Name

Quidos

Legal name

Quidos Ltd.

Website

https://quidos.co.uk

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Energy Efficiency Training and Accreditation Software

NAICS

Environmental Consulting Services (54162)

SIC

Services-Computer Programming Services (7371)

akta.pro primary industry

ESG Strategy & Materiality Assessment (EUAHAJAA)

akta.pro secondary industries

Sustainability & ESG Consulting (BPAHACAK), Air Quality & Emissions Management (BPAHAJAI)

Keywords

• Energy efficiency training
• Assessor accreditation
• Energy assessment software
• Retrofit coordination
• Building compliance

Headquarters

HQ city

Bath

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, Others

Revenue model

1. Training Courses: Revenue from accredited training courses for energy assessors, including Domestic Energy Assessor, Non-Domestic Energy Assessor, and Retrofit Assessor courses
2. Software Subscriptions: SaaS-based software tools for energy assessments including RdSAP, SAP, U-Value Calculator, Legionella Report, and Air Con Report software
3. Accreditation Fees: Membership and accreditation fees for energy assessors joining the Quidos scheme
4. Online CPD Modules: Continuing professional development modules across various topics including auditing, construction, domestic, HVAC, non-domestic, renewables, retrofit, and ventilation
5. Technical Monitoring Services: Property inspection services through Quidos Protect, including pre-installation, mid-installation, and post-installation inspections

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Quidos is a UK-based end-to-end energy efficiency group that trains and accredits energy assessors, and provides proprietary software tools (RdSAP, SAP, U-Value Calculator, Retrofit, Legionella, Air Con, Digital Home Survey, Adaptiv) for producing compliant building energy assessments and certificates. It also runs technical inspection services (Quidos Protect) and continuing professional development modules for accredited professionals.

Product overview

Quidos operates as the UK's only end-to-end energy efficiency group, offering a platform-plus-services architecture comprising proprietary software tools (RdSAP Tool, SAP Tool, U-Value Calculator, Retrofit Software, Calculation Engine, Air Con Report, Legionella Report, Digital Home Survey, and Adaptiv Solutions), training courses (Domestic and Non-Domestic Energy Assessor Training, Retrofit Assessor Training, Online CPD Modules, and Funded Courses), and accreditation schemes (Energy Assessor, Retrofit, ESOS Lead Assessor, F-Gas, Legionella Risk Assessment, Jersey, U-Value Competency, Installer, and APEL). Quidos Protect provides technical monitoring inspections. The software tools are designed to interoperate for producing compliant energy certificates, while training and accreditation services support professional certification pathways in the energy assessment sector.

