SmartestEnergy
SmartestEnergy is a UK-founded, Marubeni-owned energy retail and trading platform serving large commercial and industrial businesses and renewable generators across the UK, US, Australia, and Iberia through fixed and flexible supply contracts, corporate PPAs, route-to-market services, and tolling and virtual battery agreements.
- Company typePrivate
- Founded2001
- HeadquartersLondon, United Kingdom
- Headcount251–500
- GTM typeB2B
- OfferingServices
What SmartestEnergy does
SmartestEnergy is a multi-regional energy retail and trading company founded in 2001 and headquartered in London, wholly owned by Marubeni Corporation, a Fortune 500 Japanese conglomerate. It serves two principal customer sets: large commercial and industrial businesses with annual consumption above 300,000 kWh, and independent renewable energy generators (wind, solar, and battery storage operators). For C&I customers the company provides fixed, flexible, and renewable electricity supply contracts alongside corporate power purchase agreements; for generators it offers route-to-market services, tolling agreements, contract-for-difference PPAs, and virtual battery contracts. Revenue is generated through energy supply margins (subscription/recurring), PPA structuring fees (transaction-based), tolling and optimization fees (managed services), and trading of environmental products including RECs, CORSIA carbon credits, and biomethane. Operations span four business units, SmartestEnergy UK, SmartestEnergy Business UK, SmartestEnergy US, and SmartestEnergy Australia, plus the recently acquired Factorenergia brand serving Iberia and Latin America, supported by 8 offices and 844+ employees.
The technology stack centers on proprietary trading and customer platforms including the SmartFlex Trading Portal for market position management, an Asset Optimisation Tool for generation and storage dispatch, and SmartWeb Online for SMB customer self-service. The product portfolio includes Traceable Renewable Supply for renewable energy traceability and structured energy products for US customers. Distribution is delivered through direct enterprise field sales, a TEPA-recognized channel partner and broker network, and self-service portals. The company's go-to-market is anchored by broker and partner relationships, evidenced by the 2025 TEPA Supplier of the Year award and the #1 overall satisfaction ranking in the ERCG ABC Study for suppliers under 15 TWh.
Recent strategic activity has been aggressive and externally financed. In July 2025 SmartestEnergy acquired UK smart-meter supplier Dual Energy; in September 2025 it formed a Japan power trading joint venture with Marubeni Power Retail; in December 2025 it partnered with GridBeyond to apply AI-driven price forecasting and bid optimization to 29.7 MW of ERCOT battery storage; and in April 2026 it announced the EUR 204 million acquisition of Spanish retailer Factor Energia S.A. (Factorenergia), marking entry into Iberia and Latin America. Customer logos span Shell Energy, ENGIE, AGL, Neoen, Woolworths Group, Bute Energy, Eku Energy, and Avangrid, with the company holding ISO 27001 certification and operating under Ofgem regulation in the UK.
SmartestEnergy firmographics
Firmographics- Name
- SmartestEnergy
- Legal name
- SmartestEnergy Limited
- Website
- https://smartestenergy.com
- Company type
- Private
- Founded year
- 2001
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- SmartestEnergy is a UK-founded, Marubeni-owned energy retail and trading platform serving large commercial and industrial businesses and renewable generators across the UK, US, Australia, and Iberia through fixed and flexible supply contracts, corporate PPAs, route-to-market services, and tolling and virtual battery agreements.
- Ownership category
- akta.pro rank
SmartestEnergy industry classification
Industry- Product category
- Business Energy Supply
- NAICS
- Electric Power Generation, Transmission and Distribution (2211), Solar Electric Power Generation (221114)
- SIC
- Electric, Gas & Sanitary Services (4900), Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- DER & Microgrid Interconnection / Grid Edge Integration Services (EUAEANAF)
- akta.pro secondary industries
- Demand Response, Load Flexibility & Smart Thermostat Aggregation (EUADAPAM), Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro) (EUACALAJ)
Keywords
Where SmartestEnergy is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices6 records
Markets served
SmartestEnergy business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Energy Supply - C&I Customers: Supplying electricity to commercial and industrial businesses, providing fixed, flexible, and renewable energy contracts. Revenue generated from energy supply tariffs and contract margins.
- Power Purchase Agreements: Facilitating long-term PPAs between renewable energy generators and corporate buyers. Revenue from structuring and intermediating these agreements, including CfD PPAs for UK market.
- Route-to-Market Services: Providing generators with access to energy markets, optimizing asset performance, and managing trading risks. Revenue generated through tolling agreements and optimization fees.
- Virtual Battery Contracts: Contracting capacity at battery storage facilities, providing grid services and market access. Agreements with Neoen for Western Downs Battery and Eku Energy for Ocker Hill project.
