Mae Moh power plant, Southeast Asia's largest lignite fired power generating facility.
Villagers in the area have long complained that the plant, which supplies north and northeast Thailand with power, is contaminating the surrounding area and poses a hazard to their health as well damaging agricultural land. The plant began operating about 30 years ago and, despite being dogged by accusations of excessive pollution and evidence that locals are suffering respiratory problems as a result of burn-off from the plant, has continued to expand its production.
Environmental activists in Thailand and elsewhere see the plant as an example of unclean power technology that should not be repeated in other countries. Proponents of coal and lignite plants say it offers cost effective energy with relatively little impact on the environment.