Solar permits in Thailand (2026)
— what foreign homeowners actually need
"Is it even legal for me to put solar on my roof?" is one of the first questions expats ask us. The short answer is yes — and since 2025 the rules are simpler than most older forum posts suggest. Here is how permitting really works in PEA areas like Phuket, Phang Nga and Krabi.
Rooftop solar is legal for foreigners in Thailand, and since mid-2025 a home system used for self-consumption no longer needs an energy-business licence — just a simple registration plus PEA's grid-connection approval with engineer-certified drawings. Paperwork is filed in the name on the electricity meter (that matters for leased and company-owned houses). Selling surplus is a separate, optional PEA application (2.20 THB/unit, capped at 5 kW AC), and on-grid systems up to 10 kWp can qualify for Thailand's 200,000 THB personal tax deduction. We handle every form for our customers.
Since mid-2025, self-consumption solar got much simpler
Older articles and forum threads describe a licensing process that no longer applies to normal home systems.
For years, the paperwork was the part of going solar that scared people off. That changed when Thailand eased its rules in mid-2025: a rooftop system installed to power your own home — the way the vast majority of our customers use solar — was taken out of the energy-business licensing regime. Instead of applying for a licence, the system is simply registered/notified, a far lighter process.
Two things did not change. First, your system still connects to PEA's network, so PEA's grid-connection approval still applies — that is a safety process, not a bureaucratic hurdle, and it is the same for Thais and foreigners. Second, if you want to sell surplus power to PEA rather than just use it yourself, that remains a separate scheme with its own application (details below and in our guide to selling power back to PEA).
What PEA still requires before switch-on
Phuket, Phang Nga and Krabi are served by PEA (Provincial Electricity Authority). For a grid-connected home system, the file PEA sees looks like this.
None of this should land on your desk. A proper installer prepares, files and chases all of it — it is included in every Pearl Solar quote, never an extra. See what our service covers.
The paperwork follows the meter, not your passport
This is the single most useful thing for a foreign owner to understand. Whoever is registered on the electricity meter is the applicant.
| Your situation | Who signs the PEA paperwork | What to watch |
|---|---|---|
| House & meter in your own name | You do — passport instead of Thai ID is fine | Simplest case. You may also qualify for the 200,000 THB tax deduction if you are a Thai tax resident (180+ days/year) |
| Leased villa / leased land | The owner named on the meter, with your lease and their consent | Get the owner's written agreement early — most say yes, since solar adds value to their property |
| House held by a Thai company | The company (director signs, with company affidavit) | Fully workable — but the personal tax deduction is for individuals only, so a company-held meter cannot claim it |
| Condo unit | You, plus the juristic person (building management) | The roof is common property, so committee approval is the real gate — many condos decline, worth asking before you plan |
The meter name matters beyond the permit itself. Thailand's 200,000 THB personal income tax deduction for rooftop solar (Royal Decree No. 805, 2026) is only claimable by the individual named on the meter, for on-grid systems up to 10 kWp installed by a VAT-registered provider — we cover every condition in our tax deduction guide for expats. Likewise, a PEA buy-back application must match the meter registration exactly.
The buy-back scheme is a separate, optional application
Installing solar for your own use and selling surplus to PEA are two different pieces of paperwork. The buy-back is optional: PEA opened the 2026 household round on 1 July 2026, paying 2.20 THB per unit on a 10-year agreement, capped at 5 kW AC per meter, with a 2,000 THB (ex VAT) inspection fee — applications run at ppim.pea.co.th until 30 November 2027. Since a unit you use yourself saves you around 4.3 THB while a unit you sell earns 2.20 THB, we size systems for self-consumption first and treat the buy-back as a bonus. Full details, step by step, in our PEA buy-back guide.
What to expect — and what we handle for you
The physical installation of a home system takes a few days. The paperwork track — registration, PEA application, drawings, inspection — is typically measured in weeks, not months, and we run it in parallel with the installation so it rarely delays your switch-on. The buy-back application, if you want it, is its own track with its own inspection.
At Pearl Solar Energy, permitting is not an add-on: we prepare, file and follow up on all of it — the self-consumption registration, the PEA grid-connection application with engineer-certified drawings, the inspection, and the buy-back application if you choose to join. Our crew comes from the standby-power trade serving Phuket hotels, so working to PEA's requirements is home ground for us. You get a written, itemised quote in THB with the paperwork included, in English. Start with our savings calculator or see real 2026 system prices in THB.
Permit questions expats ask us
Can a foreigner legally install solar on a house in Thailand?
Yes. There is no citizenship requirement for rooftop solar. The paperwork follows the electricity meter, not your passport: applications are made in the name of the person (or company) registered on the meter with PEA. If that is you, you sign; if the house is leased or held by a company, the meter holder signs and you arrange consent. A licensed installer prepares and submits everything either way.
Do I need a government licence to generate my own solar power?
Not for a normal home system. Since Thailand eased its rules in mid-2025, rooftop solar used for self-consumption no longer requires an energy-business licence — a much simpler registration/notification process replaced it. You still need PEA's approval to connect the system to the grid, which involves an application, engineer-certified drawings and an inspection before switch-on.
What if my house is leased or owned by a Thai company?
The application is made in the name on the electricity meter. On leased land or a leased villa, that is usually the owner or the company, so you need their signature and consent — most owners agree readily since solar adds value to the property. If your own Thai company holds the house and the meter, the company signs with the usual company documents (affidavit, director's signature). Note that the 200,000 THB personal tax deduction applies to individuals only, not companies, and only to the person named on the meter.
Do I need a separate permit to sell surplus power back to PEA?
Yes — selling surplus is a separate, optional application under PEA's household buy-back scheme. The 2026 round opened on 1 July 2026 at ppim.pea.co.th: PEA pays 2.20 THB per unit on a 10-year agreement, capped at 5 kW AC per meter, with a 2,000 THB (ex VAT) inspection fee. The applicant's name must match the meter registration. You can install solar for self-consumption without ever joining this scheme.
How long does solar permitting take in Thailand?
The physical installation of a home system takes only a few days. The paperwork — self-consumption registration plus PEA grid-connection approval and inspection — typically takes several weeks, and a good installer runs it in parallel with the installation so it rarely delays switch-on. The optional PEA buy-back application is a separate track with its own review and inspection.
Related reading: the 200,000 THB solar tax deduction for expats · selling power back to PEA (2026) · solar for pool villas in Phuket.
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Pearl Solar Energy Co., Ltd. · 19/27 Moo 2, Wichit, Mueang Phuket, Phuket 83000 · Mon–Sat 08:00–17:00 · Serving Phuket, Phang Nga (Khao Lak) & Krabi