Contract and payment protection
The HIES framework
- Installer vetting and accreditation
- Deposit and stage-payment protection, subject to scheme terms
- Insurance-backed guarantee arrangements
- Independent mediation and dispute-resolution routes
Our accreditations
Independent standards behind every REST installation.
Accreditations are more than logos. They set expectations for technical quality, accurate proposals, consumer protection and regulated finance conduct.
Scheme scope and eligibility can vary by product and project. REST will confirm the protections that apply within your quotation and contract documents.
Certified installationRecognised technical standards
Validated proposalsClearer performance estimates
Consumer protectionIndependent support routes
Regulated financeCredit-broker conduct standards
Protection around the decision
Your money and your proposal figures should both stand up to scrutiny.
HIES and EPVS address different parts of the customer journey: contractual protection and independent confidence in the numbers used to explain a system.
Independent confidence in the numbers
The EPVS framework
- Review of calculation and proposal processes
- Recognised methodologies for performance estimates
- Reduced risk of misleading savings projections
- Independent checks intended to support clearer customer decisions
Always review your quotation, contract, certificates and scheme documents. They confirm which protections apply to the specific installation.
Independent verification
Seven independent accreditations, each one checkable in minutes.
REST holds accreditation across MCS, HIES, EPVS, FCA regulation, CTSI, TrustMark and Flexi-Orb. Use the official registers and links above to check membership, permissions and the current scope of each organisation. REST can also explain which certification and protection documents you should receive during your project.
Check the register
Ask REST what appliesVerify the business name, registration details and relevant work category before relying on a scheme or permission.
Accreditation questions
Clear answers about certification and protection.
These answers explain the general purpose of the schemes. Your contract documents should confirm the exact protection attached to your project.
They provide independent standards for technical work, customer information, finance conduct, performance estimates and dispute resolution. The exact protection depends on the scheme and the contracted project.
An MCS certificate, or an accepted equivalent, is normally required by energy suppliers when confirming eligibility for Smart Export Guarantee payments. The supplier also applies its own tariff and metering requirements.
Subject to the scheme rules and the installation being correctly registered, HIES can provide protections relating to deposits, stage payments, insurance-backed guarantees and independent dispute resolution.
EPVS focuses on the processes behind energy-performance, generation and savings calculations. It is intended to reduce incorrect or misleading projections and improve confidence in proposal figures.
REST UK acts as a credit broker, not a lender. Applicable finance activity must follow FCA conduct requirements, and any finance remains subject to status, affordability and lender approval.
Not necessarily. Accreditation scope, product eligibility and available consumer protection can vary. Your quotation, contract and scheme documents should confirm which protections apply to the specific project.
Ask about certification
Understand the standards and protection behind your proposal.
Share your question with the REST team. We can explain the certificates, warranties and consumer-protection documents relevant to the project.