Energist

What Energist does

Energist UK Ltd is a Cirencester-headquartered, privately held sustainability and building performance consultancy founded in 2006, employing 11–50 people and operating exclusively in the UK construction market. The firm delivers an independent, vendor-neutral advisory service across all RIBA stages (0–7), covering planning-stage work (energy statements, daylight/sunlight and noise impact assessments, BREEAM planning support, London Plan overheating analysis, whole life carbon), design-and-construction services (SAP and SBEM calculations, thermal bridging/psi-values, water efficiency, condensation risk, acoustic design, AD-O overheating risk), and completion-stage certification (air leakage testing, acoustic testing, commercial EPC, thermographic surveys), with over 4,000 air tests and more than 250 BREEAM projects completed to date.

Its core technology is regulatory and computational rather than software-based: energy modelling under SAP 10.x and SBEM, psi-value thermal bridging calculations, overheating dynamic simulation, and on-site air permeability and acoustic testing. The only proprietary process asset is SmartTypes, a structured methodology that validates standard house types once and reuses the resulting compliance model library across repeat volume-housebuilder developments in preparation for the Future Homes Standard 2026.

Energist monetises through professional consultancy fees on a project-by-project basis, with no publicly disclosed pricing. Go-to-market is direct enterprise field sales: the company sells to UK developers, contractors, and construction consultants via website enquiries, phone outreach, and a 'Get a Quote' workflow, and supports demand generation through an SEO-optimised site, a 'Beyond Building' newsletter, and a recurring webinar series. Customer logos include Taylor Wimpey, Wates Residential, St-Modwen, Countryside, Croudace, Bouygues, Watkin Jones, and Telford Homes, indicating a focus on enterprise-grade residential and commercial volume developers.

Name

Energist

Legal name

Energist UK Ltd

Website

https://energistuk.co.uk

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

Energist is a UK-based independent building performance and sustainability consultancy serving developers, contractors, and housebuilders with SAP/SBEM, BREEAM, air leakage, acoustic, and energy compliance services across all RIBA stages, founded in 2006 and headquartered in Cirencester.

Ownership category

akta.pro rank

Product category

Building Performance & Sustainability Consultancy

NAICS

Environmental Consulting Services (54162), Engineering Services (541330)

akta.pro primary industry

EHS Auditing, Inspections & Assurance (BPAHAJAG)

Keywords

• Building performance consultancy
• Sustainability consulting
• Building regulations compliance
• BREEAM assessments
• Energy performance assessments

Headquarters

HQ city

Cirencester

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Building Performance Consultancy Services: Energist generates revenue through professional consultancy fees charged for building performance assessments and compliance services including SAP calculations, SBEM calculations, BREEAM assessments, air leakage testing, acoustic testing, thermal bridging analysis, overheating analysis, energy statements, and related compliance documentation across all RIBA stages.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Energist UK Ltd is an independent sustainability and building performance consultancy providing specialist assessments and compliance documentation for UK construction projects. Services span all RIBA stages (0-7), covering SAP and SBEM energy calculations, BREEAM sustainability certification, air leakage and acoustic testing, thermal bridging analysis, overheating analysis, energy statements, whole life carbon assessment, and ESG strategy advisory. The firm serves residential developers, commercial contractors, and construction consultants with a proprietary SmartTypes solution for repeatable house type validation.

Product overview

Energist is a UK-based sustainability consultancy offering building performance assessment services across all RIBA stages. The portfolio consists of SmartTypes as a proprietary solution for validating standard house types, alongside a comprehensive suite of building compliance services including SAP Calculations and SBEM Calculations for energy performance, BREEAM Assessments for sustainability certification, Air Leakage Testing, Acoustic Testing, Thermal Bridging assessments, and various planning-stage services such as Energy Statements, Daylight and Sunlight Impact Assessments, Overheating Analysis, and Whole Life Carbon Assessments. The company also provides completion-stage services including Commercial EPC, Thermographic Surveys, and an ESG Offering for sustainability strategy. Services are organized by RIBA stages (Planning RIBA 0-3, Design & Construction RIBA 4-5, and Completion RIBA 6-7) covering the full building lifecycle from planning through post-completion certification.

