Skip to content
Request a site assessment

Rooftop solar · KL and Selangor

Put your roof to work.

Just Solar by 0x designs and installs rooftop solar for homes and businesses in Kuala Lumpur and Selangor, including the Solar ATAP application, batteries, and EV chargers.

Request a site assessmentCall the office

Closed now · opens 10:00 AM

Terrace house roof in Kuala Lumpur fitted with rows of black solar panels under a clear morning sky.

How big a system would you need?

Move the slider to your monthly usage in kWh, shown on your TNB bill. This is a rough guide for planning; your real design comes from a site assessment.

Find it on your TNB bill as total kWh for the month.

System size
5.8kWp
Panels
10× 580 W
Roof area
28m²

Above 5 kW, a home needs three-phase supply under Solar ATAP.

Book a site assessment

Assumes about 105 kWh a month per kWp of panels in the Klang Valley, 580 W panels, and 2.8 m² of roof per panel including spacing. Shading, roof direction, and daytime use change the right size.

Sized to how you use power, not to how many panels fit.

Under Solar ATAP, exported energy is only credited within the same month. So a good system is sized close to your daytime use, and the design starts with your bill, not the roof.

Install, add on, look after

Ten services covering the full life of a rooftop system.

View all services

From bill to switch-on

Five steps from first message to a working system.

  1. Send your bill

    Share your address and a recent TNB bill.

  2. Site assessment

    We check the roof, shading, and electrical supply.

  3. Design and quote

    You get a layout, system size, expected generation, and price.

  4. Installation

    Panels, mounting, inverter, and protection are installed and tested.

  5. Solar ATAP

    The application is submitted after commissioning, and you start earning credits.

How we work

  • Assessment before a price

    Every quote is based on your roof, shading, supply phase, and bills.

  • Paperwork handled

    TNB technical checks and the Solar ATAP application are prepared with you.

  • Looked after afterwards

    Cleaning, inspections, monitoring, and inverter replacement when you need them.

Common questions

See all questions
Where is Just Solar by 0x?

The office is at 18-G, Jalan Radin Tengah, Bandar Baru Sri Petaling, 57000 Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur. Installations are carried out across Kuala Lumpur and Selangor.

What is Solar ATAP?

Solar ATAP is the programme for connecting rooftop solar to the TNB grid in Peninsular Malaysia. It continues from NEM, which ended in June 2025. You use your solar energy first, and any surplus exported to the grid earns credits on that month’s bill.

How big can a home system be?

Under Solar ATAP, homes on single-phase supply can install up to 5 kW and homes on three-phase supply up to 15 kW. Larger systems need a TNB technical check first.

Does unused export carry over to next month?

No. Under Solar ATAP, exported energy is credited within the same billing month only. That is why systems are usually sized close to your daytime use.

Visit the office

Office in Sri Petaling. Installing across the Klang Valley.

Call before you visit so the right person can go through your bill and roof photos with you.

Closed now · opens 10:00 AM

Address
18-G, Jalan Radin TengahBandar Baru Sri Petaling57000 Kuala LumpurWilayah Persekutuan Kuala Lumpur
Open in Google Maps (opens in new tab)
Hours
Every day10:00 AM – 6:00 PM

Ready to see what your roof can do?

Send your address and a recent TNB bill. We will arrange a site assessment and come back with a design and quote.

Request a site assessmentCall the office