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Residential Integration
Bespoke rooftop systems engineered to the architecture of your home: silent, seamless, structurally sound.
Consult · Design · Install · Maintain · Nationwide, Mae Sai to Narathiwat
We consult, design, install and maintain on-grid, hybrid and off-grid solar for homes, resorts and businesses across the whole of Thailand, from Mae Sai in the far north to Narathiwat in the deep south. Headquartered in Chiang Rai, with projects in Laos and Myanmar too.
Impact calculator
Play the bill game. Grab your latest electricity bill and drag the tube up to your amount. Watch the system size, payback and savings change, and find out whether you sit with the 5 kWp homes or the 30 kWp businesses.
↑ Drag the tube up: the higher it climbs, the heavier your bill
Estimates use a blended Thai tariff (฿4.5/kWh), 5 peak sun hours per day, and 85% offset. Final figures are confirmed in consultation. The price per kWp falls smoothly from ฿26,000 at 5 kWp to ฿12,000 at 100 kWp (about 16% lower each time the system doubles), then stays at ฿12,000.
Homeowners: tax deduction up to ฿200,000. New on-grid rooftop systems up to 10 kWp, connected to PEA or MEA between 3 March 2026 and 31 December 2028, qualify for a personal income-tax deduction of what you actually pay for equipment and installation, up to ฿200,000 (one system per person). You need a full e-Tax Invoice to claim it, and Solar ESS issues one for every system.
The energy lab
Four disciplines, one standard. Every system is specified, drawn, and installed to architectural tolerances, not bolted on as an afterthought.
The largest system in our portfolio, on steel frames raised clear of the grass for cooling and maintenance access.
Bespoke rooftop systems engineered to the architecture of your home: silent, seamless, structurally sound.
Grid-scale deployment for business and industry, optimized for load profiles and return on investment.
Energy resilience through intelligent storage. Keep the lights on through the night and through grid outages.
Full single-line diagrams, load calculations, and contractor-grade documentation. Permitted and compliant.
The luminous archive
Real bills, before and after
Monthly electricity bills from nine sites we installed, the month before solar compared with the second month after. Names and addresses are left out for privacy.
Real PEA bills shared with the owners’ permission, rounded to the nearest 10 baht. Savings depend on the season, how much power is used in the daytime and the system size; your estimate comes from your own bills.
What the owners say
Once the installation was complete, I was genuinely impressed by the team's professionalism and meticulous attention to detail. Despite having no technical background in solar systems, I feel completely confident and at ease knowing my home now has safe, reliable electricity.
My wife and I are very pleased. He was also very informative and explained every step of the process. I highly recommend him, and he speaks perfect English.
The practice
Solar ESS designs and installs solar energy systems across Thailand and Southeast Asia. We treat every roof as a structure first and a power plant second, engineering single-line diagrams, load profiles, and hardware selection to the same standard as the building beneath them.
We specify LONGi Hi-MO and Aiko Neostar panels, Solis hybrid inverters, and CHINT protection: documented, permitted, and built to outlast the warranty.
FAQ
Not true net metering. Thailand uses net billing: the solar power you use yourself replaces grid power at the full retail price, and the surplus you export is bought at a fixed lower rate of 2.20 baht per unit.
Typically about 4 to 7 years for an on-grid system when most solar is used in the daytime. Batteries lengthen payback but add backup and night-time use.
Yes. A personal income-tax deduction of up to 200,000 baht applies to on-grid rooftop systems up to 10 kWp connected between 3 March 2026 and 31 December 2028.
A standard on-grid inverter switches off for safety when the grid fails. You need a hybrid inverter with a battery and a backup circuit to keep essential loads running.
Very little. Panels are usually cleaned once or twice a year, with one yearly inspection of wiring, protection devices and earthing.
Yes for a plain on-grid inverter that is allowed to export. No for a hybrid inverter or any system that must limit export: the CT is the inverter's only way to see what the building takes from the grid.
Begin
Tell us about your property and your energy goals. We'll respond with a preliminary system design and savings estimate within two business days.
Checklist
Planning solar for your home? Please send us the following so we can assess your house.
You can upload all of these directly in the consultation form above. Go to the form
A Google Maps pin (GPS) of the house.
Your last 3–12 monthly electricity bills.
A list of your electrical appliances, from the largest load to the smallest, with how many hours a day each is used and at what time of day (day or night).
Photos of where the solar panels would go.
The approximate size of the area, and which way it faces.
The roof type and material (metal sheet, tile, concrete, etc.).
Anything that casts shade on it (trees, buildings).
A photo with the cover open, plus a photo of the wall space next to it where the inverter would be mounted.
How cables can run from the roof to the MDB (conduit, ceiling space, outside wall), with photos if possible.
A photo of the meter, showing its rating label (for example 15(45) A) and whether it is single-phase or three-phase.
The size of the cable from the meter to the MDB (sq.mm), and whether it is copper or aluminium.
The house's electrical diagram, if you have one.
Sharp, close photos where we can read the details, for example:
Name, phone number and LINE ID of one person, such as your electrician or caretaker. We will:
Send to: LINE solaress1 · kris@solar-ess.org · Tel 063 151 6694, 089 429 6832