01
Bill analysis
Study usage patterns to size the right system
กำลังเปิดหน้า…
Solar for homes and businesses
Put your roof to workLower your energy billsTurn sunshine into savings
Start with your electricity bill. Find a system that fits.
- No signup
- No technical knowledge needed
- Reviewed by our team
Savings depend on usage and site conditions.
Energy from your roof- 1Your bill
- 2Find your system
- 3Talk to our team
Home solar
View details →
Business solar
View details →
Factory solar
View details →คำนวณโซลาร์
What's your monthly bill?
Let us calculate a solar system for free
- 01Tell us your bill and property type
- 02Explore your initial estimate
- 03Request a site assessment
Free solar assessment
Get an estimate and request a callback
End-to-end solar, in one place
02
Site survey
Inspect roof, electrical system, and site constraints
03
System design
Design solar size, inverter, and protection
04
Equipment sourcing
Select certified-brand components
05
Installation
Installed by a vetted team
06
Inspection & handover
Commissioning checks before go-live
07
Documentation
Support paperwork in the agreed scope
08
After sales
Warranty and ongoing care
Solar Home
For homes that want lower bills and more energy security
Solar Business
Shops, restaurants, offices and SMEs with daytime loads
Solar Factory
For factories and businesses with high electricity costs
Solar Hybrid
Solar + battery for backup power
Packages
Solar 5 kW
บ้านและธุรกิจขนาดเล็ก
From 225,000 THB
Solar 10 kW
บ้านใหญ่ / ร้านค้า
From 430,000 THB
Solar 20 kW
สำนักงาน / SME
From 820,000 THB
Solar 30 kW
โกดัง / โรงแรมขนาดเล็ก
From 1,180,000 THB
Solar 50 kW
โรงงานขนาดกลาง
From 1,850,000 THB
Custom System
Designed around your actual load
Priced after design
How it works
- 1
Send your bill
- 2
Usage analysis
- 3
Solar assessment
- 4
Site survey
- 5
Design and quotation
- 6
Installation
- 7
System check
- 8
Handover and after-sales
Why Nexa Energy
- Designed from real electricity usage
- Transparent pricing
- Certified equipment brands
- Vetted installation teams
- Quality inspection process
- Warranty coverage
- After-sales support
- From homes to factories
Let us help with solar paperwork
We help prepare and track documents related to installation and interconnection, within the agreed service scope.
More than installation
Tools that help you decide, install, and look after a solar system.
01
Smart Solar Calculator
Estimate system size and payback from your electricity bill.
Try the calculator02
Document Assistance
Track required documents and status in one place.
View document service03
Equipment Comparison
Compare panels, inverters, and batteries before you decide.
Compare equipment04
Smart Monitoring
See production, savings, and system alerts after install.
View sample dashboardRestaurant 30 kW case
Before: 30,000 THB/month
After: 18,000
Savings: 12,000 / 144,000 THB
Projects
คุณอารยา
เชียงใหม่ · Solar Home 10 kW
“The team sized from our real bill so we did not overbuy.”
คุณสมชาย
ชลบุรี · Solar Factory 50 kW
“Installation was structured with a proper handover check.”
FAQ
How much can solar reduce my bill?
It depends on your bill, roof, and usage. A well-sized system typically cuts daytime costs.
How many years to pay back?
Typically around 4–8 years depending on size and tariff.
Can I use solar at night?
On-grid systems use the grid at night. Batteries can cover backup needs.
Does solar work during an outage?
Standard on-grid systems shut down for safety. Hybrid + battery can backup.
What is on-grid solar?
A grid-tied system that uses solar first, then the utility.
What is hybrid?
Solar combined with battery storage.