HGY generators: 20 MW for the UK

This marks another milestone for the series, the flagship of the Spanish manufacturer’s genset lineup, introduced just over a year ago in partnership with Yanmar. Himoinsa is supplying ten HGY Series generators, with a total critical power output of 20 MW in the UK. The ten units installed work in synchronisation with each other and with the grid under a smart control system, which ensures stable and safe operation at all times. Real-time remote monitoring, combined with communications redundancy and fixed load export, allows the plant to maintain a constant flow of electricity without interruptions.

The HGY Generators will run with HVO100

This gensets will operate exclusively with HVO100, which allows the power plant to guarantee NOx emissions below 190/Nm³, reducing them to a minimum thanks to the existence of an SCR and a class-leading power density of up to 37.9 kWm/L.

“HIMOINSA has already supplied equipment for the capacity market in the United Kingdom, including both diesel and gas generators, but with this project we are emphasising the maximum performance and efficiency of HGY generators with Yanmar engines. We are convinced that we are providing our customer with a complete solution. Equipment designed with the latest technology, guaranteeing low emissions and maximum performance. Without a doubt, this is one of the most competitive solutions currently available in the power generation sector for mission-critical projects,” explains Clive Dix, Managing Director of HIMOINSA Power Solutions in the United Kingdom.

DEFRA compliants

The HGY generators has also been designed to comply with the most demanding environmental regulations, such as the Mid Combustion Plant regulation adopted by DEFRA (Department for Environment, Food & Rural Affairs) in the United Kingdom. This regulation applies to generation plants between 1 MW and 50 MW, especially those that can operate more than 500 hours per year.

For exhaust gas treatment, the generator sets incorporate a latest-technology Selective Catalytic Reduction system. The SCR system installed in the HGY Series is integrated with the engine’s electronic control unit, allowing real-time monitoring of parameters such as temperature, pressure and NOx concentration. This connectivity ensures comprehensive process control, reduces the risk of incidents and extends the service life of components.

The combination of SCR with the exclusive use of HVO100 makes this power plant a benchmark: not only does it meet the most rigorous sustainability standards, but the plant also benefits from exceptional power density, reaching up to 37.9 kWm/L, which means a lower carbon footprint, greater efficiency in the use of resources and a significant reduction in life cycle costs.

Advanced acoustic engineering

The project required an advanced acoustic solution. The HGY Series incorporates the latest technology of HiAcoustic solutions, allowing soundproofing levels to be set at 80 dB(A) at maximum output. This flexibility ensures that the plant can adapt to the strict acoustic requirements of the British environment, minimising its impact on the local community and complying with the highest environmental standards.

To this end, each generator set has been designed with acoustic panels of different densities on the walls, ceiling and floor, using mineral wool and specialised foams that effectively absorb sound waves. In addition, the exhaust silencers integrated into the system guarantee a reduction of between 30 and 45 dB, keeping noise under control even during peak operation.

The system is completed with optimised air flow, channelled through dual-module ventilation and self-regulating remote cooling, which adjusts the flow rate according to thermal requirements. This design not only ensures maximum efficiency in heat dissipation but also reduces the noise level associated with air movement and auxiliary load consumption.

A Yanmar Engine is the Heart of the HGY Generators

The Yanmar engine is developed to offer quality, durability and high performance under the most demanding conditions. These engines feature common-rail injection systems, as well as an advanced piston head design and comprehensive fluid analysis that optimise combustion and improve efficiency. The ECU allows for start-up in less than eight seconds and ensures compliance with class G3 of the ISO 8528-5 standard, making the installation a solution with immediate response capacity for any critical power need.

In addition, the ECU incorporates intuitive diagnostic software that enables remote monitoring and predictive maintenance, facilitating comprehensive plant management and increasing operational availability.

As part of this integrated solution,HIMOINSA has assigned a Project Commissioning Engineer to this project, who supervises the arrival of the generator sets and their commissioning at the facilities. HIMOINSA’s role was not only direct technical supervision, but also provided ongoing specialized support, resolving any operational adjustments and acting as a point of coordination between all parties involved.

The design of the power plant in the United Kingdom places special emphasis on ease of access and comprehensive maintenance: up to 500h for oil changes and 30,000h for major overhaul.

Features

• 10 HGY Series units, 20 MW of continuous critical power
• NOx emissions below 190 mg/Nm³
• Class-leading power density: up to 37.9 kWm/L
• SCR system
• Acoustic solutions with configurable levels of 80 dB(A)
• Exhaust silencers: reduction of between 30 and 45 dB
• Optimised airflow and self-regulating ‘V’ arrangement cooling
• Woodlands Power, local strategic partner, for comprehensive equipment installation
• 360º maintenance: accessible architecture and Plug & Play solution
• Yanmar engines: start-up in less than 8 seconds, maximum reliability
• 24/7 connectivity and control: remote monitoring and uninterrupted operation
• 20 MW of continuous power | Sustainable, reliable and ready for mission-critical applications