Consult · Construct · Care
Solar Expert by 3Con designs and installs rooftop solar for homes, pool villas, hotels and businesses in Hua Hin, Cha-am and Pranburi. We use Tier 1 equipment rated for salt-mist, handle every permit until your system is live, and keep a local team on call for aftercare — all in clear English.
Why go solar now
Yes — and more so than ever. Hua Hin averages 4.5–5 peak sun hours a day, so each kWp of panels produces roughly 1,400 kWh a year. Homes using over 400 units a month pay around THB 4.8 for every extra unit, so every unit you generate and use yourself is money kept. In 2026 Thailand also offers a personal income-tax deduction of up to THB 200,000 and a 20-year buy-back contract, while the Ft surcharge is scheduled to start recovering gas-cost shortfalls from May 2027 bills.
Who benefits most
The rule of thumb: the more electricity you use during the day, the faster solar pays back — every unit your panels produce is used on the spot instead of bought from the grid.
Air-conditioning, pool pumps, fridges and home offices draw most power in daylight. A 5–10 kWp system cuts the daytime bill sharply, and surplus power can be sold back to PEA while you are away.
Rooms, kitchens, laundry, pool pumps and hot water run all day, so hotels use almost all the solar they generate — fast payback plus a sustainability story your guests notice.
Chillers, espresso machines and air-con work hardest exactly when the sun is strongest, turning your daytime bill into margin every month.
Sized to your real load profile, with tax and BOI options checked case by case, plus carbon-reduction reporting for ESG.
English from first call to handover: bilingual quotations and warranties, we deal with the authorities for you, and you can watch your system live even while you are back home in Europe.
A hybrid system stores daytime solar for the evening and keeps fridges, pumps and Wi-Fi running during outages — ideal for villas outside town.
10-second estimate
Move the sliders for your monthly bill and daytime usage to see an estimated system size, budget and payback period.
Assumptions: yield ~1,400 kWh/kWp/yr · marginal tariff ~THB 4.8 (home) and ~4.4 (business) incl. Ft and VAT · surplus sold at THB 2.20/kWh for homes, up to 5 kW · installed price incl. VAT by system size · results are estimates; a real quote is based on your bill and a site survey.
Turnkey packages
A 5 kWp home system in Hua Hin starts at around THB 135,000 including VAT. A 10 kWp system starts around THB 239,000, and hotels and businesses are priced at THB 17,000–26,000 per kWp depending on size. Every package includes equipment, installation, PEA grid-connection paperwork and a monitoring app.
Homes with THB 2,500–4,500 monthly bills
Large homes and pool villas, THB 5,000–9,000 bills
Homes that need backup during outages
Hotels, resorts, restaurants, factories
* Starting prices are estimates as of October 2026 for straightforward roofs. Final price depends on roof type, cable runs, equipment models and meter changes.
The 3Con standard
Coastal air carries salt that corrodes metal and connectors far faster than inland. In Hua Hin, materials and mounting methods have to be right from day one.
Equipment we trust
3Con is brand-independent. We offer two or three options to suit your budget and roof — every brand has a Thai distributor so warranty claims actually work.
| Component | Recommended brands | Why | Typical manufacturer warranty |
|---|---|---|---|
| Solar panels Mono PERC / N-type TOPCon | LONGi, JinkoSolar, Trina Solar, JA Solar, Canadian Solar | BloombergNEF Tier 1, high efficiency, low degradation | Product 12–25 yrs · Performance 25–30 yrs |
| On-grid inverters | Huawei, Sungrow, SMA, Growatt | On the utility-approved list, app monitoring | 5–10 yrs (model dependent) |
| Micro / Optimisers | Enphase, SolarEdge, Huawei Optimizer | For multi-facing or shaded roofs, rapid shutdown safety | 10–25 yrs |
| Hybrid + batteries | Huawei LUNA, BYD, Pylontech, Deye | Store solar for night-time and outages | 10 yrs (cycle conditions apply) |
Exact models and warranty terms are stated in every quotation.
How it works
A typical home installation takes just 1–3 days on site. The total time from survey to switch-on depends on PEA inspection queues; 2026 policy targets approval within 7 days for self-consumption and 30 days for systems that sell power back.
Send 1–3 months of bills and a roof photo on LINE. We estimate system size and budget within 24 hours.
We check roof structure, orientation, shading, the distribution board and meter, and fly a drone to plan the best panel layout.
