Thailand Agricultural Electricity Rate 2026 + How to Apply for a Farm Connection
The 'agricultural rate' is a dedicated utility tariff class for water-pumping for agriculture by farmer groups/cooperatives/irrigation agencies. This page explains how many baht per unit it is, who qualifies, how it differs from the home rate, and how to apply for an agricultural connection with the PEA.
The 'agricultural rate' is a dedicated utility tariff class (water-pumping for agriculture) — not a discount every farm gets automatically. It's for qualifying farmer groups, cooperatives and irrigation agencies. The per-unit rate sits in roughly the 3.70–4.15 THB/unit band (including the Ft of 0.1623 THB/unit; before 7% VAT). The exact figure follows ERC announcements and moves with the Ft period, so confirm the latest rate with the PEA (1129). Compare against other classes at how many baht per unit 2026. Most ordinary commercial farms use the normal/business tariff, not the special agricultural-pumping class.
What Is the Agricultural Rate? (A Special User Class)
Thailand's tariff structure has several 'user classes' — residential, small/medium/large business, non-profit, and a water-pumping-for-agriculture class. That last one is what people call the 'agricultural rate'. It exists for water-pumping to grow crops by farmer groups, agricultural cooperatives, or bodies running irrigation systems — it is not a general rate every home or farm gets. To use it you must meet the conditions and register with the utility as required. Its per-unit rate differs from the residential and business classes. See the overview of every class at how many baht per unit 2026 and the Thai electricity guide.
Agricultural Rate Per Unit vs the Home Rate
The table below compares approximate per-unit rate bands (including the current Ft of 0.1623 THB/unit; before 7% VAT). Exact figures follow ERC announcements and change with the Ft period — confirm with the PEA before relying on them:
| User class | Approx. band (THB/unit) | Note |
|---|---|---|
| Agricultural (water-pumping) | ~3.70–4.15 | Special class; conditions apply |
| Residential | ~3.95 (avg) | Tiered; more use, higher |
| General business | ~4.18 | Most commercial farms sit here |
* Bands are approximate, include the current Ft, exclude 7% VAT, and may have a separate monthly service charge / demand charge by class. Confirm exact figures with the PEA (1129). See all classes at how many baht per unit.
Who Qualifies for the Agricultural Rate?
The agricultural (water-pumping) rate is a special class, not open to everyone. The groups that typically qualify are:
Farmer groups / agricultural cooperatives that use power to pump water into shared crop plots.
Irrigation agencies/projects running water-pumping systems for agriculture in an area.
Agricultural water-pumping users registered under the utility's conditions — the supply must be used genuinely for agriculture, not mixed with a residence or business.
If you run an ordinary commercial farm (e.g. greenhouses, a livestock farm with varied electricity use), you'll usually be on the normal or business tariff, not the special agricultural-pumping class. Exact conditions follow the PEA/MEA announcements and assessment — ask first.
How to Apply for an Agricultural Connection (PEA)
Agricultural connections are mostly in the provinces (served by the PEA). The core steps are:
1. Prepare land/agriculture documents
Prepare your ID card, land-rights documents (title deed/Nor Sor 3/eligible documents), and proof of agricultural use such as farmer/cooperative registration. Ask the PEA for the exact list.
2. Submit the connection request to the PEA
File a connection request (stating the agricultural/water-pumping purpose) at your local PEA office, via 1129, or through the PEA Smart Plus app. Staff assess whether you qualify for the agricultural class or must use another tariff.
3. Site survey + cost assessment
The PEA surveys the distance from the line to your point of use and the poles/transformer needed, then quotes the line-extension/fees, which depend on distance and load size. We don't state a fixed figure because it varies greatly per plot.
4. Installation + start on the agricultural rate
Once you've paid and installation is done, you start on the approved tariff (the agricultural class if you qualify). The bill is units used × that rate + Ft + VAT.
Can Solar Cut a Farm's / Irrigation Pump's Power Bill?
Yes — and it's often very worthwhile, because agricultural water-pumping is power-heavy during the day, exactly when sunlight is strong. A solar pump system or rooftop solar on a greenhouse self-generates at the right time, cutting the units bought from the grid. Commercial farms on the (pricier) business tariff benefit even more from cutting daytime power. Read the Thai electricity guide and on net metering / selling back, or let CapSolar assess for free.
About this page
Compiled by the CapSolar team, led by Frank Lee (Founder). The user-class details and steps are checked against the utilities (ERC/PEA). This page is general information, not personal advice — exact rates and conditions follow the utilities' announcements and move with the Ft period; confirm with the PEA (1129) before deciding.
FAQ
Daytime-heavy farm or pump? Cut it with solar
Midday sun lines up with pumping hours. CapSolar will assess for free whether solar pays off for your farm or pump system.