Optimal Economic Modelling of Hybrid Combined Cooling, Heating, and Energy Storage System Based on Gravitational Search Algorithm-Random Forest Regression

Table 5

Costs of the MG parameter under the two scheduling methods.

Parameters		Cost ($/day)
		Summer		Winter
Unit fuel cost		With heat pump and cold storage	GSA-RFR optimization	With heat pump and cold storage	GSA-RFR optimization
	Gas turbine	220.9	275.2	1241	947
	Fuel cell	39.4	0	209	245
	Gas-fired boiler	89.6	263.9	24.5	0
Energy interaction cost	Electricity supply cost	181.8	202.7	68	141.2
	Electricity demand	63.8	68.8	122	127.2
Operation and maintenance cost		3.98	9	73	71.9
The unit starts and stop cost		258.7	260.3	4.19	9.3
Heating profit		1103.8	842.7	316.9	317
Total operation cost		1030.5	689.7	1182	970