Despite the fact that combined heat and power has been around for a long time,  it’s not really universally well-known. We’ve published a few posts about CHP but this one is focused on these threeCHP case studies. These studies show just how effective a CHP unit can be when a large energy user wants to reduce costs and their carbon footprint. 

CHP or cogeneration is the process of producing usable heat and electricity at the same time. CHP is a highly efficient process that captures and utilises the heat that is a by-product of the electricity process. You will see that in the three CHP case studies in this post!

In generating heat and power simultaneously, CHP can reduce carbon emissions by up to 30% in comparison to the separate means of conventional generation with a boiler and a power station.

We wanted to make this post as there is a distinct lack of existing combined heat and power case studies online and we think if more people knew about just how efficient CHP can be, businesses all across the UK would be very interested in getting a unit of their own! We hope these CHP case studies will help you get a better understanding of just how effective CHP can be!

 

 

3 CHP case studies

 

Case study 1

 

A hotel in Northumberland wanted to reduce their carbon footprint and their energy costs. So, they looked at a combined heat and power unit. The hotel already had an old and inefficient heating system that they used to produce hot water. They not only needed this hot water for the hotel rooms but also their spa. 

The aged heating system was being used to power and heat a jacuzzi and large swimming pool. The need for a more effective heating system was clear. 

The site had a full survey and after a consultation they decided on which CHP unit they wanted to purchase and implement. The unit chosen would produce 99% of the building’s electrical requirements and will offer simple payback within 1.8 years! 

An overview

How much did it cost?: £185,000

How long did it take for a payback?: 1.8 Years

How much CO2 did it save?: 429,741 kgs per year

 

 

Case study 2

 

The second case study involves a golf club looking to supply a new build with hot water. This new build was going to have an exceptionally high hot water demand. They had heard about CHP and received a recommendation from a consultant. After the consultant had advised which unit was the most appropriate for the golf club they continued the production of the building and had the CHP uni installed.

Their CHP unit is now fully installed, providing around 30% of their electrical demand and providing 60% of their high hot water demand. In this instance the club could’ve made much greater savings with a larger unit.

An overview

How much did it cost?: £39,000

How long did it take for a payback?: 3.6 years

How long did it take to install order to commission?: 6 weeks

 

 

Case Study 3

 

Last but not least, the final case study shows just how much a large manufacturer can benefit from using a CHP unit. A large plastic mouldings company became interested in combined heat and power after they learned of the potential savings they could make by implementing a CHP unit. 

The company has a 24 hour demand on their premises due to the large amount of machinery needed to produce their products. The CHP unit they chose supplies 75% of their electrical requirements and as they didn’t require hot water, an absorption chiller turns the heated water back into cold water, feeding back into the existing chilled water system. 

An overview

How much did it cost?: £970,000 

How long did it take for a payback?: 1.8 years

How long did it take to install order to commission?: 5 months 

How much CO2 did it save?: 276,840kgs per year

 

We hope that these 3 CHP case studies have helped increase your knowledge and given adequate examples of how effective CHP can be! If you would like to start your journey toward energy security and yearly savings click the button below and get in touch with us, we’d love to hear from you! 

Or if you’ve realised that CHP isn’t the right choice for your, consider either Solar PV or get on top of your energy tariff

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