A power system has three generators: Generator A has a heat…
A power system has three generators: Generator A has a heat rate of 8 mmBTU/MWh, a fuel price of $3.5/mmBTU, a variable O&M cost of $4/MWh, and a capacity of 10 MW; Generator B has a heat rate of 11 mmBTU/MWh, a fuel price of $6/mmBTU, a variable O&M cost of $6/MWh, and a capacity of 15 MW; Generator C has a heat rate of 9 mmBTU/MWh, a fuel price of $10/mmBTU, a variable O&M cost of $10/MWh, and a capacity of 10 MW. All the generators have zero fixed costs. Find the marginal cost of these generators and the system lambda when the electricity demand is 30 MW.