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About us
SmartestEnergy is an international energy company backed by Marubeni. We operate across Europe, the US and Australia helping generators, traders, and corporates navigate the energy transition. With 25 years of global trading expertise and commercial innovation, we are well placed to help large businesses navigate energy complexity with confidence.
Our business areas
Our energy solutions
Power Purchase Agreements and asset optimisation
We provide bespoke commercial structures that unlock competitive market access and optimisation services for renewable and flexible assets. Our product offering spans both fixed and flexible PPAs and bespoke structured revenue solutions tailored to your needs and risk appetite. We are the bankable PPA partner of choice for many new renewable projects awarded with CfD contracts and entering CPPAs.
Meet our PPA experts at E-World
Trading, certificates, and flexibility-backed services
Our trading desk provides access to wholesale markets across Europe with scalable capabilities in power, gas and certificates. We offer a range of structured products to support risk management and commercial performance. These include flexibility-backed trading, cross-border opportunities, and market-leading expertise in carbon and renewable certificates.
Meet trading experts at E-World
Corporate and industrial energy supply solutions
As the third largest UK C&I business electricity supplier, we develop products and services for leading corporates, including our renewable supply products with enhanced traceability and granular carbon reporting. Whether organisations prioritise long-term cost security or more in-depth sustainability credentials, our solutions adapt to their operational and decarbonisation goals.
Why partner with SmartestEnergy?
We can offer the agility of an independent specialist combined with the financial strength and global reach of Marubeni. This means that SmartestEnergy can innovate quickly while providing the scale, liquidity, and stability expected from a major international energy business.
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Route to market
Hundreds of PPAs delivered across multiple markets
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Net zero transition
Proven delivery across the energy transition and net zero pathways
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Scalable and trustworty
Scalable trading capabilities supported by strong liquidity
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Resilient and bankable
Trusted partner for generators, traders, and corporates across Europe
Meet us at E-World energy & water 2026
From 10–12 February 2026, Essen will become the meeting point for the European energy sector. Here, national and international exhibitors, technology providers, traders, and service companies come together to explore innovations that will become integral to shaping a climate-neutral future.
This event provides a focal point for Europe’s energy transition, where expert forums cover market design, trading, digitalisation, smart energy systems, and climate solutions. These themes align directly with our support for PPAs, energy trading solutions in Europe, flexibility-backed models, and corporate decarbonisation strategies.
You can find our team at the SmartestEnergy stand, where we’ll be happy to discuss opportunities across the full energy value chain — from generation and trading to corporate demand.
We also feature on the conference programme. Chief Technology Officer, Rob Pringle will be sharing his insights on driving transparency and innovation in renewable energy in the New Energy Systems Forum, Hall 5, on Day 2, at 4:30pm.
Get in touch
Whether you are exploring PPAs, seeking flexibility-backed trading solutions, or designing a net zero energy procurement strategy, our specialists are ready to help.
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
Existing large business customer?
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
Existing small business customer?