Using the Delphi method for selecting energy efficiency indicators in the Thailand context

Abstract

The restaurant buildings have consumed less energy than other commercial buildings, directly affecting their operation cost. One approach that can reduce energy consumption in restaurants is to have criteria for evaluating energy use, but there is no such criterion in Thailand. Therefore, to achieve the criteria in the guidelines, a detailed comparison of the overseas assessment tools on the similarities and differences will be helpful to achieve the new assessment tool on restaurant buildings for Thailand by using three tools from different countries, including (1) Green Restaurant 4.0 Standards, (2) Energy Star for Restaurants, and (3) BCA Green Mark for Restaurants. The result from this study adapted the modified Delphi method to determine the consensus by ten experts on the indicators. The result shows the five indicators: (1) install roof insulation, (2) air-condition room control, (3) encourage the use of consumption for the first time, (4) duct sealing in the building, and (5) encourage to reuse of furniture had passing expert’s judgment to be used as reference. The result will help develop the appropriate assessment tool for reducing overall energy consumption in Thailand.