long-term energy partner.

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Customer-centred

As an energy supplier that doesn’t own any generation assets, our flexible business model is centred around our customer and our partner relationships.

Think customer

Operational excellence in numbers

We ask our customers to rate the service they receive from us annually, to ensure we're consistently delivering the best experience - from onboarding and all the way through the contract period.

7/10 customer satisfaction score Our business energy customers rated us above the ave. competitor score, across five areas of service (2024).
+16 Net Promotor Score (NPS) We're proud of our leading NPS score, which remains significantly high for business electricity supply.
100% site registration performance We consistently register sites on time for customers that have made the switch to SmartestEnergy.
Average query resolution time of 5 days We aim to respond to customer queries within 5 working days - or sooner if we can!
Committed to high billing performance With our internal billing process, we work hard to make sure our customers receive timely and accurate bills.
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Long-term support

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Your net zero partner

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Technology and innovation

Your supplier for the future

Empowering you to drive positive change

Long-term support

We’ll be by your side as the market grows and changes, helping you navigate the complexities to succeed.

Your net zero partner

We’ll help you make sense of your carbon reduction options and find the right renewable product for your business.

Technology and innovation

From our Carbon Trust verification to Granular’s technology platform, we’ve partnered with industry leaders to give you full transparency.

Your supplier for the future

As the energy landscape changes, we listen to the changing, unique needs of our customers.

What our customers say about us

SmartestEnergy really stood out as not only having a brilliant renewable energy product at a competitive price but also a proactive, adaptable and cost-effective management process.

Caroline Hill, Land Securities

We are particularly pleased with the certification of renewable supplies for our entire portfolio helping us achieve our ambitions for sustainability.

David Mead, JLL

Over the past 5 years, we’ve had great opportunities to work with closely with SmartestEnergy to showcase our procurement of 100% natural renewable electricity and their innovative product development.

Malcolm Webb, British Land

SmartestEnergy provides the responsive customer service we need to manage our portfolio, and it is nice to see them taking a leadership position with Carbon Trust certification of their renewable electricity

Kate Neale, Hammerson plc.