Differentiator

Problem solved

Functional benefit

Products and services

• SmartTypes A structured solution for validating standard house types once and applying them consistently across future developments, providing a reusable compliance model library for meeting energy, overheating, and water efficiency requirements in preparation for the Future Homes Standard.
• SAP Calculations Energy performance assessment for residential dwellings required to generate Energy Performance Certificates (EPCs) for new build properties, supporting Part L compliance under UK Building Regulations.
• SBEM Calculations Simplified Building Energy Model assessments for non-domestic commercial buildings to demonstrate compliance with Part L building regulations.
• BREEAM Assessments Sustainability and environmental performance assessment for buildings covering categories including energy, water, materials, waste, ecology, and management.
• Air Leakage Testing On-site testing service to measure air permeability of buildings and ensure compliance with Part L building regulations for airtightness.
• Acoustic Testing Sound insulation testing for new residential buildings to demonstrate compliance with Part E building regulations.
• Thermal Bridging Analysis Assessment and calculation of heat loss through building junctions using psi-values to optimise thermal performance and meet Part L requirements.
• Energy Statements Planning-stage documentation demonstrating how developments will meet energy efficiency targets and carbon reduction requirements for planning approval.
• Whole Life Carbon Assessment Assessment of embodied carbon and operational carbon over the entire lifespan of a building.
• Overheating Analysis - London Plan Thermal modelling to assess and mitigate overheating risk in buildings, particularly for London Plan compliance.
• Water Efficiency Calculations Calculations to demonstrate compliance with Part G water efficiency requirements (typically 110 litres per person per day).
• Commercial EPC

Quantifiable outcome

• Over 250 BREEAM projects successfully completed
• +1 more outcomes

Named customers15 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

Feature1 record

Scale indicators3 records

Recent moves4 records

Expansion highlights4 records

Broad incumbents

• WSP: Global professional services firm with a substantial UK built-environment sustainability team offering BREEAM, energy, acoustics and ESG services as part of multi-disciplinary framework deals to enterprise developers.
• Ramboll: International engineering, design and consultancy company with a strong UK sustainability practice spanning BREEAM, energy strategy, and whole life carbon. Competes for the same enterprise developer mandates as Energist.
• Buro Happold: International engineering consultancy with a strong building performance and sustainability practice covering BREEAM, energy modeling, Passivhaus and ESG advisory. Competes with Energist on larger commercial and mixed-use schemes.
• BRE (Building Research Establishment): Originator of the BREEAM standard and a major UK provider of sustainability consultancy, testing and certification. Offers broader scope and deeper resources than Energist, but overlaps directly on BREEAM assessment and building performance services.
• Carbon Trust: Established UK advisory organisation offering carbon management, energy efficiency and built-environment sustainability consulting. Competes with Energist in ESG strategy and whole-life carbon advisory to developers and asset owners.
• Cundall: International multi-disciplinary engineering consultancy with a UK sustainability and building physics team offering BREEAM, energy modeling and ESG advisory. Overlaps with Energist on commercial and residential development work.

Direct peers

• Elementa Consulting: UK building services and sustainability consultancy delivering energy strategy, BREEAM, Passivhaus and MEP-related sustainability services to developers. Comparable in scale and specialism to Energist.
• Sustain Quality: UK specialist sustainability consultancy delivering BREEAM, SAP, SBEM, thermal bridging and acoustic services to housebuilders and contractors. Closely overlapping service portfolio and customer segments with Energist.
• AES Sustainability Consultants: Independent UK consultancy providing BREEAM, energy statements, overheating analysis and sustainability advice to residential and commercial developers. Comparable niche-scale specialist competing for the same housebuilder customers.
• Stroma Built Environment: UK-wide sustainability and energy consultancy offering SAP, SBEM, BREEAM, air leakage and acoustic testing. Directly comparable to Energist in service mix, customer base (developers and contractors), and geographic footprint.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/energistuk

Revenue estimate

Valuation estimate

Number of profiles

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 Energist