What Elmhurst Energy does

Elmhurst Energy Systems Limited (trading as Elmhurst Energy) is a UK-based private limited company headquartered in Lutterworth and founded in 1993, operating as the country's largest independent provider of energy assessment, retrofit, and property professional training, software, and accreditation. Its core offering is an integrated stack of government-approved accreditation and competency schemes for Domestic, Non-Domestic, On-Construction, Retrofit, and specialist profiles (Damp & Mould, Heat Loss, Airtightness, Overheating, ESOS, Section 63), paired with over 77 training courses delivered on-demand, live-online, and classroom across qualification, competency, and CPD tiers.

The technical layer is a proprietary software suite for UK energy compliance calculation and retrofit workflow — RdSAP Online/Mobile, Design SAP 10 (BRE-approved for SAP 10.3), SBEM Online, CoAssess, ECO Surv PAS 2035, Damp & Mould Reporting, plus forthcoming Design HEM software built to interface with Sustenic's Home Energy Model via Government Energy Calculations as a Service. Adjacent revenue is generated through annual conferences in Wales and Northern Ireland and free corporate accounts that bundle multi-assessor management into enterprise engagements.

The business model blends recurring and transactional revenue: annual membership/accreditation subscriptions and software licensing provide recurring base, while individual course fees (priced from £20 to £2,750) and conference tickets drive transactional top-line. Customer segments span four primary assessor personas (DEAs, NDEAs, OCDEAs, Retrofit Assessors/Coordinators) plus secondary corporate buyers such as social housing providers, private landlords, and built environment professionals transitioning into energy work.

Name

Elmhurst Energy

Legal name

Elmhurst Energy Systems Limited

Website

https://elmhurstenergy.co.uk

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

Elmhurst Energy is the UK's largest independent accreditation body for energy assessors and retrofit professionals, delivering government-approved training, proprietary compliance software (RdSAP, Design SAP, CoAssess, HEM), and recurring membership schemes to Domestic, Non-Domestic, and Retrofit specialists.

Ownership category

akta.pro rank

Product category

Energy Assessment Training & Accreditation

NAICS

Testing Laboratories and Services (54138)

akta.pro primary industry

Building Performance, Energy Auditing & HVAC Efficiency (EDAOACAM)

akta.pro secondary industry

Third-Party Certification, Code Compliance & Regulatory Inspection (ASME/API/ISO) (EUAEAHAN)

Keywords

• Energy assessment training
• Retrofit accreditation
• Building energy software
• Energy assessor certification
• Property energy compliance

Headquarters

HQ city

Lutterworth

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Training Course Fees: Revenue from offering energy assessment, retrofit, and property professional training courses. Courses priced individually from £20 to £2,750. Includes qualifications, competency training, and CPD courses delivered online, remote, or classroom.
2. Membership and Accreditation Schemes: Annual membership fees for accreditation and competency schemes. Members receive access to software, support, discounted training, and professional resources. Retrofit Coordinator accreditation first year available for £95 + VAT (normally £350).
3. Software Licensing: Access to proprietary assessment software including RdSAP Online, RdSAP Mobile, SBEM Online, Design SAP, CoAssess, and other specialist tools for energy assessors.
4. Conference Revenue: Annual Elmhurst conferences in Wales and Northern Ireland offering industry updates, training, and networking for energy and retrofit professionals.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels11 records

Core offering

Elmhurst Energy is the UK's largest independent provider of energy assessment, retrofit, and property professional training, software, and accreditation. It sells accreditation and competency schemes (DEA, NDEA, OCDEA, Retrofit Assessor/Coordinator, and specialist competencies), over 77 training courses delivered online, remotely, or in classroom formats, and a suite of BRE-approved proprietary software tools (RdSAP, Design SAP 10, SBEM Online, CoAssess, Damp and Mould Reporting) used to conduct energy and retrofit assessments.

Product overview

Elmhurst Energy operates as the UK's largest independent provider of energy assessment, retrofit and property professional training, software and accreditation. The portfolio consists of two integrated components: a comprehensive suite of training programmes and accreditation/competency schemes (covering Domestic Energy Assessor, Non-Domestic Energy Assessor, On Construction Domestic Energy Assessor, Retrofit Assessor, Retrofit Coordinator, and various specialist competencies including Damp and Mould Assessor, Heat Loss Assessor, Airtightness Testing, and Overheating Assessment); and a complementary software suite for energy compliance calculations (RdSAP Mobile/Online, Design SAP 10, SBEM Online, Air Con Online) and retrofit project management (CoAssess, Condition Report Go, ECO Surv PAS 2035 Workflow Platform, Damp and Mould Reporting, Heat Loss Calculator, U-Value Calculator). The company also organises regional conferences and offers corporate account management services for organisations managing multiple assessors.

