Reduces global primary energy demand.
May decrease electricity demand by displacing electric forms of heating with district heating.
May increase total consumption of heating oil and natural gas.
Could increase the share of renewable energy sources in the energy mix if biomass CHP systems are deployed.
Likely to reduce global CO2 emissions.
Avoid emissions of harmful pollutants, especially in built areas.
Likely to increase the cost of the energy transition as it requires deployment of district heating networks and CHP technologies as well as, in principle, building efficiency improvements.
In a Combined Heat and Power (CHP) plant, the energy from a fuel is used to generate both electricity and heat. Thermodynamically, the heat is recovered from the waste heat of the electricity generation process resulting in a higher overall energy efficiency than can be achieved if the processes are operated separately (CHP plants can capture over 80% of the total energy in the fuel whereas typical advanced thermal power plants only capture about 40-50% of the energy as electricity).
• Requires district heating infrastructure (network) that can be capital intensive to deploy, particularly as a retrofit.
• Is more effective with high efficiency building stocks that can manage with modest heating water temperatures.
Next tables contain the assumptions that have been introduced in the Centralized cogeneration model of the calculator.
|CO2-eq. emissions [kgCO2-eq./MJfuel]||CCGT-CHP||0.0679|
|Deposited waste [UBP/MJfuel]||CCGT-CHP||0.136|
|Specific investment [CHF2010/kWe]||CCGT-CHP||1127||1046||942|