CDM – Executive Board
“Tool to determine the baseline efficiency of thermal or electric energy generation systems”
I. SCOPE, APPLICABILITY AND PARAMETERS
For the purpose of this tool, the following definitions apply:
Energy generation system or system. The term system refers to a facility that generates electricity or
thermal energy from combustion of fuels. In case of electricity generation, the term system refers to the
entire power plant including all necessary equipments, such as boiler, turbine, and generator as well as
auxiliary equipment such as fuel processing systems, water conditioning systems, cooling tower, etc. This
could include steam turbine generators or gas turbine generators or combined cycle power plants. In case
of thermal energy generation, the term system includes all systems that produce thermal energy, such as
steam boilers, fluid heaters, etc. The term energy generation system should include all auxiliary
equipment, such as the fuel processing system, the water conditioning system etc.
Load. Load refers to the output of the energy generation system at which the system is operated during
efficiency determination tests. It is expressed in kW or MW.
Efficiency. Efficiency is defined as the net quantity of useful energy generated1 by the energy generation
system per quantity of energy contained in the fuel fired. In case of boilers that are used only for thermal
energy generation (and not for power generation), the efficiency is defined as the net quantity of useful
heat generated per quantity of energy contained in the fuel fired in the boiler. In case of power plants
producing only electric power (not cogeneration plants), the efficiency is defined as the net electricity
generated by the power plant as a whole divided by the quantity of energy contained in the fuel fired.
Load – Efficiency function. A mathematical function representing the efficie