3.2 Questionnaire design and data collection
Based on the in-depth analysis and survey, a total of 110 questionnaires were distributed to government departments, research institutions and universities in the fields of energy planning and construction, respectively, and 95 questionnaires were collected. Experts were invited to score each index in Table 1 as 9, 7, 5, 3 and 1, and add the adjacent median of 2, 4, 6 and 8. The data of the 95 questionnaires screened were averaged to obtain the AHP judgment matrix list.
Table 2 List of AHP judgment matrix