Recently, the consumptions of the fossil fuel are rapidly increased because of increasing population and economic growth in developing country. As the results, the Global warming by increasing in carbon dioxide and lack of the fossil fuel are concerned. We must do developing the new fossil fuel such as peat or brown coal. However, the peat or brown-coal had a problem with very high water content. Therefore we developed the economic drying processes for using peat as energy source. We studied the comparing a squeeze method (compression-dewatering method) and thermal drying method. From the results, we found that the squeeze method is economic process better than thermal drying method.