Flex Assure Limited
Flex Assure is a UK not-for-profit that operates an independent compliance scheme auditing and certifying energy flexibility service providers against enforceable Codes of Conduct for industrial/commercial and domestic/microbusiness customers.
- Company typePrivate
- Founded2019
- HeadquartersLondon, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Flex Assure Limited does
Flex Assure Limited is a UK not-for-profit company limited by guarantee, established in May 2019 by the Association for Decentralised Energy (ADE), that operates an independent compliance scheme for energy flexibility service providers (FSPs) operating in Great Britain. Its core function is to set and enforce Codes of Conduct covering sales practices, contracts, technical due diligence, data protection, and dispute resolution, with member FSPs required to apply, undergo independent audit, and be listed on a public Members Register upon certification. The portfolio comprises two distinct codes: the Industrial and Commercial Code of Conduct (Version 4 / CC005), in operation since 2019, and the Domestic and Microbusiness Code of Conduct (HOMEflex), launched in October 2023 and supported by a December 2025 Domestic and Microbusiness Compliance Scheme, plus access to the Energy Ombudsman for unresolved complaints.
The scheme is backed institutionally by all six GB Distribution System Operators (National Grid Electricity Distribution, Northern Powergrid, SP Electricity North West, SP Energy Networks, SSEN, UK Power Networks), National Grid ESO (now NESO), and the NESO Power Responsive programme, with National Grid ESO also providing grant funding for I&C scheme modifications in 2023 and representation on Flex Assure's Board of Directors. A 19-organisation working group, including Carbon Trust, Centrica, Citizens Advice, Octopus Energy and OVO Energy, contributed to the HOMEflex development, and the HOMEflex project was shortlisted in the Net Zero Engagement category of the Utility Week Awards in 2023.
Flex Assure generates revenue through annual membership fees paid by FSPs, scaled by provider size and segment (I&C versus domestic/microbusiness); services to energy users are free. The operating model is sales-led but heavily ecosystem-driven, relying on DSO/NESO network promotion, the public Members Register, and direct application by providers. The organisation is small (1-10 employees, with a Business Development Assistant role advertised in June 2026) and operates from London under company number 11652552.
Flex Assure Limited firmographics
Firmographics- Name
- Flex Assure Limited
- Legal name
- Flex Assure Ltd
- Website
- https://flexassure.org
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Flex Assure is a UK not-for-profit that operates an independent compliance scheme auditing and certifying energy flexibility service providers against enforceable Codes of Conduct for industrial/commercial and domestic/microbusiness customers.
- Ownership category
- akta.pro rank
Flex Assure Limited industry classification
Industry- Product category
- Energy Compliance Services
- akta.pro primary industry
- Standards, Certification & Compliance (RECs/GOs, sustainability reporting) (EUAMANAJ)
- akta.pro secondary industries
- Audit & Assurance Services (BPAHABAA), Assurance & Verification of Sustainability Reports (Limited/Reasonable Assurance) (EUAHAJAI)
Keywords
Where Flex Assure Limited is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Flex Assure Limited business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Others
Revenue model
- Membership fees: Flex Assure is a not-for-profit company limited by guarantee. Membership fees apply to flexibility service providers joining the scheme. The fee depends on provider size and market segment served (I&C or domestic/microbusiness).
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Membership fees for flexibility service providers |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Flex Assure Limited product offering
Product offeringCore offering
Flex Assure operates an independent compliance scheme that audits and certifies flexibility service providers against codes of conduct for the UK energy market. The scheme sets enforceable standards covering sales practices, contracts, data protection, and dispute resolution for both industrial/commercial providers and domestic/microbusiness providers, maintaining a public Members Register of verified providers.
Product overview
Flex Assure is an independent compliance scheme for energy flexibility services providers, operating as a not-for-profit company limited by guarantee. The scheme offers a single unified portfolio centered on provider assurance through two distinct codes of conduct: the Industrial & Commercial (I&C) Code of Conduct Version 4 (CC005) for business flexibility providers, and the Domestic & Microbusiness Code of Conduct (HOMEflex) for household and small business providers. Both codes are enforced through independent audits, and the scheme maintains a public Members Register of verified providers. The scheme also provides dispute resolution support via the Energy Ombudsman for unresolved customer complaints.
Differentiator
Problem solved
Functional benefit
Brands
- HOMEFlex: A domestic energy flexibility initiative building on prior schemes and research, establishing standards protecting domestic and micro-business customers engaging with flexibility services.
Products and services
- Flex Assure Compliance Scheme A voluntary compliance scheme that audits and certifies flexibility services providers against codes of conduct, providing independent assurance to homes and businesses engaging in energy flexibility markets.
- Industrial & Commercial Code of Conduct (I&C Code) The Flex Assure Code of Conduct Version 4 (CC005) that sets enforceable standards for industrial and commercial flexibility services providers covering sales and marketing, technical due diligence, proposals, contracts, and complaints.
- Domestic & Microbusiness Code of Conduct (HOMEflex) A code of conduct for domestic and microbusiness flexibility service providers covering transparency in service offerings, fair contractual terms, protection of vulnerable consumers, clear complaints processes, and data protection standards.
- Members Register A public register of verified flexibility providers who have been audited and approved against the relevant Flex Assure Code of Conduct, including both industrial and commercial members and domestic/microbusiness members.
- Independent Dispute Resolution An independent dispute resolution process accessible through the Energy Ombudsman for customers who have complaints against Flex Assure scheme members that cannot be resolved through the provider's internal complaints procedure.
Quantifiable outcome
- 13GW of industrial & commercial flexible capacity by 2050
- +2 more outcomes
Companies that use Flex Assure Limited
Customer profileNamed customers9 records
Segments3 records
Ideal customer profiles3 records
Flex Assure Limited technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Flex Assure Limited partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and flagship.
