Thailand Industrial Power Tariff
Thailand Industrial Power Tariff
Embedded Files
Industrial Electricity Tariff Structure in Thailand
Industrial Electricity Tariff Structure in Thailand
Thailand’s electricity tariff system for industrial users is tier-based, depending on voltage level, maximum demand (kW), and the utility operator (MEA – Metropolitan Electricity Authority, PEA – Provincial Electricity Authority, or EGAT – Electricity Generating Authority of Thailand).
It determines how much factories pay per kWh, whether they can join green-tariff or direct PPA programs, and how attractive renewable-energy projects are in financial terms.
TOU (TIME-OF-USE) Tariff Components
TOU (TIME-OF-USE) Tariff Components
Every industrial consumer ≥ 30 kW pays through a TOU structure:
Every industrial consumer ≥ 30 kW pays through a TOU structure:
Tariff Levels by Factory Size
Tariff Levels by Factory Size
Extra Large-Scale / Heavy Industries
Extra Large-Scale / Heavy Industries
Corporations such as Sahaviriya Steel Industries (SSI) consume ~100 MWe and are supplied directly by EGAT through 230 kV transmission lines under long-term Power Purchase Agreements (PPAs).
Their tariffs are 10–20 % lower than standard industrial customers because:
They buy at transmission voltage (no distribution losses).
They can offer load-management or interruptible-load services.
They negotiate tailored PPA structures aligned with EGAT’s system stability needs.
Key Takeaways
Key Takeaways
Voltage matters: Higher-voltage customers enjoy 10–25 % lower tariffs.
Tariff is tier-based: A 500 kW factory and a 900 kW factory pay the same (4.1/4.2 rate); a 5 MW factory moves to Type 5 with lower rates.
Green Tariff (UGT 1 & 2) is available only to Type 4 & 5 users (MEA/PEA grid); Bulk EGAT customers (> 10 MW) negotiate direct renewable PPAs instead.
Average industrial power cost (including Ft) ranges between 4.0 – 5.0 THB/kWh (≈ 11 – 14 US¢/kWh).
Carbon-intensive sectors (steel, cement, chemicals) are seeking renewable PPAs and on-site biomass/biogas generation to mitigate CBAM exposure.
Why This Matters ?
Why This Matters ?
Understanding Thailand’s tariff tiers is essential for:
Evaluating PPA competitiveness: Renewable LCOE must beat the TOU rates above.
Structuring bankable projects: Industrial off-takers pay per kWh plus demand charge—affecting savings and IRR.
Assessing green-tariff readiness: Only specific classes qualify for UGT or REC bundling.
Quantifying carbon impact: Replacing grid electricity (0.55–0.60 tCO₂/MWh) yields verifiable emission reductions under T-VER / Verra standards.
Page updated
Report abuse