Hybrid Generation Systems

Combining the benefits of both the battery energy storage systems and our intelligent gas generation systems, we can offer a fully-hybridised package of measures that optimise your site’s electricity supply, maximising the potential financial and environmental savings.

Securing your energy supply will enable you to focus on your day-to-day activities and leave the energy to Ylem’s team of specialists.

Hybridised generation and storage solutions

Bringing together a unique package of measures, our hybrid approach to a site’s energy optimisation (behind or in front of the meter) combines the benefits from our generation and storage systems to lower costs, boost resilience and reduce emissions

These intelligent pre-packaged battery storage systems can boost a site’s resilience, storing energy that can also help avoid the use of costly peak-time tariffs and third-party charges by effectively time-shifting their demand. Furthermore, Ylem’s battery storage systems can also generate new sources of revenue by providing frequency response services to the grid at peak times.


Third-party charges

Third-party charges make over 50% of the cost of a commercial electricity supply invoice and these costs are forecast to continue rising in years to come.

During the peak times of the day –  between 4pm and 7pm Monday to Friday – the DUoS charges reach their highest level – with this being at its maximum during peak winter months. Furthermore, the three Triad periods will also have a large impact if electricity is imported during these times.

DUoS Band Charges
DUoS Charging Bands

As the above graphic shows, there can be a huge difference between the Red Band DUoS rate for peak-time electricity and the Green Band. Depending on the region and the time of year, it can be as much as nine times more expensive.

The wholesale cost element of a bill is unavoidable unless a company can generate its own energy, or simply reduce consumption. With many companies having already implemented energy efficiency measures, there’s opportunities for generation – of course depending on a site’s demand.

These third-party charges can, in many cases, be avoided and that’s where Ylem Energy can help ...

Typical I&C Customer Electricity Costs

How can Ylem's hybrid optimisation systems help?

With over three decades’ experience in smart generation, Ylem Energy specialises in delivering fully-financed smart and flexible energy generation systems that can optimise your site’s supply - helping lower energy costs, increasing reliability and even generating new sources of revenue.

How do we do this?

Ylem Energy can design, supply and install an optimal generation and storage system to ensure maximum benefit to meet the requirements of your site – whether this be in front of or behind the electricity meter.

Taking into account on-site generation from our gas system, plus other existing sources such as solar PV the stored energy can be used to avoid third-party charges during times of peak tariffs – which will result in significant cost savings.

The energy stored could also be used as a fast response to disruptions to your grid supply – providing immediate cover whilst standby generation systems come online.


Perfect for all types of site where energy supplies are essential, our hybrid generation and storage systems can deliver significant benefits to a wide-range of organisations. This typically would include (but not limited to):

  • Data centres
  • Healthcare
  • Food and drink
  • Manufacturing
  • Commercial sites.

Other Solutions

Whilst our innovative hybrid solution maximises benefits to your site, we can of course introduce individual generation and storage systems to meet your exact requirements and optimise your energy supply.

Find out more...

The MCPD – Medium Combustion Plant Directive

The Medium Combustion Plant Directive - or more simply MCPD – is legislation designed to improve air quality for new and existing combustion plant and it can affect generators with an electrical output from around 400kW (thermal input from 1MW up to 50MW).

The MCPD’s Emissions Limit Values (or ELVs) focus on the concentration levels of sulphur dioxide (SO2), oxides of nitrogen (NOX), and particulates in exhaust gases from affected plant – plus they require monitoring of carbon monoxide levels (CO), but don’t limit it.

This does affect existing diesel generators and onerous emissions abatement requirements mean that with their low NOX and Particulate matter, our gas-fired generation systems are the perfect answer to compliance as their emissions fall within the permitted ELVs and you’ll avoid a costly upgrade bill.

The cost for upgrading an existing diesel generator to comply with MCPD can be significant ...



Our MCPD-compliant gas generation systems can be provided fully financed as party of our behind-the-meter optimisation solutions

Comprehensive Offer

At Ylem Energy, we can offer a comprehensive package of services to encompass every aspect of a system - from an initial site survey and design, through to finance, installation, operation and maintenance...

Additional energy management services

With expertise in energy management and energy performance contracts, our dedicated team can also help work with you to identify other areas where energy savings can be made, with a range of services and finance options. Find out more...

Fully-financed or outright purchase

We offer our clients the option to purchase our systems outright, or through one of our finance options that includes our Dynamic Power Purchase Agreement (DPPA) that enables us to provide our customers with a fully-financed, comprehensive package that delivers real results without the need for their up-front capital expenditure.

Design, installation, operation and maintenance 

We can not only design and install your systems, but also provide you with a 24-7 operation and maintenance service to cover all of our systems. With a dedicated team of regionally-based engineers providing round-the-clock cover 365 days a year, our service and support is second to none.  Find out more...

Metering and compliance

We can install and manage customer metering systems. With remote monitoring and report generation, this can be used as a standalone solution for our smart generation assets or across a customer’s site to provide compliance and reporting services.

Find out more

To find out more about how Ylem Energy can help optimise your site's energy supply - in front or behind the meter - please click the button below to contact us.

Ylem Energy Limited
Edison House,
Daniel Adamson Road,
Salford, M50 1DT,
United Kingdom

Registered in England
No. 02152229

Ylem Power Limited
Registered in England
No. 11934674

Biogas Technology Limited
Registered in England
No. 02323287

The Association for Decentralised Energy




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