John Sisk and Sons, a prominent construction firm, collaborated with Solaris Energy to engineer a pioneering Mobile Energy Plant (MEP) for the site welfare facilities at Quintain’s Wembley Park development in London. This project, awarded the Non-Domestic Air Source Heat Pump Project of the Year at the 2025 National ACR & Heat Pump Awards, leveraged Kronoterm’s WPG heat pump and a bespoke KSM Pro controller to deliver a sustainable, high-efficiency solution. Solaris Energy, with engineering support from ADR Consulting, designed the MEP, approaching Kronoterm for a custom setup that was uniquely achievable with our technology, setting a new standard for eco-conscious construction.

The Objective

Traditional modular cabin welfare facilities rely on energy-heavy electric heaters, air conditioners, and point-of-use water heaters, resulting in high energy costs, significant carbon emissions, and post-project waste from discarded equipment. John Sisk and Sons sought an innovative, reusable solution to minimise energy use, reduce the carbon footprint, and provide simultaneous heating and cooling at Wembley Park, with the flexibility to redeploy the system for future projects.

Custom Solution

Solaris Energy spearheaded the design and engineering of the MEP, selecting Kronoterm’s WPG heat pump for its exceptional efficiency and adaptability. Recognising the need for a tailored control system, Solaris approached Kronoterm to develop a bespoke KSM Pro controller with custom coding to optimize the defrost process, a solution simply not available from other manufacturers. This collaboration, supported by ADR Consulting, resulted in a highly efficient, portable MEP housed in a 20-foot container. Key features include:

• Portability for Reuse: The 20-foot container design allows for easy transport, extending the system’s lifespan across multiple projects.

• Self-Contained System: All components are integrated within the container, enabling rapid deployment and maintenance.

• Energy Efficiency: The WPG heat pump harnesses renewable air and waste heat, significantly reducing energy consumption for heating and cooling.

• Simultaneous Heating and Cooling: The MEP meets the site’s dual requirements through low-flow-temperature radiators and fan coils.

• Waste Heat Recovery: Captures heat from cooling processes to provide additional heating or hot water, enhancing efficiency.

• Preheated Hot Water: Reduces energy demands for water heaters and eliminates local legionella prevention needs.

• Bespoke KSM Pro Controller: Custom-coded for this project, the KSM Pro optimises the defrost process, ensuring reliable performance in varying conditions, a feature uniquely enabled by Kronoterm’s advanced technology.

• Remote Monitoring: Cloud.Kronoterm enables real-time performance tracking and diagnostics, ensuring operational reliability.

Engineering and Integration

Solaris Energy’s thermal modelling optimised the MEP for low-flow temperatures, reducing electrical consumption. The system incorporated radiators and fan coils for efficient heating and cooling circuits. 3D modelling ensured precise component placement, and a tunnel container with an access door facilitating ongoing maintenance. The bespoke KSM Pro controller, with custom coding for the defrost process, was critical to ensuring the WPG heat pump’s performance in the demanding construction environment, a solution made possible only through Kronoterm’s engineering flexibility.

Achievements

The MEP, engineered by Solaris Energy and powered by Kronoterm’s WPG heat pump and bespoke KSM Pro controller, delivered outstanding results, earning its 2025 award:

• Cost Savings: The MEP has reduced Sisk’s site energy bill by around £10,000 per month even though energy prices have risen.

• Carbon Reduction: The solution has achieved a reduction of 14 tonnes of carbon so far this year.

• Infrastructure Efficiency: The MEP lowered the site’s leased step-down transformer capacity from 2MW to 1.5MW, saving an additional £120,000 on set up and leasing costs to date.

• Reusability: The portable design supports redeployment to future projects, minimizing waste and maximising value.

The WPG heat pump’s efficiency, enhanced by the custom KSM Pro controller, ensured seamless operation, with features like IAHTM technology for up to 30% improved efficiency and NMS™ noise control for quiet performance.

Conclusion

The Mobile Energy Plant at Wembley Park, engineered by Solaris Energy with Kronoterm’s WPG heat pump and bespoke KSM Pro controller, showcases the power of customised, sustainable technology in construction. By delivering significant energy savings, carbon reductions, and reusability, this award-winning solution redefines industry standards. Kronoterm’s ability to provide a tailored control system, unachievable by other manufacturers, underscores our commitment to innovation and collaboration with partners like Solaris Energy.

For more details on Kronoterm’s WPG heat pumps or custom solutions for your project contact us today.