Biomass ORC

Biomass Organic Rankine Cycle 

Biomass ORC uses a fairly standard biomass boiler to heat a thermal oil, and is therefore cheaper than steam generating. It uses a similar process to a refrigeration cycle, causing the thermal oil to boil and turn into a gas to drive a turbine, which creates power, then when the gas cools it turns back into a liquid again to be re-heated. Once the process has used the heat it needs to generate power, the water then is circulated around your heating system and back to the boiler.

An Enogia Organic Rankine Cycle setup
An Enogia Organic Rankine Cycle setup

Biomass ORC benefits:

  • Lower capital cost makes payback quicker
  • Low maintenance requirement makes for cheaper running costs
  • Fewer moving parts and lower pressures in the biomass system makes for good reliability

Our ORC manufacturing partner is Enogia in combination with the Gilles industrial boiler range, which can run on very low grade fuel to give you the lowest running costs, combined with the best returns.

Gilles HPKI-R cut through
Gilles HPKI-R cut through
How it all goes together
How it all goes together

Quick return on investment due to Renewable Heat Incentive payments on the biomass heat produced, as well as another RHI payment on CHP (Combined Heat and Power)

Biomass only Biomass with ORC  
 RHI RHI CHP with 40°C waterRHI CHP with 45°C waterRHI CHP with 50°C water
Eligible thermal power [kWth]1000100010001000
Running hours6500650065006500
ORC net efficiency0.0%5.7%5.2%4.7%
Relative efficiency (compared to 20%)0.0%28.5%26.0%23.5%
Tier 1 Incomes (3.05 p/kWh)£93,513£66,862£69,200£71,537
Tier 2 Incomes (2.14p/kWh)£110,980£79,351£82,125£84,900
CHP efficiency incomes (4.42p/kWh)£0£81,881£74,698£67,516
Total Incomes RHI CHP£204,493£228,093£226,023£223,953

These are annual payments, which will be paid for twenty years: £228,093 x 20 = £4,561,860 and that’s not all. Because you are generating your own electricity, you get to keep it at a cost of around 6p per Kilowatt, saving on average 8p per Kilowatt on what your electricity currently costs you to buy from the grid. You also get hot water to heat a building or a swimming pool, or an industrial process.

The Renewable Heating Incentive (RHI) scheme has now ended and is only available to those who have signed up previously.

For further information, please contact Commercial Biomass Ltd on 01935 476927