As many people on social media have pointed out, with 10+ days or more of 105f+ weather in April, most people using air conditioners noticed their electric bills doubled in April.
My own bill, running one AC all day and another in the bedroom at night went from 3,000 thb in March to 5,229 thb in April.
With the temps that hot, the air conditioner was really struggling leading to using more electricity.
The good news, if there is any, is April is always the hottest month of year and it should be the highest electric bil.
One has to understand costs like electric can rise dramatically, when planning a budget to live in Thailand.