Ten provinces with most electricity sales: 2004 - 2006   2004   Rank Provinces KWh 1 Rayong 6,557,027,744 2 Sara Buri 5,354,944,675 3 Pathum Thani 5,343,068,516 4 Chon Buri 5,193,108,712 5 Samut Sakhon 5,095,840,313 6 Phra Nakhon Si Ayutthaya 3,817,468,492 7 Nakhon Ratchasima 2,732,941,375 8 Nakhon Pathom 2,646,440,176 9 Chachoengsao 2,543,420,230 10 Songkhla 2,119,225,084   Whole Kingdom 71,629,446,059   2005   Rank Provinces KWh 1 Rayong 6,841,275,343 2 Chon Buri 6,663,761,987 3 Pathum Thani 5,868,307,517 4 Sara Buri 5,808,067,739 5 Samut Sakhon 5,586,633,914 6 Phra Nakhon Si Ayutthaya 4,042,740,799 7 Nakhon Ratchasima 2,977,874,207 8 Nakhon Pathom 2,813,545,401 9 Chachoengsao 2,566,527,779 10 Songkhla 2,267,305,708   Whole Kingdom 77,238,420,913   2006   Rank Provinces KWh 1 Chon Buri 7,294,205,641 2 Rayong 7,215,960,809 3 Pathum Thani 6,232,270,565 4 Sara Buri 5,978,704,947 5 Samut Sakhon 5,878,782,748 6 Phra Nakhon Si Ayutthaya 4,339,292,786 7 Nakhon Ratchasima 3,222,456,357 8 Nakhon Pathom 2,928,997,468 9 Chachoengsao 2,790,677,307 10 Songkhla 2,356,034,243   Whole Kingdom 81,820,873,421 Souce : Provincial Electricity Authority (PEA) Compiled by : Statistical Forecasting Bureau,  National Statistical Office