- Scottish and Southern Electricity Networks (SSEN)coreSSEN partnered with Flex Assure on the HOMEFlex project - a domestic energy flexibility initiative funded by the Network Innovation Allowance (NIA). SSEN is a key partner in developing standards for domestic and microbusiness customers.
- Association for Decentralised Energy (ADE)coreFlex Assure was established by ADE as a compliance scheme for UK aggregators focused on demand-side response coordination. ADE provides organizational foundation and governance oversight through the Flex Assure Oversight Committee.
- Centre for Sustainable Energy (CSE)coreCSE partnered with ADE and SSEN on the HOMEFlex project, conducting qualitative research on consumer needs regarding flexibility market protections and providing practical advice on saving energy.
- All GB Distribution System Operators (DSOs)coreAll of Great Britain's DSOs financially supported the Domestic and Microbusiness Compliance Scheme launch. These include National Grid Electricity Distribution, Northern Powergrid, SP Electricity North West, SP Energy Networks, SSEN, and UK Power Networks.
- NESO Power Responsive ProgrammecorePower Responsive coordinates demand flexibility nationally and financially supported the Domestic and Microbusiness Compliance Scheme. Scheme membership is flagged on the Demand Flexibility Service Registered Providers List.
- HOMEFlex Working Group (19 organizations)flagshipWorking group comprised 19 organizations including Carbon Trust, Centrica, Citizens Advice, National Energy Action, Octopus Energy, OVO Energy, and renewable energy associations. Contributed to code of conduct development for domestic flexibility.
Scale indicators4 records
Recent moves6 records
Expansion highlights6 records
Flex Assure Limited competitors and assessment
Company assessmentPeers
- Citizens Advice: National consumer advocacy body that participated in the HOMEflex 19-organization working group. Adjacent participant in consumer protection standards-setting for energy markets.
Others
- Energy Ombudsman: Statutory dispute resolution body that Flex Assure Scheme Members are required to engage with for unresolved complaints. Ecosystem partner providing backstop consumer protection for Flex Assure's scheme.
- Association for Decentralised Energy (ADE): Parent/incubating trade association for decentralised energy in the UK. Established Flex Assure in 2019 and continues to provide governance oversight; ecosystem participant rather than competitor.
- Energy UK: UK energy industry trade association representing generators, suppliers, and network operators. Ecosystem participant operating in overlapping industry spaces but not running a compliance scheme itself.
Broad incumbents
- BSI (British Standards Institution): UK national standards body issuing standards across sectors including energy and sustainability. A much larger, broader standards-setting incumbent that could potentially absorb or rival Flex Assure's scheme-level certification role.
- TrustMark: Government-endorsed quality scheme covering trades across multiple sectors including energy retrofits. Broader quality assurance incumbent that overlaps with Flex Assure's trust-building mission in domestic energy markets.
Direct peers
- Renewable Energy Consumer Code (RECC): Voluntary consumer code for renewable energy installation providers covering sales, contracts, and complaint handling. Closely comparable model to Flex Assure's Codes of Conduct in a related clean-energy segment.
- Microgeneration Certification Scheme (MCS): Industry-led certification scheme for low-carbon technology installers with a public register and installer standards. Operates a directly analogous compliance/certification model in distributed energy.
Emerging players
- HIES (Home Insulation & Energy Systems Quality Assured): Consumer protection scheme for home insulation and renewable heating systems. Smaller-scale compliance scheme in the domestic energy services segment, addressing similar consumer protection gaps.
- Heat Trust: Voluntary consumer protection scheme for heat networks in the UK. Adjacent compliance scheme in a different decentralised energy segment, sharing the voluntary code-based model used by Flex Assure.
Market position
Strengths1 record
Weaknesses1 record
Competitive moat5 records
Key risks2 records
Key highlights7 records
Customer concentration
Flex Assure Limited social profiles
Digital presenceFlex Assure Limited compliance and trust
Trust signalCompliance1 record
Flex Assure Limited financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flex Assure Limited leadership team
Management profileNumber of profiles
Profiles2 records
Flex Assure Limited funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flex Assure Limited M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Flex Assure Limited
What does Flex Assure Limited do?
Flex Assure operates an independent compliance scheme that audits and certifies flexibility service providers against codes of conduct for the UK energy market. The scheme sets enforceable standards covering sales practices, contracts, data protection, and dispute resolution for both industrial/commercial providers and domestic/microbusiness providers, maintaining a public Members Register of verified providers.
Is Flex Assure Limited a public or private company?
Flex Assure Limited is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was Flex Assure Limited founded?
Flex Assure Limited was founded in 2019. It employs 1 to 10 people.
Where is Flex Assure Limited based?
Flex Assure Limited is headquartered in London, United Kingdom, in the Europe region.
How does Flex Assure Limited make money?
One revenue line is on record: membership fees.
Who are Flex Assure Limited's main competitors?
Citizens Advice is listed as a peer. Others are Energy Ombudsman, Association for Decentralised Energy (ADE) and Energy UK. Broad incumbents are BSI (British Standards Institution) and TrustMark. Direct peers are Renewable Energy Consumer Code (RECC) and Microgeneration Certification Scheme (MCS). Emerging players are HIES (Home Insulation & Energy Systems Quality Assured) and Heat Trust.
Does Flex Assure Limited have an API?
No public API is recorded for Flex Assure Limited.
What industry is Flex Assure Limited in?
Flex Assure Limited's product category is Energy Compliance Services. Its primary akta.pro industry code is EUAMANAJ, Standards, Certification & Compliance (RECs/GOs, sustainability reporting), with a secondary code of BPAHABAA, Audit & Assurance Services.