Low energy mode

SmartestEnergy Business is here to switch up the UK energy market. We’re a people-powered energy supplier on a mission to support the vibrant and diverse business community in lowering carbon emissions on the journey to net zero, towards a greener, sustainable future for everyone.

We take pride in being the trusted and reliable choice for business owners seeking affordable, greener energy solutions, helping to support their sustainability goals. Our commitment to offering the best renewable energy prices is matched by our dedication to delivering unique and exceptional services for every customer.

Louise Wapshare

Chief Executive Officer

Meet the leadership team

SmartestEnergy Business in numbers

100,000 Businesses powered since 2009
21942 New trees planted globally
290.22 Tonnes of CO2e avoided
66,000 Active supply points
1.8TWh Annual Volume
4.2 ‘Great’ Trustpilot Score

Supporting reforestation and positive climate action

For every renewable energy customer,
we plant 10 native and diverse trees to
support global reforestation. We also
actively support climate action projects
targeting carbon emission reduction and
avoidance. Our partners work closely
with local communities, providing new
employment and empowering them with
sustainable practices.

 

Empowering the transition

Our story so far

With a 15+ year history of driving energy markets forwards and empowering the net zero transition, we’ve hit a few important milestones along the way.

2009

Dual Energy enters the UK SME market as a licensed independent electricity supplier

2010

We were one of the first to offer smart meters for businesses, bringing an end to
estimated billing

2014

We ranked in Fast Track 100, the definitive list of the UK’s fastest growing private
companies

2015

We achieved continued growth, securing over 10,000 supply points across the UK

2019

We were acquired by SmartestEnergy Ltd, the UKs largest supplier of renewable
generation

2020

We were appointed our gas supplier license and rebranded to SmartestEnergy
Business

2021

We released our renewable product range to help businesses achieve their net zero
ambitions

2023

We launched our new brand identity to globally focus our efforts on empowering a
greener generation

2024

We achieved a landmark milestone of proudly serving over 50,000 business
customers and counting

Marubeni Corporation

We’re proud to be a wholly owned subsidiary of Marubeni, a Fortune Global 500 company founded in 1858. Marubeni has over 45,000 employees in 58 countries, holds an “AAA” rating from the MSCI Japan ESG Select Leaders Index and has investment-grade ratings of BBB+ and Baa2 from S&P and Moodys. 

Together, we’re a secure partner for the long term.  

Want to know more? Read our latest annual report

SmartestEnergy’s annual report looks back at the highlights of an extraordinary year in the energy industry, recapping our global highlights and net zero ambitions.

Small-medium business

If you're a small-medium business, you're in the right place.

Am I a small-medium business?

  • < 300,000 kWh annual volume
  • < £50k annual spend

Existing small-medium business customer?  

Customer login

Large business

If you're a generator or a commercial and industial (C&I) business you should visit our SmartestEnergy Limited website.

Am I a large business?

  • 300,000 kWh+ annual volume
  • £50k+ annual spend
Visit SmartestEnergy Limited

Existing large business customer? 

Manage account