Abstract
The Performance of model co-generation system for greenhouse was estimated and evaluated assuming a strawberry farmer of Nasu district in Japan. The application evaluation of a model co-generation for greenhouse with CO_2 fertilization was performed using our previous experimental data. As a result, it was found that it is possible to supply heat, electricity and CO_2 required for a greenhouse without the concentration of harmful gases exceeding guidelines for man by ventilating with the flowrate of 692m^3/h. Finally, we estimated the costs of the cogeneration system for 1 month. But it was high because the wood pellets were more expensive that the heavy fuel oil.