Thai or English quotation listing brand, model, panel count, expected yield and full warranty terms.
We check tax-deduction eligibility, file the PEA grid-connection request and notify the local authority if required.
Fully harnessed technicians, roof-specific waterproofing, neat cabling in conduit, and a clean site when we leave.
Electrical and protection tests, then PEA inspects and fits a meter that records exported power.
We set up the monitoring app on your phone, hand over warranty documents and show you how to use daytime power wisely.
Online production monitoring, yearly cleaning and inspection, and a Hua Hin team that can be on site quickly.
Warranty & aftercare
Your panels will sit on the roof for 25+ years, so long-term care is planned from the day you sign.
Incentives & financing
In 2026 Thailand offers a personal tax deduction of up to THB 200,000 and a 20-year buy-back at THB 2.20/kWh. 3Con checks your eligibility and prepares the paperwork.
Actual cost, for new systems up to 10 kWp installed and connected between 3 Mar 2026 and 31 Dec 2028, with an e-Tax invoice.
Use your own power first and sell the rest at THB 2.20/kWh on a 20-year contract, up to 5 kW per meter. PEA replaces the meter.
State banks offer solar loans for homes; GSB also offers solar loans for businesses at 3.25–3.5% in the early years (bank terms apply).
Energy-efficiency expense deductions and BOI privileges have specific conditions — we check them with specialists before you invest.
For larger hotels and resorts an investor installs the system and sells you power below the PEA tariff on a 15–25-year contract.
Information as of 30 Oct 2026, based on the Cabinet resolution of 27 Oct 2026, the National Energy Policy Council resolution of 18 Sep 2026 and Royal Decree No. 805 (2026). Sources: PEA, Thai PBS, Khaosod English. Conditions may change — please confirm with PEA. · Last updated: 2026-10-30
Worked examples
Modelled scenarios using the same assumptions as the calculator, to show typical value. Real results depend on your roof and how you use power.
Several A/C units and a pool pump running in daytime; about 80% of solar used on site
Lobby, kitchen, laundry and chillers consume almost all daytime output
Open 8am–8pm with A/C, chillers and espresso machines running all day
FAQ
An on-grid 5 kWp home system in Hua Hin costs roughly THB 130,000–140,000 including VAT. The final price depends on roof type, cable runs and equipment choice.
Yes. Foreign homeowners can install solar and sell surplus power, and we provide English quotations, contracts and support.
Individual taxpayers installing a new on-grid system (batteries allowed) of up to 10 kWp on their home, with grid connection approved between 3 March 2026 and 31 December 2028. An e-Tax invoice is required, and the invoice, the meter and the connection request must all be in the claimant's name (one person, one meter, one system). The higher your tax bracket, the more you save — we work it out for free.
Homes receive THB 2.20 per kWh under net billing on a 20-year contract, for up to 5 kW per meter. Because that is less than half the price you pay for grid power, the best design maximises daytime self-consumption.
Look at monthly units and the share used between 9am and 4pm. One kWp in Hua Hin produces about 115 kWh a month. Homes with THB 2,500–4,500 bills usually suit 5 kWp; pool villas with THB 5,000–9,000 bills usually suit 10 kWp. Try the calculator above for a first estimate.
Typical homes pay back in about 5–7 years. Pool villas with heavy daytime use take around 4–5 years and hotels around 3–4 years, while panels last 25 years or more.
With the wrong materials, corrosion happens much faster than inland. 3Con uses IEC 61701 salt-mist certified panels, anodised rails, stainless fasteners and IP65 enclosures, and recommends more frequent cleaning for beachfront homes.
Self-consumption systems up to 1 MW need no generating licence, but require a PEA grid-connection approval and sometimes a local-authority notification. 3Con prepares and files everything; timing depends on the PEA inspection queue.
On-grid systems shut down automatically during outages for line-worker safety. For power during outages you need a hybrid system with batteries, which keeps essential circuits running instantly.
We install on concrete tile, corrugated, metal-sheet and flat roofs. The roof is inspected first, mounts and waterproofing are matched to the roof type, and roof leaks are covered under the package warranty.
Once or twice a year for most homes, and three to four times a year for beachfront or dusty locations, because salt and dust reduce output. The 3Con Care plan includes cleaning and inspection.
Contact Solar Expert
Send a photo of your last 1–3 electricity bills on LINE and we will size your system and budget within 24 hours, free of charge.
Free advice, no obligation — our local team can survey your roof within the week.