The hot weather in Thailand is causing an increase in electricity consumption, leading to a record high of 34,826.5 megawatts on May 6, said the Energy Regulatory Commission (ERC).
The new record was reached at 9.41pm on Saturday.
Thailand is seeing new power consumption records during the hot season every year. Normally the highest electricity usage occurs on weekdays, but the latest peak demand was recorded during last week's four-day holiday.
The ERC said it was aware of people's need to use air conditioners to relieve hot temperatures, but it still encourages the public to save electricity, which has become much more expensive over the last year.
The calculation of electricity prices is based on a progressive rate, meaning the more electricity people use, the more money they have to pay.
Summer is expected to end by the middle of May, while the impact of El Niño, including drought, is predicted to take its toll on Thailand by around the middle of June, the Meteorological Department said late last month.
El Niño is a natural phenomenon that causes ocean warming in the tropical Pacific, bringing drought to many countries, and rainfall and flooding to others.
The average maximum temperature has been around 40C since the beginning of April.
