TECHNO-ECONOMIC PERFORMANCE STUDY OF NEW DISTRIBUTED POWER GENERATION SYSTEM WITH SOLAR THERMOCHEMISTRY AND METHANE COMPLEMENTARY

Wang Qiushi; Duan Liqiang; Huang Shangyou; Wang Chu; Liu Luyao; Ding Xingqi

doi:10.19912/j.0254-0096.tynxb.2024-2015

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (3) : 29-39. DOI: 10.19912/j.0254-0096.tynxb.2024-2015

TECHNO-ECONOMIC PERFORMANCE STUDY OF NEW DISTRIBUTED POWER GENERATION SYSTEM WITH SOLAR THERMOCHEMISTRY AND METHANE COMPLEMENTARY

Wang Qiushi, Duan Liqiang, Huang Shangyou, Wang Chu, Liu Luyao, Ding Xingqi

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Abstract

A new solid oxide fuel cell-gas turbine-Kalina cycle （SOFC-GT-KC） hybrid power system integrated with high-temperature solar therm chemical and methane complementary is proposed in this article, which uses high-temperature solar energy to drive methane reforming to produce hydrogen, and the produced hydrogen-rich syngas drives the SOFC-GT-KC hybrid power system to generate electricity, realizing efficient energy cascade utilization. The analysis model of the new system technical and economic performance is established, with simple payback period, dynamic payback period, net present value, and levelized cost of electricity as performance evaluation indicators. The effects of fuel price, electricity sale price, annual operating hours, interest rate and discount rate on the new system’s techno-economic performance under the given operation strategy are analyzed, and the economic performance of the new system performance in different regions with different operating conditions is studied. The research results show that the total cost of the new system within the design life is 19.23 million yuan, of which fuel cost accounts for the highest proportion, reaching 58.57%. The net present value of the new system at the end of its design life is 1.31 million yuan, with a simple payback period of 11.06 years. The calculation results of typical regional applications show that the net present value of the new system is higher and the investment payback period is shorter in areas with strong solar radiation and high electricity price, while the average levelized cost of electricity is lower in areas with low gas prices and strong solar radiation.

Key words

solar energy / fuel cell / cascade utilization / hydrogen production / distributed power generation / economic analysis

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Wang Qiushi, Duan Liqiang, Huang Shangyou, Wang Chu, Liu Luyao, Ding Xingqi. TECHNO-ECONOMIC PERFORMANCE STUDY OF NEW DISTRIBUTED POWER GENERATION SYSTEM WITH SOLAR THERMOCHEMISTRY AND METHANE COMPLEMENTARY[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 29-39 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2015

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