Thailand
What a Thai household should know before buying a home battery: the new household net billing scheme, why export pays less than the grid price, permit changes, reported tax and subsidy support, and portable power stations.
- Thailand
- Press and think-tank sources
- Checked 13 November 2026
- Thailand uses net billing, not net metering. Under the 2026 household scheme, surplus power is bought at THB 2.20 per kWh under 10 years agreements, with a national target of up to 500 MW.
- The buyback rate is below the average retail price of about THB 3.88 per kWh (IEEFA), so each kWh you use yourself is worth more than each kWh you export. That is the case for a battery.
- The earlier 2019 household quota of 90 MW was used up by 2024, so check that quota is open for your utility (MEA in Bangkok, PEA elsewhere) before you promise yourself export income.
- Reported support: a personal income tax deduction of up to THB 200,000 for a grid-connected residential rooftop system (effective 3 March 2026) and a subsidy of up to THB 50,000 per home. We could not read the official texts for either.
- We found no rule specific to a household battery, no battery subsidy and no tax or duty relief for one. Ask your utility and installer in writing.
Last checked
Figures and rules on this page were checked on 13 November 2026 against the sources linked in each section. Thai schemes and quotas change often, so open the linked source before you sign a quote.
How the Thai market works
Most households buy electricity from the Metropolitan Electricity Authority (MEA) in Bangkok and nearby provinces, or from the Provincial Electricity Authority (PEA) elsewhere. The Energy Regulatory Commission (ERC) sets the rules for buying power from small producers, and the National Energy Policy Council (NEPC) sets policy.
IEEFA reports about 11.8 GW of solar in Thailand in early 2026, of which 3.6 GW is rooftop (IEEFA). Rooftop is the smaller part, and the group argues that weak incentives and policy uncertainty hold it back. The draft Power Development Plan 2026 aims for another 10 GW of rooftop solar (pv magazine).
The 2026 household net billing scheme
On 29 April 2026 the NEPC approved guidelines for buying surplus power from household rooftop solar as net billing (Khaosod English). The ERC approved the next round at its ERC meeting 25/2569 on 24 June 2026, with THB 2.20 per kWh for surplus power and a target of 500 MW (Pattaya Mail). Reports say agreements run for 10 years.
Net billing means imports and exports are valued separately. You pay the retail price for what you take from the grid, and you are paid the lower buyback price for what you send back. IEEFA says the buyback rate is below the average retail tariff of about THB 3.88 per kWh, and that the household quota in the 2019 scheme (90 MW) was used up by 2024 (IEEFA).
In August 2026, installers and eligible equipment were being registered ahead of the wider rollout (pv magazine). Ask your installer whether the equipment and installer you are considering are on the registered lists, because that can decide whether you qualify.
THB 2.20 per kWh
Buyback rate under the 2026 household scheme
500 MW
National quota for the scheme
Why a battery can make sense
Because export is paid less than the retail price, each kWh stored and used in the evening is worth more than the same kWh exported. A battery shifts midday solar to the evening, when many homes run air conditioning. A Dutch-language expat guide estimates a payback of 5 to 7 years for a system with high daytime use and no battery, and longer for evening use (Thailandblog). It is an installer-style estimate, not an official one, so run your own numbers.
We found no Thai rule on whether a battery changes your net billing agreement, whether battery discharge can be exported, or whether a battery must be declared to MEA or PEA. Ask your utility in writing before you order.
Permits and grid connection
The rules for installing rooftop solar have been relaxed. The Ministry of Interior introduced changes on 17 November 2025 to make rooftop solar easier and cheaper for property owners (Tilleke & Gibbins), and an installer blog says the factory licence requirement for rooftop solar was removed from 28 December 2024 (Reslink).
Grid-connected systems still need approval from MEA or PEA, and the meter, inverter and protection must meet the utility's requirements. We did not find a separate permit rule for a battery. Have the installer handle the application, and keep the approval document.
Tax and subsidy reports
An installer blog reports a royal decree published in March 2026 that gives individual taxpayers a personal income tax deduction of up to THB 200,000 for a grid-connected rooftop solar system on a home, effective 3 March 2026 (Reslink). We could not read the Royal Gazette text, so confirm with the Revenue Department or an accountant, and ask whether a battery counts.
A news network also reports a household solar programme with subsidies of up to THB 50,000 per home for one million households (Asia News Network). We could not confirm the dates, conditions or whether it is still open.
We found no Thai subsidy for a battery on its own, and we could not confirm any import duty or VAT relief for batteries.
Outages, heat and safety
Thailand's heat and humidity are hard on batteries. Choose lithium iron phosphate (LFP) chemistry, put the battery in a shaded, ventilated spot, and check the manufacturer's maximum operating temperature against your location. A garage that reaches 45 degrees Celsius is not the same as an air-conditioned utility room.
A grid-tied inverter normally shuts down when the grid fails, so ask for a hybrid or backup-capable inverter if backup is your goal. Flooding is a separate risk in some regions: install the battery above expected water levels.
Portable power stations versus a home battery
Search interest in Thailand is split between rooftop solar and portable power stations, which are popular for camping, shops and market stalls. A power station is a battery with sockets that you can use immediately. It is not wired into the house, does not switch over by itself and cannot earn export credits.
A home battery is installed by an electrician, can power whole circuits and works with rooftop solar and the household net billing scheme. Choose a power station when you need portable backup for a few devices, and a home battery when you want to shift solar into the evening and back up the house.
Outside Thailand
Rules, tariffs and incentives for home batteries differ from country to country, so do not apply the figures on this page to a home elsewhere. We are adding guides for other countries to this section.
Common questions about Thailand
Does Thailand have net metering?
No. Thailand uses net billing, so imports and exports are valued separately, and the buyback rate is below the retail price.
How much does Thailand pay for surplus solar power?
The 2026 household scheme pays THB 2.20 per kWh for surplus power, according to press reports of the ERC decision, under 10 years agreements and with a target of up to 500 MW.
Is a home battery worth it in Thailand?
Export pays less than the retail price (about THB 3.88 per kWh on average, according to IEEFA), so using your own solar in the evening is worth more than exporting it. Whether a battery pays back depends on your evening use and the quote.
Is there a subsidy or tax relief for a home battery in Thailand?
We found none for a battery on its own. An installer blog reports a tax deduction of up to THB 200,000 for rooftop solar and a news network reports a subsidy of up to THB 50,000 per home. We could not confirm either from an official text.
Do I need approval from MEA or PEA?
Grid-connected systems need utility approval. We found no separate permit rule for a battery, so ask your utility and let the installer file the application.
Is a portable power station the same as a home battery?
No. A power station plugs into individual devices and is not wired into the house. A home battery is installed by an electrician and can run whole circuits and work with solar.
Does heat affect a home battery in Thailand?
Yes. Choose LFP chemistry, install the battery in a shaded and ventilated place, and check the maker's operating temperature range.
Related guides
Work out what a battery would do in your home
Run your own numbers through the same hourly model our guides use, then compare the result with what installers quote.