What Connected Energy does

Connected Energy Ltd. is a UK-based, privately held developer of battery energy storage systems built exclusively from second-life electric vehicle batteries. Founded in 2010 by CEO Matthew Lumsden and headquartered in Newcastle upon Tyne with an engineering centre in Hethel, Norfolk, and a French development arm established in Bordeaux in 2025, the company repurposes lithium-ion batteries retired from electric vehicles (primarily Renault, with expanding supply from Volvo, Caterpillar, Jaguar Land Rover, Forsee Power, and Nissan) into commercial and grid-scale storage assets. As of late 2025, approximately 30 commercial systems are operating across the UK and continental Europe, with a 225+ MWh pipeline secured in France including a flagship 100MWh project in Centre-Val de Loire.

The company's product portfolio comprises two core hardware systems: E-STOR (300kW / 360kWh commercial unit, scalable to eight aggregated units per site) and M-STOR (multi-MW grid-scale system delivering 3.8-100MWh capacity, 1.45-5.8MW power, and 2.3-11.7h duration). These are managed by proprietary cloud-based energy management software with AI-driven optimization, anomaly detection, and predictive analytics built on 12.5 million hours of operational data and 2.5+ million daily data points per system. Revenue is generated through multiple channels: direct hardware sales of E-STOR/M-STOR systems, Battery-as-a-Service monthly subscriptions, revenue-share partnerships on grid services, and grid-scale project development where Connected Energy develops, owns, and operates sites monetizing second-life batteries through frequency response, arbitrage, peak shaving, and energy trading. Reported unit economics include >£100k annual revenue per MW for customers, 5-year payback, 21% IRR over 15 years for commercial installations, and 12-18% ROI on grid-scale projects.

Connected Energy sells primarily through direct enterprise field sales targeting large commercial and industrial sites, local authorities, utilities, EV charging operators, ports, and educational institutions, supplemented by OEM and battery-supplier referral channels. Pricing is offered via capex purchase, Battery-as-a-Service leasing, or revenue-share structures. The company has raised approximately £23 million across three disclosed funding rounds (2018, 2019, 2022), with investors including Macquarie Group, ENGIE New Ventures, Sumitomo Corporation, Volvo Energy, Caterpillar Venture Capital, Hinduja Group, Mercuria, OurCrowd, Low Carbon Innovation Fund, and Turquoise Capital. The company holds ISO 9001, 14001, and 45001 certifications, and a Lancaster University-validated study reports 450 tonnes CO2e carbon savings per MWh versus first-life lithium-ion alternatives.

Name

Connected Energy

Legal name

Connected Energy Ltd.

Website

https://connected-energy.co.uk

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

11–50 employees

Short description

Connected Energy is a UK-based developer of battery energy storage systems built exclusively from second-life electric vehicle batteries, selling commercial (E-STOR) and grid-scale (M-STOR) systems to enterprises, local authorities, utilities, and EV charging operators across the UK and Europe.

Ownership category

akta.pro rank

Product category

Energy Storage Systems

NAICS

Battery Manufacturing (335910), Electric Power Generation (22111)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600), Electric Services (4911)

akta.pro primary industry

Battery Second-Life Repurposing & Integration (Stationary Reuse, Repack/Remanufacture) (EUAFACAG)

akta.pro secondary industries

Testing, Grading & State-of-Health (SoH) Diagnostics (EOL Assessment, Certification) (EUAFACAH), Battery Second-Life, Testing & Repurposing (EV-to-Stationary) (EUAIAIAK), Lifecycle Analytics, LCA & Circularity Consulting (Footprinting, Material Flow Analysis) (EUAFACAK), Battery Modules & Packs (Industrial/Commercial pack assembly) (IMAGAHAB)

Keywords

• Second-life battery storage
• Grid-scale energy storage
• Commercial battery systems
• Circular economy batteries
• EV battery repurposing

Headquarters

HQ city

Newcastle Upon Tyne

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Battery Energy Storage System Sales: Sale of E-STOR and M-STOR battery energy storage systems to commercial, industrial, and utility customers. Systems priced with multiple finance options including outright purchase, battery-as-a-service leasing, and revenue share models.
2. Grid Services Revenue: Revenue generated from frequency response, arbitrage, peak shaving, and grid balancing services. Customers typically generate >£100k additional annual revenue per MW of installed capacity through energy wholesale market participation.
3. Battery-as-a-Service: Monthly fee leasing model for batteries reducing upfront capital expenditure for customers. Lower capex costs compared to first-life alternatives.
4. Revenue Share Partnership: Partnership model with reduced upfront investment and performance-based revenue sharing with customers and partners.
5. Grid-Scale Development and Trading: Developing and operating grid-scale BESS sites, monetizing second-life EV batteries through energy trading and grid services. ROI between 12-18% depending on system configuration and market participation.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels9 records

