Optimal Operation of Hydrogen Energy Coupling Integrated Energy System considering Green Certificate, Ladder-Type Carbon Joint Trading, and Dual-Incentive Demand Response

Table 2

Time-of-use prices of electricity and gas.

Initial electricity price	Time period	Yuan/kWh/m^3
Valley	1:00–6:00, 23:00-24:00	0.5
Level	7:00-8:00, 13:00–17:00	0.73
Peak	9:00–12:00, 18:00–22:00	1.21
Initial gas price	Time period	Yuan·m^−3
Valley	23:00-24:00, 01:00–05:00	1.57
Level	6:00-7:00, 13:00–16:00, 19:00–22:00	1.93
Peak	8:00–12:00, 17:00-18:00	2.16