研究目的
Investigating the economic and environmental impacts of periodic module replacement in solar photovoltaic systems to enable competitive levelized cost of electricity (LCOE) for emerging PV technologies with shorter initial lifetimes.
研究成果
Periodic module replacement can enable competitive LCOEs for emerging PV technologies with initial lifetimes of less than 15 years, assuming they achieve competitive module efficiency, cost, and lifetime. This strategy presents an opportunity to accelerate the market introduction and decarbonization impact of high-potential PV technologies.
研究不足
The analysis does not account for minor operational changes needed to integrate increased generation after module replacement, such as substation and transmission line upgrades. It also assumes backward compatibility of future module designs with current BOS components, which may not always be feasible.
1：Experimental Design and Method Selection:
The study employs technoeconomic modeling to evaluate the LCOE impact of module replacement, using custom spreadsheet and Python-based cash-flow LCOE models.
2：Sample Selection and Data Sources:
Input parameters are based on 2018 NREL benchmarks for US PV systems and consultation with PV industry representatives.
3：List of Experimental Equipment and Materials:
The analysis considers 100 MW tracking utility-scale, 200 kW commercial, and 6 kW residential PV systems.
4：Experimental Procedures and Operational Workflow:
The study models the future evolution of module price, efficiency, and degradation rate with default growth parameters representing typical multi-crystalline silicon (mc-Si) modules.
5：Data Analysis Methods:
The approach includes sensitivity analysis of LCOE to key input parameters and comparison of environmental impacts with and without module replacement.
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