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Jomsolar — Total Solar Solutions

Concept visualization

01 / THE BIG PICTURE

No power? No worry.

Off-grid solar and battery systems for farms, islands and remote homes across Peninsular Malaysia.

Estimate my systemSee our projects
Scroll down to the roofSCROLL TO EXPLORE
03 / OFF-GRID LIVING

Solar by day. Stored energy after sunset.

Far from the grid, still close to the life you want. See how one home is powered by day, night and cloud.

Concept image: a modern two-storey house with rooftop solar panels in deep mountain rainforest
Full sunEvery day at home starts with the sun.
Rooftop solarGenerating
Home loadsPowered by solar
Solar → home loads · surplus → battery
One home, three moments.Changes every 8 s · day → night → cloudy
01 / 03

Solar powers the home. Surplus energy charges the battery.Concept visualization. Figures are illustrative, not live system data.

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Off-grid solar

Malaysia's leading off-grid solar specialists

Since 2019 we have built off-grid solar for farms, rural homes and remote sites across Peninsular Malaysia, with more than 200 projects completed.

  • Off-grid since 2019
  • 200+ completed projects
  • Across Peninsular Malaysia

The photos here are illustrations, not Jomsolar projects. Our own projects are just below.

Illustration: two installers in hard hats fitting solar panels on a tiled roof
Illustration: a solar array on a dark tiled house roof
Illustration: solar panels on a tilted aluminium frame on a flat concrete roof
Illustration: a stack of new solar panels on a pallet at a building site
Illustration: rows of solar panels on a large metal roof
Illustration: two sets of solar panels on a red corrugated roof
Illustration: small model houses standing on a solar panel at sunset

Real projects

What we have built and checked

See all projects

Off-grid · Raub, Pahang

Solar for a hillside farm building

The difficulty
A farm building in a hillside valley that has to make its own power.
What we chose and why
An off-grid solar system on the building's own metal roof — the panels need no extra land.
View the case: Solar for a hillside farm building
Aerial thermal image of an 18-module rooftop array; one module in the bottom row shows a small, bright hot area

Thermal inspection · Jenjarom, Selangor

Aerial thermal inspection of a shop-lot rooftop array

The difficulty
Rows of panels on a shop-lot roof that are hard to check one by one.
What we chose and why
One drone flight took thermal and normal photos of the whole array, compared panel by panel.
Result
One panel that looked normal had a small, sharply defined hot spot.

Flagged for an on-site check. The thermal image shows where — the cause is confirmed on site.

View the case: Aerial thermal inspection of a shop-lot rooftop array
Aerial view of a solar array on the roof of a beachside building at an island camp on Pulau Lang Tengah

Off-grid · Pulau Lang Tengah, Terengganu

Rooftop solar for an island camp

The difficulty
An island camp: power has to be made on site, and transport and later servicing have to be planned.
What we chose and why
Off-grid solar on the roof of a beachside building — the camp has to make its own power on the island.
View the case: Rooftop solar for an island camp

More completed systems

  • 23 kWpTanjong Karang, Selangor · Off-grid
  • 13.2 kWpSetia Alam, Selangor · Hybrid & storage
  • 2 × 4.8 kWp · 10 kWhKuala Pilah, Negeri Sembilan · Off-grid

Load calculator

Find a starting point for your off-grid system.

Choose an example, then adjust your appliances and usage.

No phone number needed

01Your appliances6 switched on

Start from an example

Examples are adjustable samples of daily use, not a guaranteed configuration. The suggestion is always calculated from the appliances and hours below.

Estimate so far

4.6 kWh / day

Package 01 · RM 13,990

View estimate
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    All day · from the energy label

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    12
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02How much backup for rainy days?

The reserve is energy on top of one normal night. How fast the battery refills after a rainy spell needs a proper design.

Assumptions and formulas
  • Solar output: 3.2 kWh per kWp per day (Jomsolar's planning figure for Selangor), treated as panel output before inverter and battery losses.
  • Daytime use: PV → inverter at 95 %. Night use: charging 95 % × battery-to-socket 90 % (inverter included, counted once).
  • Battery (nominal): (night energy + reserve) ÷ (90 % usable × 90 %). The reserve adds battery, not panels.
  • Panels: counted by energy, 650 W each, rounded up — the wiring (strings, MPPT) is designed separately.
  • Inverter: everything switched on running at once × 1.25. Starting power of motors is not estimated.
  • Fridge: 1.2 kWh/day from a typical energy label, half by day and half at night. Aircon: 900 W at an average 60 % load.
  • A package is shown only if solar, battery, inverter, its daily-use reference and its aircon type all fit. No savings or payback are calculated.

Already have solar?

Spot the panel that's running hot.

A normal photo of a real rooftop array. Tap where you think the problem is, then scan it in thermal.

Visible-light aerial photo of the same 18-module rooftop array; the affected module looks normal
Normal photoTap where you think it's hot
  • Drone surveyno roof climbing
  • No shutdownkeeps generating
  • Written reportwith next steps

On-site inspection from RM 799 · report and travel quoted separately

Request an inspectionSee inspection options

Process

What happens next

  1. 01

    Message us

    Tell us the place and what you need — photos help.

  2. 02

    We understand your needs

    Which appliances, or details of your existing system.

  3. 03

    Site visit or inspection

    On a day that suits you.

  4. 04

    Quote or report

    A written quote, or an inspection report with images.

FAQ

Common questions

All questions
What is the difference between off-grid and hybrid solar?
An off-grid system runs without a utility connection: solar panels charge a battery bank, and an inverter supplies your appliances. A generator is often added as backup for long cloudy spells. A hybrid system also has solar and a battery, but works alongside the grid or a generator — the battery covers outages or selected loads, and the other source tops up when needed.
Do you have packages and prices?
Yes. There are eight off-grid packages from RM 13,990, each including panels, inverter, battery, delivery and installation — see the off-grid solar page. They are a starting point: we recalculate from your own appliance list, and the final system and price are confirmed after a site visit. Hybrid systems are quoted per site. Thermal inspections start from RM 799 for systems of 1–10 kWp (report and travel charged separately).
How much does a thermal inspection cost?
The on-site inspection is priced by system size: RM 799 for systems of 1–10 kWp, and RM 1,500 for systems above 10 kWp up to 20 kWp. Larger systems are quoted on request. The written report and travel are charged separately, and we quote the total before scheduling. Inspections are currently available in Selangor, Kuala Lumpur and Negeri Sembilan.

Contact

Tell us your situation on WhatsApp

Send a message with the place and what you need — photos of the site or equipment help.

WhatsApp usOr send an enquiry form
Phone
012-277 6383
Email
info@jomsolar.com
Office
No. 52, Jalan 1/3, Taman Seri Jaromas, 42600 Jenjarom, Selangor, MalaysiaMonday – Friday, 10:00 am – 5:30 pm
WhatsApp usCall 012-277 6383