Thailand Electricity Bills Explained: Units, Rates & Reducing Costs

Thailand's electricity is supplied by the Provincial Electricity Authority (PEA) in provinces and the Metropolitan Electricity Authority (MEA) in Bangkok. The billing system is tiered: the first 15 units (kWh) per month are at the lowest rate (฿1.84/unit), and rates increase progressively through six bands, reaching ฿4.42/unit for usage above 400 units. This means that heavy air-conditioning users (AC is by far the largest electricity consumer in Thai homes) pay significantly more per unit than light users. Typical bill benchmarks: a one-bedroom condo without much AC usage: ฿400–800/month. A two-bedroom with AC running most of the day: ฿1,500–3,500/month. Short-term rentals in serviced apartments often charge a flat rate per unit that can be significantly higher than the MEA/PEA rate (฿6–8/unit is common in tourist areas — always check before signing a lease). Reading your bill: 'หน่วย' is the unit count, 'วันอ่าน' is the reading date, and 'กำหนดชำระ' is the payment due date. Bills can be paid at any 7-Eleven, bank, or the authority's office. For condo tenants, the building typically issues its own bill at the authority's rates. Reducing consumption: inverter-type air conditioners use 30–40% less electricity than non-inverter models; setting AC to 25°C rather than 22°C reduces energy use significantly; ceiling fans in conjunction with AC allow the thermostat to be set higher.