An Impact Evaluation of Introducing a CO<sub>2</sub> Reduction Surcharge and Storage Battery System on the Availability of Coal-fired Power Generation and CO<sub>2</sub> Emissions
- Other Title
- CO<sub>2</sub>削減賦課金と蓄電池の導入が石炭火力の利用率と CO<sub>2</sub>排出量に及ぼす影響の評価
As the Japan’s feed-in tariff scheme, a renewable energy surcharge is charged in proportion to the grid power consumption. Authors proposed to replace this with a “CO2 reduction surcharge” which is charged in proportion to CO2 emissions. This paper evaluates nationwide effects of introducing this surcharge and storage battery when renewable energy is largely introduced. By optimizing hourly thermal power generation output of each type, PV/wind energy curtailment, charge/discharge amount and tie line power flow, the annual thermal power cost in Japan is minimized with linear programming methods. Then the CO2 emissions and costs are evaluated. Results show the introduction of storage battery decreases PV/wind energy curtailment, but CO2 emissions are not decreased because the energy share of coal-fired power generation is increased. When the surcharge unit price is increased, the availability and capacity of lower efficiency coal-fired power generation are decreased. Results also show that CO2 emission intensity can be decreased to 0.2kg-CO2/kWh when most of coal-fired plants are abolished, but then more capacity of LNG combined cycle power generation and more fuel costs are required.
- Journal of Japan Society of Energy and Resources
Journal of Japan Society of Energy and Resources 42 (3), 166-174, 2021
Japan Society of Energy and Resources