CLS ENERGY (CONSULTANCY) LIMITED

What CLS ENERGY (CONSULTANCY) LIMITED does

CLS Energy (Consultancy) Limited is a chartered energy and fleet consultancy founded in March 2014 and headquartered in Oxford, United Kingdom. The firm delivers energy audits, fleet assessments, ESOS and SECR compliance services, carbon management planning, and bespoke training to large commercial, industrial, and public sector organisations across the UK and at least 12 EU member states. Its service portfolio is anchored by a team of Chartered and Certified Associates led by Director Alan Asbury, one of only six Chartered Fellows of the Energy Institute registered to conduct ESOS-compliant fleet assessments. The methodology combines IPMVP-certified Measurement and Verification, forensic telematics analysis, GHG Protocol-aligned carbon baselining, and Science Based Targets trajectory modelling, with an externally stated track record of 400+ compliant audits, 1,500+ sites assessed, and 340+ fleets profiled.

The underlying technology stack is human-expertise-led rather than software-led: consultants apply IPMVP global M&V standards, telematics forensic profiling, and ISO-aligned assessment tools, supplemented by one associate's bespoke carbon trajectory software and a qualified CAA drone pilot for site surveys. The firm holds no patents, discloses no proprietary AI/ML models, and operates no platform, app, or API; its competitive differentiation rests on chartered credentials (CMVP, CEM, ESOS Lead Assessor, FEI) and a Double-Lock Money-Back Guarantee that reimburses fees if customer savings fall below 8%.

CLS Energy generates revenue through project-based consultancy engagements with a 50% fee on proposal acceptance and 50% prior to report delivery, plus a training line delivering modules to universities (Middlesex, Greenwich) and corporate clients (Toyota Tsusho, Zurich Insurance). Public sector access is enabled via listings on ESPO, LASER, and LGA Expert Programme procurement frameworks, and the firm runs no indirect or self-serve distribution channel. Customer outcomes are externally reported at an average 31% energy and fuel cost reduction per client (5.5% profit uplift) and £29m of customer savings delivered in the trailing 12 months.

Name

CLS ENERGY (CONSULTANCY) LIMITED

Legal name

CLS Energy (Consultancy) Ltd

Website

https://clsenergy.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

1–10 employees

Short description

CLS Energy (Consultancy) Limited is a chartered Oxford-based consultancy delivering ESOS/SECR compliance, energy audits, and fleet fuel-saving assessments to large commercial, industrial, and public sector organisations across the UK and EU.

Ownership category

akta.pro rank

Product category

Energy & Fleet Management Consultancy

NAICS

Environmental Consulting Services (54162)

akta.pro industry

PRIMARYEUAHAIAJ

Operational Controls, SOPs & Environmental Work Instructions

Energy, Utilities & Environment/Environmental Compliance, Monitoring & Consulting/Environmental Management Systems (EMS) & ISO 14001 Consulting

SECONDARYEUAMANAF

Renewable Portfolio Standards (RPS) & Clean Energy Standards Compliance

Energy, Utilities & Environment/Renewable Energy (Solar, Wind, Hydro & Geothermal)/Policy & Regulatory Consulting for Renewables

Keywords

• Energy management consultancy
• Fleet fuel optimisation
• ESOS compliance auditing
• Carbon footprint reporting
• Sustainability advisory services

Headquarters

HQ city

Oxford

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy and Fleet Assessment Consultancy: Core consultancy services delivering energy audits, fleet assessments, ESOS compliance, SECR reporting, and carbon reduction planning to large organisations. Services priced via project-based fees with 50% on proposal acceptance and 50% prior to report delivery.
2. Training Services: Bespoke training programmes on environment, sustainability, energy efficiency, climate change, carbon management, and renewable energy delivered to organisations including universities, corporations, and trade associations.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

CLS Energy provides chartered energy management and fleet consultancy services to large commercial, industrial and public sector organisations across the UK and EU. Core offerings include ESOS and SECR compliance audits, IPMVP-certified measurement and verification of energy savings, fleet fuel and telematics assessments, Net Zero carbon trajectory planning, and bespoke sustainability training programmes. Services are delivered through direct engagement by Chartered and Certified Associates with project-based fees.

Product overview

CLS Energy is a chartered energy and fleet consultancy offering a unified portfolio of interconnected services focused on energy efficiency, carbon reduction, and fleet fuel optimisation. The core offerings include Energy Saving Consultancy, Fleet Management, ESOS compliance, SECR & Carbon Management, EU Energy & Fleet Audit, and Net Zero Carbon advisory. These services are complemented by Training programs and Environmental Product Declaration capabilities. The consultancy operates across UK and EU markets, serving commercial, industrial, public sector, and council clients with assessments, audits, and ongoing advisory support.

