http://172.19.1.196:8983/solr/secweb/select?q=Nonproductive Mountainous OR "Nonproductive Mountainous" OR "Unproductive Hilly" OR "Unproductive Elevated" OR "Inefficient Hilly" OR "Inefficient Elevated"&wt=json&indent=true&facet=true&facet.field=key_filetype&facet.field=key_sitemap&facet.field=system_name&facet.field=key_keywords&hl=on&hl.fragsize=200&hl.fl=id,title_th,searchcontent_th&defType=edismax&qf=searchcontent_th&qf=id&qf=title_th^1000000&pf=title_th~5^1&pf=searchcontent_th~5^10000&ps=2&mm=100&qf=title_th_default&start=0&rows=10
. Lao PDR’s installed capacity is approximately 8,800 megawatts. Because of its abundant water resource and mountainous geography, the electricity generation is mainly from hydropower plants. With an aim