Core offering

Connected Energy designs, manufactures, and supplies battery energy storage systems built exclusively from second-life electric vehicle batteries. Its product range spans the E-STOR commercial system (300kW/360kWh) and the M-STOR grid-scale system (3.8MWh to 100MWh), sold or leased to commercial, industrial, public sector, utility, and EV charging customers across the UK and Europe. The company also operates a Battery-as-a-Service financing model and develops grid-scale projects directly through its French Connected Developments arm.

Product overview

Connected Energy offers a portfolio of battery energy storage products built exclusively from second-life electric vehicle batteries, supporting the circular economy. The core product family consists of two systems: E-STOR (commercial scale, 300kW/360kWh) and M-STOR (grid-scale, 3.8MWh to 100MWh). These are complemented by supporting services including a free feasibility study tool, flexible financing models (Capex Purchase, Battery-as-a-Service, Revenue Share), and proprietary energy management software with AI-based real-time monitoring and optimisation. All systems use second-life EV batteries sourced from OEMs including Renault, Volvo, Caterpillar, and Jaguar Land Rover.

Differentiator

Problem solved

Functional benefit

Brands

• E-STOR: Commercial battery energy storage system (300kW/360kWh) designed for commercial and industrial applications using second-life EV batteries.
• M-STOR
• Connected Developments

Products and services

• E-STOR Commercial Battery Energy Storage System A 300kW power rating with up to 360kWh capacity commercial battery energy storage system housed in a 20ft container, using second-life Renault lithium-ion vehicle batteries. Features cooling and fire detection safety systems, scales up to 8 aggregated units on the same site, and is managed by real-time monitoring and AI-based control software for applications including EV charging support, solar integration, peak shaving, and grid services.
• M-STOR Grid-Scale Battery Energy Storage System A multi-MW grid-scale battery energy storage product offering flexible power from 1.45MW to 5.8MW and capacity from 3.8MWh to 100MWh with durations from 2.3h to 11.7h. Built around standardised power blocks and configurable for multiple use cases behind or in front of the meter, using second-life EV batteries with real-time monitoring and AI-based optimisation software for utilities, ports, heavy industry, and energy-intensive manufacturing applications.
• Energy Management Software Cloud-based software providing real-time monitoring, actionable reporting, and AI-based optimisation for Connected Energy's battery storage systems, offering visibility into system performance and supporting 24/7 intelligence throughout the operational life.
• Battery-as-a-Service (BaaS) Financing A monthly-fee leasing model for battery storage systems that reduces upfront capital expenditure for customers, sitting alongside Capex Purchase and Revenue Share options. Includes full maintenance and is designed to lower capex costs compared to first-life alternatives.
• Energy Storage Feasibility Study A free human-created feasibility study service that generates site-specific analysis of how a battery energy storage system would perform, including potential carbon savings, cost savings, and revenue projections using Connected Energy's custom-built software with half-hourly grid usage data.

Quantifiable outcome

• 450 tonnes CO2e carbon savings per MWh of second-life system installed compared to new lithium-ion battery systems
• +6 more outcomes

Named customers12 records

Segments8 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature5 records

Partnerships

13 partnerships are on record, tiered major, minor and core.