Differentiator

Problem solved

Functional benefit

Products and services

• Energy Saving Consultancy Chartered energy management consultancy providing energy assessments, IPMVP-certified measurement and verification, building fabric evaluation, energy measure calculations, and technology/controls upgrade advice for large commercial, industrial and public sector estates.
• Fleet Management Comprehensive fleet assessment and management service covering aerodynamic analysis, telematics data analysis, operational profiling, fuel efficiency measures, driver behaviour assessment, and alternative fuel solutions (electric, hydrogen, HVO, CNG, hybrid) for HGV, marine, airline and commercial fleets.
• ESOS Compliance Audit Compliance and advisory service for the Energy Efficiency Directive/ESOS regulations, conducting energy, fleet and process audits every four years across UK and EU member states for large organisations.
• SECR & Carbon Management Streamlined Energy and Carbon Reporting consultancy including carbon footprinting, GHG Protocol compliance, SECR reporting for annual accounts, carbon management planning and Net Zero trajectory development.
• Training Programmes Bespoke training programmes on environment, sustainability, energy efficiency, climate change, carbon management and renewable energy delivered to organisations including universities (MSc-level lectures), corporations, and trade associations.
• EU Energy & Fleet Audit Energy Efficiency Directive compliance assessments delivered across EU member states including Austria, Belgium, Cyprus, Denmark, France, Germany, Greece, Ireland, Italy, Netherlands, Poland and Sweden via local partner network.
• Net Zero Carbon / Carbon Neutral Advisory Carbon neutrality advisory service helping organisations set scope and boundaries, establish baselines, conduct investment-grade audits, develop costed plans, and measure/verify progress toward Net Zero targets using Science Based Targets initiative methodology.
• Environmental Product Declaration (EPD) Type III Environmental Declaration service providing life cycle analysis, carbon/GHG emissions assessments, sustainability evaluations and environmental impact reduction recommendations for products and organisations.
• UK Councils Services Specialist energy, fleet and carbon management advisory for UK local authorities, including climate emergency planning, building and fleet assessments, renewable energy feasibility and carbon reduction trajectories; delivered via ESPO, LASER and LGA Expert Programme procurement frameworks.

Quantifiable outcome

• Average 31% savings on energy and fuel costs; 5.5% uplift on annual profits
• +9 more outcomes

Named customers20 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core and minor.

• BeyondlycoreStrategic or Co-development Partner · 1 January 2022Working alongside partner Beyondly on sustainability projects including Toyota Tsusho UK ESOS Phase 3 compliance engagement. Beyondly appears to provide complementary environmental consulting services.
• Low Carbon ClubcoreStrategic or Co-development PartnerListed as Partner Organisation alongside CLS Energy. The Low Carbon Club exists to share good practice and assist organisations to securely trial novel technologies at little or no risk and share results.
• ECA Business EnergycoreStrategic or Co-development PartnerCLS Energy works with ECA Business Energy on ESOS compliance projects. ECA handles data needs while CLS conducts site and fleet audits. Collaborative delivery model demonstrated with customers like Greenhous.
• Comply DirectminorChannel Partner/ Reseller/ DistributorPartnership with compliance scheme operator for ESOS and environmental reporting. CLS Energy conducts assessments while Comply Direct handles compliance scheme administration for customers like Vivid Imaginations and Beiersdorf.

Scale indicators11 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• South Pole Group: Climate consultancy and project developer offering carbon strategy, climate disclosures, and net-zero advisory to large corporates — overlapping CLS's carbon management and ESOS-adjacent compliance work, with a stronger global brand.
• Anthesis Group: Global sustainability consultancy providing carbon, energy, and ESG advisory services to large enterprise clients, competing for the same net-zero and compliance budget as CLS but with broader geographic and capability footprint.
• Carbon Trust: UK-headquartered, government-backed advisory helping large organizations meet carbon and energy compliance and reduction mandates. Closest direct competitor to CLS, with overlapping ESOS/SECR advisory work and shared public-sector footprint, though operating at materially larger scale.
• EcoAct: International carbon and climate strategy consultancy delivering carbon footprinting, SBTi target-setting, and net-zero advisory to corporates — directly overlapping CLS's Net Zero / SECR / carbon management offering.

Broad incumbents

• Schneider Electric (Energy & Sustainability Services): Global energy management and sustainability consulting arm of Schneider Electric, providing enterprise-grade energy audits, M&V, and decarbonization roadmaps — overlapping CLS's energy-saving and ESOS/SECR work as part of a much wider portfolio.
• WSP Environment & Sustainability: Sustainability and climate advisory practice within global engineering consultancy WSP, offering energy audits, ESOS compliance, and net-zero strategy to enterprise and public sector — overlapping CLS's consulting services but embedded in a much larger engineering parent.
• Mott MacDonald Climate Resilience & Sustainability: Energy, carbon, and sustainability consulting within Mott MacDonald, delivering ESOS audits, carbon management, and net-zero advisory to UK and EU enterprises and public sector — same regulatory-compliance niche but with the resources of a global engineering firm.
• ENGIE Impact: Sustainability and energy transition advisory arm of ENGIE serving large corporates on decarbonization, energy procurement, and compliance — overlaps with CLS's energy and carbon advisory but with multinational delivery scale.

Emerging players

• Carbon Intelligence (Accenture): Carbon and climate strategy consultancy (now part of Accenture) offering GHG accounting, SBTi, and net-zero advisory to large corporates — adjacent competitor in carbon advisory with growing ESOS-adjacent capabilities following Accenture scale.

Regional players

• Econoler / EMM Consulting (now part of WSP): Specialist energy efficiency and M&V consultancy operating in European markets with deep expertise in IPMVP-style measurement and verification — comparable to CLS's IPMVP-led, M&V-driven delivery model but with broader continental European coverage.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/cls-energy-consultancy-limited

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

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 CLS ENERGY (CONSULTANCY) LIMITED