How do I find a reputable supplier or installer in the UK?

Start with industry-recognized manufacturers and distributors

Direct options include Sunamp, Caldera, and Tepeo, which produce thermal energy storage systems and maintain networks of certified installers. These companies provide technology for residential and commercial uses, from compact heat batteries to large-scale thermal storage solutions. Contact them directly for installer referrals or check their websites for affiliated partners.

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Step-by-step supplier selection process

1. Verify certifications and memberships

Look for MCS (Microgeneration Certification Scheme) accreditation for renewable energy systems and check if installers belong to Thermal Storage UK, the industry body that supports smart thermal storage. Members like Caldera use vacuum-insulated heat cells, while Sunamp uses phase-change materials – both require specialist installation.

2. Compare system types and compatibility

• Residential: Sunamp's compact heat batteries (suitable for retrofits), Tepeo’s Zero Emission Boiler (gas boiler replacement)
• Commercial: Caldera’s industrial-scale heat cells, Tesla Powerwall integration for hybrid thermal-electrical storage (via approved partners like Thermal Earth)
  Ensure systems are compatible with your existing infrastructure (heat pumps, solar PV, district heating).

3. Request case studies and references

Reputable installers should provide:

• Energy bill reduction claims (e.g., Sunamp’s 75% savings)
• Lifespan data (40,000 cycles/50 years for some systems)
• Grid service examples (Tepeo’s demand-side response functions)

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Key considerations for UK buyers

✔️ Financial factors

• Funding schemes: Check for ECO4, Home Upgrade Grant, or Local Authority schemes
• Tariff alignment: Tesla Powerwall users can access Octopus Energy’s 8p/kWh export rates (subject to eligibility)

❌ Common mistakes

• Undersizing storage: Precisely calculate thermal load – Tepeo’s 40kWh ZEB suits 3-4 bed homes
• Ignoring smart controls: Ensure compatibility with time-of-use tariffs and grid balancing services
• Overlooking space: Sunamp units need 1/3 the space of traditional cylinders

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Recent UK developments

The 2023 Heat Pump Acceleration Plan prioritizes thermal storage integration. Installers certified under the Boiler Upgrade Scheme often have thermal storage expertise. Thermal Storage UK reports increased use in new-build projects due to Part L building regulation updates.

Pro tip: Use the MCS installer search tool with filters for “thermal storage” or “heat batteries” to find local specialists. For commercial projects, consult Thermal Earth’s nationwide distribution network for industrial-scale projects.