Fast track to net-zero
We're empowering businesses to set meaningful net-zero targets, providing the products and tools needed to report zero carbon emissions.
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SmartestEnergy
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Commercial and Industrial
Commercial and Industrial
Commercial and Industrial
Commercial and Industrial (C&I) businesses and energy consultants can explore our wide range of fixed and flexible contract structures here, with certified 100% renewable electricity available across all our products.
Commercial and Industrial
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Business
Business
Business
SmartestEnergy Business offer a range of competitive electricity and gas products to suit any small-medium UK business. Find out how we can help your business reduce your energy costs and protect you against market price uncertainty.
Business
SmartFix Renewable Product Guide
Learn more about taking the smartest journey to renewable energy, download our SmartFix renewable product guide.
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Generators
Generators
Generators
We offer independent generators a competitive route to market with our various Power Purchase Agreements (PPAs) suitable for renewable and flexible assets. Take advantage of our trading expertise spanning 20 years and find out how we can help you maximise your assets’ potential.
Generators
SmartFlex trading portal
Track the market, react to price spikes and trade at the click of a button with SmartFlex, available with our Flexible PPA product.
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About Us
About Us
About Us
SmartestEnergy is a B2B energy company empowering switched-on customers, generators and partners to get to net zero. See how our unique business model sets us apart from our competitors and why the support from our parent company, Marubeni Corporation makes us a stable, well-resourced partner.
About Us
Celebrating 20 years of SmartestEnergy
Having been established in 2001, SmartestEnergy celebrates 20 years of shaping the global energy landscape this year and reaffirms our commitment to driving a smarter transition to net-zero globally.
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Info Hub
Info Hub
Info Hub
All our published content is available within the info Hub, providing everything from the latest industry news to key company updates and insights from our in-house experts. Inform your energy strategy with these resources.
Info Hub
Download our latest Annual report
In our latest Annual Report and Financial Statements, we reflect on the year 2022-23 and the progress we have made in the months since, recapping our business activities, highlighting our key achievements, and looking towards the future of SmartestEnergy.
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Customer Service
Customer Service
Customer Service
Here you will find information relating to billing and payments; guidance on how to advise us about a change of tenancy or new meter connection and how to contact our customer service teams for Industrial and Commercial, Business and Smart Generation.
Customer Service
Access our online customer tools
Our customer login page provides a dedicated area for customers to access all online tools centrally and easily manage their energy contracts day-to-day
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Contact us
Contact us
Contact us
Here you will find the contact details for SmartestEnergy Limited and SmartestEnergy Business, as well as our office locations. Reach our sales and customer services teams via phone or email or submit a general enquiry using our online form.
Contact us
Join our team and power a revolution
Discover what it’s like to work for a next generation energy company. Search our current job vacancies and apply to be part of the SmartestEnergy team
Explore career opportunities 
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Independent Renewable Investment Tops £3bn
After the launch of our 2019 Energy Entrepreneurs Report this week, in the first of a three-part series, Chief Commercial Officer, Dave Cockshott explores the findings for the renewables sector, as well as what the future holds for project developers. The expansion of the independent renewable energy generation sector over the past seven years has been truly remarkable. Back in 2012, there was only 4.7GW of capacity contributing to Great Britain’s decarbonisation efforts, but now that figure ha...
17 05 2019
Read moreBlog - 17 May 2019
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2019 Summer Outlook: Meeting The Challenges
After the System Operator published its Summer Outlook, it is clear that summer demand can be met. In this blog, Head of Marketing, Mike Shirley looks at the issues facing National Grid this summer, and what market participants can do to meet the needs of the grid. In the first Summer Outlook since the Electricity System Operator (ESO) was spun off from the Transmission Owner, peak electricity demand for this summer has been estimated at 33.7GW, a reduction of 200MW on last year’s peak summer f...
05 04 2019
Read moreBlog - 5 April 2019
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Our learnings from the Leighton Buzzard Big Battery
Yesterday, Angus Widdowson presented at the Energy Storage and Connected Systems conference, sharing our experience as a commercial partner on UKPN’s Leighton Buzzard battery storage project. Here he takes us through the lessons learned and what SmartestEnergy are doing on the back of this to build a viable route to market for grid scale projects. The Leighton Buzzard 6MW/10MWh Lithium-ion battery connected to the grid in November 2014. Our role as trading partner included providing access to t...
09 02 2017
Read moreBlog - 9 February 2017