“…Statistical yearbook data of Hebei, Shandong and Henan provinces indicate that their population structure and energy structure ratios [ [79] , [80] , [81] ] are similar to those in the national statistical yearbook of 2021 [ 78 ], Hebei, Shandong, and Henan accounted for 84.6 % of the country's residential PV projects subsidized by national finance in 2021 (40.2 %, 32.3 %, and 12.1 %, respectively) [ 58 , 69 ], so data from these provinces would be more representative ( Appendix S2 shows detailed population and energy structure). These provinces provided a typical sample for the analysis of purchase deciding factors and intention among different groups.…”