J R O Griffiths

Heatpump Heat / Chill has significant projected income over the 20 year Government Tariff and a 4 year pay back

“Calibrate have delivered a system that operates seamlessly alongside my existing technology while meeting timeframes with great communication. Their team have managed each step of the process exceeding expectations and I look forward to working with Calibrate for the 20yr duration of the tariff. Calibrate are a great solution for businesses trying to add another undisruptive income stream.”

Robin Griffiths

Intelligent Hands Off Heatpump Systems

The Introduction.

JRO Griffiths Ltd based in Shropshire process 36,000 tonnes of potatoes per annum at their Barratts Field Farm Plant. A 3992kW Heat Chill Heatpump has been installed with 30,000km of in-ground pipework to service: the pre-heating of the air onto their Alvan Blanche Grain Dryer, warm water for the potato washer, warming of the grading shed and washdown, as well as Heat Chill Box drying floor.

The Process.

This solution is fully automated to provide simultaneous heating and chilling, maximising efficiency via the remote access control system. The chilling by-product achieves 80% of the annual kW usage as a secondary back up to the existing chillers in the 12 potato stores as well as pre chilling and conditioning the grain prior to storage.

The Figures.

  • £9.7 million of projected income and savings with the 20 year Government Tariff
  • A 4 year pay back
  • 35°c at 350% heating efficiency
  • 0°c at 300% chilling efficiency
  • Total energy efficiency of 650%

The Conclusion.

80% free chilling while there is a heating demand down to 0°c for the potato and chill stores results in increased  savings. An intelligent bespoke Calibrate Controller ensures that the system is operated remotely for all tariff monitoring and peace of mind, a true ‘Hands-off Heatpump Heat Chill solution’.
The Calibrate 20 year maintenance and extended warranty package means that there is no unexpected expenditure for the lifetime of the tariff.

Calibrate Energy Engineering is a leading provider of intelligent ‘hands off ’ heatpump systems, designed to provide maximum energy and cost savings for commercial businesses.


Our expertise lies in harnessing the natural energy resources surrounding a building to provide clients with reliable, low-cost heating for commercial applications. We do this through an integrated Heatpump system which is both affordable and worry-free, with long term maintenance cover available for peace of mind. Our bespoke control system enables government tariffs to be maximised and the system can be easily integrated alongside other renewables

Maintenance and Extended Warranty

Calibrate understands the importance of peace of mind, we offer our clients a 20 year warranty package ensuring there are no surprises with our technology. The bespoke Control Package remotely manages the Heatpump, integrating it with other renewables if they are present and enabling a ‘hands off’ approach as well as real time tariff generation and power consumption readings.

Demand Side Response (DSR)

DSR financially incentivises energy users to increase or reduce on demand nonessential energy usage at times of peak or low demand.

Why is demand response needed?

The National Grid has to maintain a certain level of energy production capacity above actual demand. DSR is designed to provide the margin, either by increasing or decreasing site energy use.

What are the benefits of demand side response to you?

The primary business arguments for DSR are financial renumeration and sustainability. DSR not only allows businesses to avoid higher energy prices and receive renumeration during times on and off peak demand.

*All formulas and calculations are derived from industry suppliers and MCS guidelines, it is advisable to have the calculations and formulas checked by a certified mechanical engineer, and as such, Calibrate Inc. ltd (Company # 08277206) will not be held liable for any incorrect formulas or calculations or any accidental misrepresentation. **Time and seasonal variables dependant.