Differentiator

Problem solved

Functional benefit

Products and services

• RdSAP Mobile Mobile application enabling Domestic Energy Assessors to conduct Reduced Standard Assessment Procedure (RdSAP) energy assessments of domestic properties in the field.
• RdSAP Online Web-based platform for conducting Reduced Standard Assessment Procedure (RdSAP) energy assessments for domestic properties.
• Design SAP 10 Compliance software for On Construction Domestic Energy Assessors (OCDEAs) to assess the energy performance of new build dwellings. Approved for SAP 10.3 methodology and Future Homes Standard compliance.
• SBEM Online Online tool for Non-Domestic Energy Assessors (NDEAs) to produce energy performance certificates and compliance calculations using the Simplified Building Energy Model methodology.
• Air Con Online Online platform for Air Conditioning Energy Inspections and assessments for non-domestic buildings.
• U-Value Calculator Calculator tool for determining U-values of building elements for new build SAP and SBEM compliance assessments.
• Heat Loss Calculator Calculator for assessing heat loss in domestic properties to support retrofit and energy assessment work.
• CoAssess PAS 2035-compliant retrofit assessment software for conducting whole-house energy efficiency evaluations.
• Condition Report Go Mobile application for producing property condition reports in PAS 2035 retrofit assessments.
• ECO Surv PAS 2035 Workflow Platform Workflow management platform for PAS 2035 retrofit coordination and delivery processes, used by Retrofit Coordinators.
• Damp and Mould Reporting Software Specialised software for assessing and reporting on damp, mould, and condensation in domestic properties in accordance with Awaab's Law requirements.
• Improvement Evaluator for DEAs Tool for Domestic Energy Assessors to evaluate energy improvement options for residential properties.
• Improvement Evaluator for Retrofit Coordinators Software for Retrofit Coordinators to evaluate and recommend energy efficiency improvement options across PAS 2035 retrofit projects.
• Legionella Software Software tool for conducting Legionella risk assessments in property management.
• Occupancy Assessment Tool Assessment tool for evaluating occupancy patterns in PAS 2035 retrofit assessments.
• Domestic Energy Assessor (DEA) Training & Accreditation Qualification and accreditation programme for professionals conducting Energy Performance Certificates for domestic properties.
• Non-Domestic Energy Assessor (NDEA) Training & Accreditation Level 3 and Level 4 qualification and accreditation programme for assessors of commercial and public buildings, including SBEM, DEC and ACI pathways.
• On Construction Domestic Energy Assessor (OCDEA) Training & Accreditation Qualification and accreditation for assessors working on new build residential properties, conducting SAP calculations and design stage assessments.
• Retrofit Assessor Training & Accreditation Training and accreditation for professionals conducting whole-house retrofit assessments under PAS 2035.
• ABBE Level 5 Diploma in Retrofit Coordination and Risk Management Nationally recognised Level 5 qualification for professionals leading domestic retrofit projects. Blended learning with 30 hours on-demand plus 3 days live online or classroom training, covering end-to-end PAS 2035 retrofit delivery.
• Retrofit Coordinator Accreditation
• Damp and Mould Assessor Training & Competency Training course and competency scheme for assessing condensation, damp and mould in domestic properties in accordance with Awaab's Law requirements.
• Non-Domestic Retrofit Lead Assessor Training & Competency Training and competency scheme for PAS 2038-compliant assessments of commercial buildings retrofit.
• Airtightness Testing Training & Scheme Level 1 qualification and competency scheme for air pressure testing of buildings, delivered online and in person.
• Background Ventilation Testing Training & Scheme Training and competency scheme for background ventilation assessment under PAS 2035.
• Overheating Assessment Training & Competency Training for assessing overheating risk in buildings using CIBSE TM52/TM59 methodologies and dynamic thermal modelling.
• ESOS Lead Assessor Training & Scheme Training and competency scheme for Energy Savings Opportunity Scheme (ESOS) lead assessors.
• Older and Traditional Buildings Training ABBE Level 3 award training for retrofit professionals working on older and traditional buildings.
• Corporate Account Management Free centralised platform for organisations to manage multiple assessors and reports, streamlining operational workflow and team accreditation tracking.
• Better Buildings Consultant Certification Certification scheme for Elmhurst members with proven competency across multiple energy, retrofit, or building disciplines.
• Elmhurst Conference: Wales 2026 Annual industry conference in Wales for energy assessors, retrofit professionals, and housing practitioners featuring expert sessions and networking, scheduled for 24 September 2026.
• Elmhurst Conference: Northern Ireland 2026 Annual industry conference in Northern Ireland for energy, retrofit, and housing professionals, scheduled for 12 November 2026.

Quantifiable outcome

• 40% new homes met 2022 standards by Feb 2025 - Elmhurst data cited by government and media

Segments7 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature12 records

Partnerships

Nine partnerships are on record, tiered core.

