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How much does it cost to get a thermal energy storage system?
Is installing a thermal energy storage system expensive?
For most UK homeowners, thermal energy storage costs around £1,400 to install for a domestic thermal store, while larger commercial systems vary significantly based on scale and temperature requirements. Recent data shows domestic installations typically take 1 day, though costs depend on system size, type, and integration with existing heating infrastructure.
Key Cost Factors
- System type: Basic thermal stores for homes average £600-£1,400 installed[^1], while industrial-grade systems (e.g., molten salt) require more significant investment but offer grid-scale savings.
- Scale: Small businesses might spend £5,000-£8,000+ on integrated systems, comparable to mid-range battery storage costs.
- Efficiency: High-temperature systems (up to 1,300°C) deliver higher savings (30-150% monthly reductions vs. fossil fuels) but require specialised installation.
Latest UK Developments
A 2025 report confirmed thermal storage cuts industrial energy costs by 30-150% compared to gas heating, with Germany-specific data showing 30% savings (applicable to UK manufacturers due to similar energy prices). The technology is particularly effective for industries like glass production and food processing.
Practical Considerations
Pros
- Immediate savings: Reduces reliance on peak-time electricity tariffs.
- Grid support: Helps businesses participate in demand-response programs.
- Decarbonisation: Replaces gas boilers without major infrastructure changes.
Common Mistakes
- Oversizing: Installing systems larger than needed increases upfront costs.
- Poor integration: Failing to match storage capacity to renewable generation (e.g., solar panels).
- Neglecting maintenance: Sediment buildup reduces efficiency over time.
Recommendations
- Homeowners: Start with a £1,400 thermal store if already using renewable heating.
- Small businesses: Consider modular systems that scale with demand.
- Check grants: Explore UK government schemes for green heating incentives.
Cost Comparison Table
| System Type | Typical Cost Range | Best For… |
|---|---|---|
| Domestic store | £600-£1,400 | Homes with solar thermal |
| Medium commercial | £5,000-£15,000 | Farms, workshops |
| Industrial | £100,000+ | Factories, large facilities |
Note: Exact pricing requires professional assessment as of 2025, with new materials and regulations continually impacting costs.