• NissanmajorStrategic or Co-development Partner · 1 January 2024Joined consortium led by Nissan on APC-funded project to supercharge UK EV battery sustainability. Connected Energy leads second-life battery element building on existing technology to deliver large-scale energy storage.
• AltiliumminorStrategic or Co-development Partner · 1 January 2024Collaboration to extend lifecycle of EV batteries through sustainable and environmentally responsible business models for repurposing and recycling. Brings value to battery manufacturers and automotive OEMs.
• Forsee PowercoreStrategic or Co-development Partner · 1 January 2023Partnership agreement signed in 2025 to jointly design and develop modular, scalable energy storage solution using Forsee Power's ZEN 35 and ZEN 42 battery packs deployed in approximately 1,500 electric buses in Europe.
• Renault GroupcoreStrategic or Co-development PartnerLong-term collaborative relationship established in 2015. Connected Energy incorporates batteries from Renault Fluence and Renault Kangoo vehicles. Joint development of second-life battery technology with ongoing partnership.
• Jaguar Land RovermajorStrategic or Co-development PartnerCollaborated in Innovate UK 2nd hEVen project proving technology could be adapted to use second-life Jaguar I-PACE batteries. Partnership exploring second-life applications for end-of-life EV batteries.
• Mobilize Power Solutions (Renault Group)coreStrategic or Co-development PartnerPart of Renault Group focused on energy and charging solutions. Partnership for closed-loop EV charging solution and ongoing collaboration on second-life battery applications.
• Advanced Propulsion Centre UK (APC)majorOthers£2 million project support for Scottow EV battery testing facility as part of project to enhance EV battery reuse and recycling. Government-backed automotive propulsion innovation center.
• Newcastle University / National Innovation Centre for DataminorStrategic or Co-development PartnerMulti-year collaboration embedding data science skills and AI/machine learning into Connected Energy's software to monitor and predict battery performance.
• Lancaster UniversityminorStrategic or Co-development PartnerAcademic partnership conducting study on carbon impact of second-life EV systems. Study concluded 450t CO2 savings per MWh over battery life for second-life systems.
• Warwick Manufacturing GroupminorStrategic or Co-development PartnerPartnered in Innovate UK 2nd hEVen project alongside Jaguar Land Rover to prove technology adaptability for second-life batteries.
• SWARCO (formerly Evolt)majorChannel Partner/ Reseller/ DistributorEV charging infrastructure company. Connected Energy systems installed along Fast-E corridor and at Dundee City Council charging hubs to manage grid capacity constraints.
• AllegomajorChannel Partner/ Reseller/ DistributorEuropean EV charging operator. Battery storage systems supporting charging on grid-constrained motorway sites in Belgium and Germany, providing additional capacity using Open Charge Point Protocol.
• CapitasminorImplementation/ SI/ Consulting PartnerFinance partner introduced in 2020 to develop new financing models minimizing upfront investment required from businesses.

Scale indicators14 records

Recent moves8 records

Expansion highlights7 records

Direct peers

• B2U Storage Solutions: US-based company that builds grid-scale energy storage systems exclusively from second-life EV batteries, directly mirroring Connected Energy's core model and most comparable in product category and target customer.
• Powervault: UK-based supplier of second-life battery storage systems for commercial and residential customers, operating in the same geographic market with a similar second-life proposition.
• Relectrify: Australia-based company developing battery management and repurposing technology for second-life EV batteries, with overlapping value proposition in extending battery lifecycle via advanced monitoring.
• Smartville: US-based second-life battery storage company that procures, tests, and redeploys retired EV batteries for commercial and grid applications, directly comparable to Connected Energy's core business model.

Broad incumbents

• Fluence Energy: Global leader in grid-scale battery energy storage with a broad portfolio of utility-scale BESS products; competes in the same front-of-meter segment as Connected Energy's M-STOR but uses first-life batteries at scale.
• Tesla Energy: Megapack and Powerwall products position Tesla as a broad incumbent in commercial and grid-scale battery storage, overlapping with both E-STOR and M-STOR use cases though not specializing in second-life.
• Wärtsilä Energy Storage: Provides grid-scale BESS solutions and energy storage optimization software to utilities and developers, competing with M-STOR in the utility/grid-scale segment.
• ESS Inc. Long-duration iron-flow battery storage provider for utility-scale applications, a broad incumbent competing for grid-scale energy storage budgets alongside lithium-ion second-life systems.
• Stem Inc. AI-driven energy storage and software platform that optimizes commercial and industrial battery assets, with comparable AI optimization and grid services focus to Connected Energy's energy management software.

Emerging players

• ReJoule: Early-stage company developing battery state-of-health diagnostics and second-life battery assessment, intersecting with Connected Energy's SoH monitoring capability but more focused on the diagnostic/grading layer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC0menn35d6Mypc4XfIG4MoA
• LinkedInlinkedin.com/company/connected-light
• Xx.com/connected_energ

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds10 records

Investors11 records

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

M&A

Investments

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

Frequently asked questions about Connected Energy