• SusteniccoreTechnology or IntegrationSustenic is developing the Home Energy Model (HEM) calculation engine, which will replace SAP for energy assessments. Elmhurst is building Design HEM software to interface with the HEM ecosystem through Government Energy Calculations as a Service (ECaaS).
• Focus ConsultantscoreStrategic or Co-development PartnerPartnership with Focus Consultants to deliver Whole-Life Carbon Assessment CPD course, educating professionals on life-cycle assessments and proposed Part Z regulation.
• Building Research Establishment (BRE)coreTechnology or IntegrationBRE approves Elmhurst's Design SAP 10 software for SAP 10.3 methodology. BRE initially developed HEM before transfer to Sustenic.
• DesignBuildercoreTechnology or IntegrationOfficial training partner for DesignBuilder software. Elmhurst offers approved courses for DesignBuilder overheating assessments using TM52/TM59 and SBEM for UK certification.
• IES (Virtual Environment)coreTechnology or IntegrationApproved training partner for IES Virtual Environment software. Courses cover overheating risk analysis using CIBSE TM52, TM59, Part O, BB101, and other guidelines.
• Awarding Body for Building Education (ABBE)coreStrategic or Co-development PartnerElmhurst is an ABBE-approved assessment centre offering ABBE-accredited qualifications including Level 3 Award in Older & Traditional Buildings and Level 5 Diploma in Retrofit Coordination and Risk Management.
• CIBSEcoreStrategic or Co-development PartnerCorporate Partner with the Chartered Institution of Building Services Engineers, providing access to technical standards, guidance (TM52, TM59, TM49, Guide A), and industry credibility.
• Ministry of Housing, Communities and Local Government (MHCLG)coreStrategic or Co-development PartnerMHCLG publishes building regulations including Part L, Part F, Part O, and Future Homes Standard. Elmhurst works closely with government on HEM implementation and policy development.
• Department of Energy Security and Net Zero (DESNZ)coreStrategic or Co-development PartnerDESNZ releases consultations on Home Energy Model and building energy standards. Elmhurst engages with consultations and supports policy implementation.

Scale indicators4 records

Recent moves6 records

Expansion highlights8 records

Emerging players

• DesignBuilder: DesignBuilder is a UK building energy and thermal modelling software company and an Elmhurst approved training partner. It offers overlapping overheating, Part O, and SBEM tooling aimed at the same UK assessor audience.
• Sustenic: Sustenic is the UK government-backed developer of the Home Energy Model (HEM) calculation engine and ECaaS architecture. While a partner to Elmhurst today, it sits at the centre of the HEM ecosystem and is a structural dependency for Elmhurst's Design HEM product strategy.

Direct peers

• Stroma: Stroma operates one of the other major government-approved UK energy assessor accreditation schemes, offering DEA, NDEA, OCDEA and retrofit accreditations. It is the most direct head-to-head competitor to Elmhurst in the UK accreditation market.
• ECMK: ECMK is another approved UK accreditation body for domestic and non-domestic energy assessors, plus retrofit schemes. It competes directly with Elmhurst for accredited members and offers overlapping training and software services.
• Quidos: Quidos is an established UK accreditation scheme for energy assessors offering DEA, NDEA, OCDEA and related competencies. Comparable in business model to Elmhurst, competing for the same pool of UK energy professionals.

Broad incumbents

• Building Research Establishment (BRE): BRE is the UK building science organisation that originally developed the HEM methodology and approves Elmhurst's Design SAP software. As a broader science and standards body, it overlaps with Elmhurst across methodology, accreditation and standards-setting.
• TrustMark: TrustMark is a government-endorsed quality scheme covering retrofit and energy efficiency work, with deep overlap into PAS 2035 retrofit delivery. A broader scheme than Elmhurst, but increasingly relevant to Elmhurst's retrofit assessor and coordinator segments.
• CIBSE (Chartered Institution of Building Services Engineers): CIBSE is the UK professional body for building services engineers and a current Elmhurst Corporate Partner. It provides overlapping training, CPD, and technical guidance (TM52, TM59, Part O) to the same professional audience.
• IES (Integrated Environmental Solutions): IES is a long-established UK building performance simulation software vendor (Virtual Environment) and an approved training partner of Elmhurst. It competes in thermal modelling, overheating, and SBEM-related workflows used by Elmhurst's assessors.

Others

• ABBE (Awarding Body for Building Education): ABBE is a UK awarding organisation that issues the Level 5 Diploma in Retrofit Coordination delivered through Elmhurst as an approved assessment centre. It is an ecosystem partner rather than a competitor, but it shapes the qualification framework on which Elmhurst's retrofit training depends.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

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• LinkedInlinkedin.com/company/elmhurst-energy-systems-limited

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Elmhurst Energy