- Environmental Products: Trading renewable energy certificates (RECs), carbon credits including CORSIA credits, and biomethane trading solutions.
Go-to-market motion3 records
Distribution channels4 records
Marketing channels6 records
SmartestEnergy product offering
Product offeringCore offering
SmartestEnergy is a B2B energy retailer and trader that supplies electricity and renewable energy solutions to commercial and industrial businesses across the UK, US, Australia, and Iberia. The company also provides route-to-market services for renewable energy generators through power purchase agreements (PPAs), connecting independent generators with corporate buyers of clean energy, and offers related environmental products such as carbon offsets, RECs, and biomethane certificates.
Product overview
SmartestEnergy is a multi-platform energy retail and trading company operating across UK, US, and Australia with a portfolio of distinct regional brands and digital platforms. The core offering includes regional energy supply products: SmartestEnergy UK serves large businesses with fixed, flexible, and renewable electricity supply alongside corporate PPAs; SmartestEnergy Business UK targets small-medium businesses with low-cost renewable solutions via SmartWeb portal; SmartestEnergy US provides creative energy solutions for commercial and industrial customers across 13 states; and SmartestEnergy Australia enables simplified energy buying and selling. The company acquired Dual Energy for smart meter capabilities and expanded into Iberia/Latin America via the April 2026 Factorenergia acquisition. Supporting the supply business, SmartestEnergy operates proprietary digital platforms including SmartFlex Trading Portal, Asset Optimisation Tool, SmartWeb Online, and Broker Portal for trading, asset optimization, and customer management. Environmental products include RECs, carbon credits, CORSIA credits, biomethane, and carbon offsetting services.
Differentiator
Problem solved
Functional benefit
Brands
- Factorenergia: Acquired brand operating in Iberia and Latin America, providing energy solutions for households and businesses across those regions.
Products and services
- Fixed Electricity Supply
Quantifiable outcome
- Powers approximately 81,000 homes annually through Bute Energy wind farm partnership
- +2 more outcomes
Companies that use SmartestEnergy
Customer profileNamed customers9 records
Segments4 records
Ideal customer profiles3 records
SmartestEnergy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability3 records
Feature4 records
SmartestEnergy partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core, flagship, support, major and minor.
- Neoen AustraliacoreSmartestEnergy signed virtual battery contracts for Stage 3 of Neoen's 845-MW Western Downs Battery Energy Storage System in Queensland, Australia. This complements existing deals and brings total virtual battery customers at the site to five, including AGL Energy, Shell Energy, and ENGIE.
- Bute Energycore20-year contract-for-difference (CfD) power purchase agreement for Bute Energy's 93-MW Twyn Hywel Energy Park wind farm near Caerphilly, Wales. The project will feature 14 turbines powering approximately 81,000 homes annually, scheduled for commissioning in late 2027.
- FactorenergiaflagshipEUR 204 million acquisition of Spanish energy leader Factor Energia S.A. Expands SmartestEnergy's global footprint to Iberia and Latin America, accelerating shift to clean energy for households and businesses.
- GridBeyondcorePartnership to optimize three battery energy storage systems totaling 29.7 MW in ERCOT Texas market. GridBeyond provides AI-driven price forecasting and bid optimization for day-ahead and real-time energy and ancillary services, claiming up to 50% revenue improvement over competing solutions.
- CognizantsupportSmartestEnergy engaged Cognizant to strengthen cybersecurity posture and transform employee IT support services. Partnership for security and IT infrastructure improvement.
- AvangridmajorContract for power from two new energy projects in New Hampshire, USA. Strategic relationship with Avangrid (subsidiary of Iberdrola) for renewable energy procurement.
- Dual EnergyminorAcquisition of Dual Energy, a smart meter focused energy supplier. Expands SmartestEnergy's customer base and smart meter capabilities in UK market.
- Eku Energycore10-year tolling agreement for the 99MW/198MWh Ocker Hill battery storage project in West Midlands, UK. This is highlighted as the longest publicly announced debt-financed toll in the UK, supporting Eku Energy's hybrid financing model.
- Neoen AustraliacorePPA for Neoen-owned 440MW New South Wales solar PV project in Australia. SmartestEnergy provides route-to-market services for solar generation.
- UGLsupportContractor for Neoen's Western Downs Battery Project, installing 312 Tesla Megapack 2XL units. Engineering, procurement and construction services for large-scale battery storage.
