Our Story: A journey from 2000 to net zero | SmartestEnergy

Explore our Sustainability Update Report 2025 which highlights our strategic achievements and outlines the focus areas that will guide our actions moving forward.

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Our timeline of growth and success

We’re a B2B renewable energy company empowering switched on customers, generators and partners to get to net zero. Founded in 2000, we’ve gone from strength to strength, and are here for the long term.

Our story so far

2000

We were established as an aggregator of independent generation projects

2008

We entered the UK supply market, powering Commercial and Industrial businesses with renewable energy

2012

We were awarded Energy Supplier of the Year 2012

2015

We launched the UK’s first certified 100% Renewable Supply product for Commercial and Industrial businesses

2018

We were awarded Energy Supplier of the Year for the second time 

2019

We acquired our UK SME supply business, SmartestEnergy Business, and opened our first international office in Syracuse, New York

2020

Our UK Headquarters moved to Canary Wharf, and we opened a second international office in Sydney, Australia

2023

We extended our accreditation of renewable products to SME businesses in the UK, and we launched our new brand identity centred on our efforts to empower a greener generation.

2024 milestones

With a 25 year history of driving energy markets forward and empowering the net zero transition, we’ve hit a few important milestones along the way. Here are some from 2024.

4000 energy labels were issued to showcase our customers zero-carbon electricity consumption, verified by the Carbon Trust
Signing our first CPPA we met our customer's demand across across 3,500 sites
"AAA" rating acheived by our parent company, Marubeni, from the MSCI Japan ESG Select Leaders Index
100% renewable energy proposition was boosted through Carbon Trust accreditation and a global reforestation scheme with Ecologi

SmartestEnergy in numbers

We’re on a mission to create a better energy system, and that starts with setting an example. So, as well as empowering a switched on generation, we’re completely transparent about our community’s journey to net zero.

Commercial and Industrial

410% C&I supply market share, ranked 3rd
411TWh Annual Volume
1501637540 Total number of MPANs supplied

Generation

49% renewable independent market share, ranked 4th
37.3TWh Annual Volume
11.6m equivalent British households powered (based on annual expected volume)

Trading

1333% REGO Market Share
1743TWh Energy attribute certificate volume traded
2358+ Million certificates / allowances traded in 2024/25
wind turbine

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.

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  • Our corporate backing

  • Our core values

Large business

If you're a generator or a commercial and industial (C&I) business, you're in the right place.

Am I a large business?

  • More than 300,000 kWh annual volume
  • More than £50k annual spend

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Small business

If you're a micro or smaller business you should visit our SmartestEnergy Business website.

Am I a small business?

  • Less than 300,000 kWh annual volume
  • Less than £50k annual spend
Visit SmartestEnergy Business

Existing small business customer?

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