SmartestEnergy for Business
Looking to get a SmartestEnergy business energy quote in 2026? We have put together the complete guide to help you decide whether SmartestEnergy Business is the right supplier for your company. As the UK's 5th largest supplier by volume, SmartestEnergy Business brings renewable energy, price certainty, and over 15 years of experience to UK businesses of all sizes.
19th May 2026
Rehan Hamid
SmartestEnergy for Business
About SmartestEnergy Business
SmartestEnergy Business Limited is a UK-based business energy supplier, registered in England and Wales (Company No. 06468946) and headquartered in Worthing. Originally founded in 2009 as Dual Energy, the company rebranded to SmartestEnergy Business in 2020 following its acquisition by SmartestEnergy Ltd. Today it is a wholly-owned subsidiary of Marubeni Corporation — a Fortune Global 500 company with over 50,000 employees in 68 countries — providing the financial strength to back long-term energy contracts.
Track Record & Scale
Since 2009, SmartestEnergy Business has powered more than 100,000 UK businesses, growing to 84,000 active supply points and delivering 1.99 TWh of energy annually. This places it among the top five UK suppliers by volume — a remarkable achievement for a supplier focused entirely on the commercial market. In 2014 it was ranked in the Sunday Times Fast Track 100 as one of the UK's fastest-growing private companies.
Sustainability & Green Credentials
SmartestEnergy Business is strongly committed to the environment. They offer 100% renewable electricity products at no price premium and plant 10 trees for every renewable energy customer. To date they have planted over 93,000 trees globally and avoided more than 480 tonnes of CO₂ emissions through initiatives such as fuel-efficient cook stoves in Uganda.
Why choose SmartestEnergy?
100% Renewable Energy
Access green electricity at no premium — with 10 trees planted per renewable customer.
Fixed Contracts Up to 5 Years
Protect your business against volatile wholesale energy markets with long-term price certainty.
SmartWeb Account Platform
24/7 online account management with real-time usage tracking and billing visibility.
Global Backing
Backed by Marubeni Corporation, a Fortune Global 500 company — financial stability you can rely on.
When should you renew your SmartestEnergy contract?
If your SmartestEnergy business energy contract is approaching its end date, now is the ideal time to compare your options. SmartestEnergy offers fixed contracts of up to 5 years, meaning locking in at the right time can deliver significant long-term savings. At Ecosave Gas & Power, our energy experts can compare your SmartestEnergy renewal quote against the full market — helping you avoid costly out-of-contract rates.
Ready to get a SmartestEnergy business energy quote? Let Ecosave Gas & Power guide you to the best deal and help you save money on your next contract.
Don't want to deal with the stress of switching?
Let Ecosave Gas & Power handle it for you!
Think switching or renewing your SmartestEnergy contract is too much hassle?
Think again!
At Ecosave Gas & Power, we make switching your business energy supplier simple, seamless, and completely stress free.
Our dedicated team of energy experts will handle everything — from requesting quotes to managing supplier communication. If anything goes wrong during the switch, we will be there every step of the way to ensure it runs smoothly.
So why wait? Save time, avoid the headaches, and contact Ecosave Gas & Power for the best business gas and electricity deals today!