Combined Heat and Power Units



Generators and Combines Heat & Power (CHP) units use natural gas to power an engine that is primarily designed to generate electricity through an alternator. This alone can lead to considerable savings on your electricity bills.
CHP units are designed to then capture waste heat from the engine and the exhaust gases and convert this into useable heat. This heat can be used for low temperature hot water, thermal oil or even to support steam boilers.
In capturing this waste heat, CHP units can have efficiencies up to 85%, which can amount to huge savings on your energy costs, often up to 40-50%.
NerG offer bespoke generator & CHP solutions for clients who have high electricity bills and are looking for ways to save money. 


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- Generate savings of up to 40-50% of electricity and gas bills
- Possible due to lower cost of natural gas
Energy Security
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Energy Security
- By generating your own electricity, organisations can protect themselves against price volatility and guarantee a security of supply
- Generating your own electricity can also help reduce DUoS charges
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- The efficiency of CHP systems can be more than double traditional means of power production
- CHP can therefore reduce carbon emissions by up to 30% compared with traditional energy sources
Enhanced Capital Allowances
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Enhanced Capital Allowances
- CHP is a recognised Energy Saving Technology, and as such, installations that meet efficiency criteria are eligible for ECA’s.
- This enables businesses to write off 100% of their investment against their taxable profits
Climate Change Levy Exemption
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Climate Change Levy Exemption
- If the CHP unit meets certain efficiency criteria, the fuel used is eligible for CCL exemption
- On a 1MW CHP unit, this equates to a reduction in fuel input costs of circa 10-12%


1. Engine 

Industry leading engine burns natural gas and drives a generator.

2. Electricity

The generator creates electricity at between 35-40% efficiency.

3. Engine Heat

Approximately 20% of heat generated is recovered from the water that is cooling the engine jacket.

4. Exhaust Heat 

Another 20% of heat is captured through a heat exchanger in the exhaust gases.

Combined Heat And Power Unit

5. Heat Use

This heat can be used for heating water, thermal oil or for generating steam.

6. Grid Integration 

This unit sits alongside your existing grid connection with no need to change this.

7. Automated

The CHP unit looks after itself, modulating to your on site requirements.

8. Safety Features

The CHP units are installed with G99 relays to protect grid based workers from backfeeding.

They are also fitted with gas, Co2 and heat safety systems.


Edinburgh College case study
Edinburgh College CHP case study


Plastics manufacturer, Shropshire

Current energy usage:

Gas – 2,600,000 kWh

Electricity – 8,826,604 kWh

Proposed solution: 1MW CHP

Power produced – 7, 575, 499 kWe

CHP Heat used – 780,000 kWt

Savings per year: £411,283 (after maintenance)

Potential return: 2.14 yrs

Food processing factory, Lincolnshire

Current energy usage:

Gas – 4, 961,872 kWh

Electricity – 7324,247 kWh

Proposed solution: 1MW CHP

Power produced – 5, 784,159 kWe

CHP Heat Used – 1, 255,333 kWt

Savings per year: £266,539 (after maintenance)

Potential return 3.25 yrs

Hatchery, Warwickshire

Current energy usage:

Gas – 1, 612, 025 kWh

Electricity – 3, 318,240 kWh

Proposed solution: 500 kWe CHP

Power produced – 3,120,134 kWh

CHP Heat Used – 1,370,221 kWh

Savings per year: £180,128 (after maintenance)

Potential return: 2.78 yrs

Leisure Centre, Norfolk

Current energy usage:

Gas – 637,089

Electricity – 1,132,094

Proposed solution: 105kWe Full CHP

Power produced – 608,268kWh

CHP Heat used – 368,096 kWh

Savings per year: £33,296 (after maintenance)

Potential return: 4.96 yrs

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