Factors affecting the willingness to pay for biogas digestor construction of pig farms in Champasak province Lao PDR

Abstract

Abstract This paper aims to estimate the environmental issue and policy recommendations for supporting biogas digestor construction. An environmental evaluation related to environmental protection and raising natural resources as renewable energy to persuasion policy applies to pig farms with the idea of building a biogas digestor. The main occupation of the household has a relationship in the same direction as the WTP, agricultural occupation as their main occupation, especially crop producing and feeding animals, be willing to pay more than the households that are engaged in other occupations because the households that are engaged in agricultural production have high expectations for the not only benefits producing biogas, but also high-quality compost that can be used for their crops producing as well. They are willing to pay more than others, especially in a situation where the price of chemical fertilizers is high like the current situation. The period of raising pigs (year) has a relationship in the opposite direction to the WTP, and households with increased periods of raising pigs have the opportunity to be willing to pay less with a statistical significance level of 90%. It may be because the number of pigs has a relationship in the same direction with WTP, according to the hypothesis, a household with an increase in the number of pigs in the farm has a chance to be willing to pay by 1.43% with a statistical confidence level of 99%.