Differentiator

Problem solved

Functional benefit

Products and services

• RdSAP Tool SaaS software tool for producing Reduced Standard Assessment Procedure (RdSAP) energy assessments for domestic properties, used by accredited Domestic Energy Assessors to generate Energy Performance Certificates.
• SAP Tool SaaS software for Standard Assessment Procedure (SAP) calculations for new build domestic properties, used by energy assessors to produce compliance certificates for new dwellings.
• U-Value Calculator Online calculator for determining thermal transmittance (U-value) of building elements, used by energy assessors and U-Value competency registered professionals.
• Retrofit Software Software supporting retrofit assessments and coordination for whole-house energy efficiency improvements under PAS 2035, used by accredited Retrofit Assessors and Coordinators.
• Calculation Engine Backend calculation engine powering energy assessment calculations across Quidos' software tools, underpinning RdSAP, SAP, and related assessments.
• Air Con Report Software Software for producing air conditioning inspection reports as required by F-Gas and TM44 regulations, used by qualified air conditioning inspectors.
• Legionella Report Software Software for producing Legionella risk assessment reports for water systems under ACoP L8, used by accredited Legionella risk assessors.
• Digital Home Survey Digital tool for conducting comprehensive home surveys including energy assessments, used by surveyors and assessors to capture property data on-site.
• Adaptiv Solutions Carbon sourcing solution for meeting energy efficiency and carbon reduction obligations, helping organisations source carbon credits or compliance outcomes.
• Quidos Protect Technical monitoring and inspection service for heating and energy efficiency installations, including pre-installation, mid-installation, and post-installation inspections with three category levels.
• Energy Assessor Training Courses Accredited training courses for Domestic and Non-Domestic Energy Assessors, including 5-day online courses designed to qualify candidates for assessor accreditation.
• Retrofit Assessor Training Specialized training for professionals conducting retrofit assessments on existing buildings under the PAS 2035 framework.
• Funded Courses Government-funded training courses for eligible candidates seeking energy assessment qualifications.
• Online CPD Modules Continuing Professional Development modules covering auditing, construction, domestic, HVAC, non-domestic, renewables, retrofit, and ventilation topics, used by accredited professionals to maintain CPD points.
• Energy Assessor Accreditation Government-approved accreditation scheme for Domestic and Non-Domestic Energy Assessors producing Energy Performance Certificates and related certificates.
• Retrofit Accreditation Government-approved accreditation for Retrofit Coordinators and Retrofit Assessors involved in whole-house retrofit projects under PAS 2035.
• ESOS Lead Assessor Accreditation Accreditation for energy assessors qualified to conduct Energy Savings Opportunity Scheme (ESOS) compliance assessments for UK organisations.
• F-Gas Certification Certification scheme for companies handling fluorinated gases in refrigeration and air conditioning equipment.
• Legionella Risk Assessment Accreditation Accreditation scheme for professionals conducting Legionella risk assessments on building water systems under ACoP L8.
• Jersey Energy Assessor Accreditation Specialized accreditation for energy assessors operating in Jersey, Channel Islands.
• U-Value Competency Register Competency register for professionals qualified to calculate U-values for building fabric assessments.
• Installer Certification Certification scheme for installers of energy efficiency and low-carbon technologies.
• APEL Accreditation Accreditation for Prior Experiential Learning, recognizing professional experience in lieu of formal qualifications for energy assessors.

Named customers4 records

Segments6 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• Salus CertificationminorStrategic or Co-development PartnerPartnership with Salus Certification scheme, shown as one of the accreditation schemes under the Quidos umbrella. Salus focuses on certification services for professionals.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• NICEIC: UK's main electrical and building services certification body. Comparable in being a UK scheme operator for trade competencies (electrical, plumbing, renewables) and is a recognized alternative for installer certification.
• City & Guilds: Major UK vocational qualification and training provider. Competes for energy assessor training enrolments and offers accredited qualifications across domestic, non-domestic, and retrofit pathways.
• BRE Group (Building Research Establishment): UK building science and standards body offering BREEAM, training, and certification services. A broader incumbent that overlaps with Quidos in building energy performance competency and accredited training.
• BSI Group: Global standards and certification body. While much broader than Quidos, BSI is adjacent through PAS 2035 retrofit competency and ISO-aligned energy management certifications that overlap with Quidos' training portfolio.

Direct peers

• ECMK: UK government-approved accreditation scheme for domestic and non-domestic energy assessors. Competes directly with Quidos for EPC-producing assessors and offers a comparable software + accreditation stack.
• CIBSE Certification: Certification arm of the Chartered Institution of Building Services Engineers, providing accreditation for non-domestic energy assessors and Low Carbon Consultants. Comparable in scheme portfolio and target assessor segments.
• Elmhurst Energy: The leading direct UK competitor to Quidos: an approved accreditation body for domestic and non-domestic energy assessors, also offering energy assessment software, training, and CPD — competing head-to-head for the same UK assessor customer base.
• Stroma Certification: UK accreditation and certification body for energy assessors, retrofit coordinators, and installers. Closely comparable to Quidos in scheme structure, software tooling, and assessor training offerings.

Emerging players

• Carbon Trust: Sustainability advisory and certification organization. Comparable through ESOS lead assessor compliance support, carbon reduction services (overlapping with Quidos' Adaptiv Solutions), and energy efficiency training.
• DesignBuilder Software: UK-based building energy modelling software vendor. Adjacent rather than direct — targets building performance modellers and assessors with calculation software, overlapping with Quidos' calculation engine and SAP/RdSAP tooling.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/quidos
• Facebookfacebook.com/Quidos
• LinkedInlinkedin.com/company/quidos-limited
• Instagraminstagram.com/quidos_uk

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 Quidos