SmartestEnergy

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.

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

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

• Business electricity supply
• Renewable energy trading
• Commercial power supply
• Corporate power purchase
• Energy retail services

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. 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.
2. 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.
3. 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.
4. 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.
5. 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

Core 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

Named customers9 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature4 records

Partnerships

Ten partnerships are on record, tiered core, flagship, support, major and minor.

• Neoen AustraliacoreStrategic or Co-development Partner · 18 June 2026SmartestEnergy 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 EnergycoreStrategic or Co-development Partner · 15 May 202620-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.
• FactorenergiaflagshipStrategic or Co-development Partner · 16 April 2026EUR 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.
• GridBeyondcoreTechnology or Integration · 3 December 2025Partnership 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.
• CognizantsupportImplementation/ SI/ Consulting Partner · 7 October 2025SmartestEnergy engaged Cognizant to strengthen cybersecurity posture and transform employee IT support services. Partnership for security and IT infrastructure improvement.
• AvangridmajorStrategic or Co-development Partner · 21 August 2025Contract for power from two new energy projects in New Hampshire, USA. Strategic relationship with Avangrid (subsidiary of Iberdrola) for renewable energy procurement.
• Dual EnergyminorStrategic or Co-development Partner · 23 July 2025Acquisition of Dual Energy, a smart meter focused energy supplier. Expands SmartestEnergy's customer base and smart meter capabilities in UK market.
• Eku EnergycoreStrategic or Co-development Partner · 13 May 202510-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 AustraliacoreStrategic or Co-development Partner · 13 September 2024PPA for Neoen-owned 440MW New South Wales solar PV project in Australia. SmartestEnergy provides route-to-market services for solar generation.
• UGLsupportImplementation/ SI/ Consulting PartnerContractor 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

Broad 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

• YouTubeyoutube.com/@SmartestEnergyLtd
• LinkedInlinkedin.com/company/smartestenergy
• Instagraminstagram.com/smartestenergy
• Xx.com/SmartestEnergy

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SmartestEnergy