Scale indicators9 records
Recent moves8 records
Expansion highlights6 records
SmartestEnergy competitors and assessment
Company assessmentBroad incumbents
- EDF Energy: Large UK utility supplying electricity to commercial and industrial customers with a strong renewable generation portfolio. Comparable to SmartestEnergy across the UK C&I supply market, though EDF also owns significant generation assets and serves residential customers, making it a broader incumbent.
- ENGIE: Global utility with major renewable generation portfolio and B2B energy supply operations across the UK, US, Australia, and beyond. Operates as both a competitor (C&I supply) and customer (virtual battery contracts) of SmartestEnergy, illustrating the overlap in the broader renewable energy value chain.
- Centrica: UK-listed parent of British Gas with a substantial B2B energy supply business (Centrica Business Solutions) and growing renewable/PPAs activity. A direct incumbent competitor in UK C&I supply and increasingly in flexibility and PPA services.
- E.ON: European energy company with significant UK and US business energy supply operations and renewable energy development. Overlaps with SmartestEnergy on C&I supply and renewable PPA origination across European and US markets.
- RWE: European utility with one of the largest renewable generation portfolios globally and an active energy trading desk. Comparable to SmartestEnergy on the generation-to-C&I-buyer value chain, though RWE is asset-heavy versus SmartestEnergy's asset-light intermediary model.
- Iberdrola: Global utility with leading renewable generation portfolio (including through subsidiary Avangrid in the US) and corporate PPA origination. Acts as both a competitor and a counterparty generator (via Avangrid) in markets where SmartestEnergy operates, with shared exposure to US C&I renewable demand.
Direct peers
- Octopus Energy: UK-headquartered renewable-focused energy retailer that has expanded into B2B supply and PPA origination through Octopus Energy Generation. Directly competes with SmartestEnergy on renewable supply to commercial customers and increasingly on PPA facilitation in the UK and global markets.
- Statkraft: Norwegian state-owned renewable energy generator and Europe's largest generator of renewable energy, with a significant energy trading and origination business that offers route-to-market services and PPAs. Closest direct peer in terms of being a renewable-power-led trader/originator rather than a traditional utility.
- Lightsource BP: Global solar developer and renewable energy company that originates and trades PPAs and offers route-to-market services. Directly comparable to SmartestEnergy on corporate PPA origination, renewable energy trading, and developer-of-generator relationships.
- Shell Energy: Shell's B2B energy marketing and trading arm, active in wholesale energy trading, PPAs, and C&I supply across the UK, US, and Australia. Directly comparable to SmartestEnergy's energy trading, origination, and C&I supply proposition; also an existing customer of SmartestEnergy via Western Downs virtual battery contracts.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
SmartestEnergy social profiles
Digital presenceSmartestEnergy compliance and trust
Trust signalCompliance1 record
SmartestEnergy financial estimates
Financial estimateRevenue estimate
Valuation estimate
SmartestEnergy leadership team
Management profileNumber of profiles
Profiles5 records
SmartestEnergy subsidiaries and ownership
Company hierarchySubsidiaries1 record
SmartestEnergy funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SmartestEnergy M&A and investment
M&A and investmentM&A2 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SmartestEnergy
What does SmartestEnergy do?
SmartestEnergy is a B2B energy retailer and trader that supplies electricity and renewable energy solutions to commercial and industrial businesses across the UK, US, Australia, and Iberia. The company also provides route-to-market services for renewable energy generators through power purchase agreements (PPAs), connecting independent generators with corporate buyers of clean energy, and offers related environmental products such as carbon offsets, RECs, and biomethane certificates.
Is SmartestEnergy a public or private company?
SmartestEnergy is a private company. It is classified as corporate owned and is currently operating.
When was SmartestEnergy founded?
SmartestEnergy was founded in 2001. It employs 251 to 500 people.
Where is SmartestEnergy based?
SmartestEnergy is headquartered in London, United Kingdom, in the Europe region.
How does SmartestEnergy make money?
Five revenue lines are on record. Energy Supply - C&I Customers are the primary driver. The others are power Purchase Agreements, route-to-Market Services, virtual Battery Contracts and environmental Products.
Who are SmartestEnergy's main competitors?
Broad incumbents on record are EDF Energy, ENGIE, Centrica, E.ON, RWE and Iberdrola. Direct peers are Octopus Energy, Statkraft, Lightsource BP and Shell Energy.
Does SmartestEnergy have an API?
No public API is recorded for SmartestEnergy.
What industry is SmartestEnergy in?
SmartestEnergy's product category is Business Energy Supply. Its primary akta.pro industry code is EUAEANAF, DER & Microgrid Interconnection / Grid Edge Integration Services, with a secondary code of EUADAPAM, Demand Response, Load Flexibility & Smart Thermostat Aggregation. Its NAICS code is 2211 and its SIC code is 4900.