How to Choose the Best Solar Company in Malaysia 2026

With hundreds of registered solar companies in Malaysia, choosing the right one is a key decision in your solar journey. A bad installation can void your roof warranty, cause electrical fires, and result in a system that underperforms. A great installer, on the other hand, delivers a system that performs as promised and backs it up with responsive after-sales service.

This guide explains the exact criteria to use when evaluating a solar company in Malaysia — and gives you a transparent view of how major installers compare.

The 7 Non-Negotiable Criteria for Choosing a Solar Company

1. SEDA RPVSP Registration (Mandatory)

SEDA (Sustainable Energy Development Authority) maintains a registry of Registered PV Service Providers (RPVSP). Only RPVSP-registered companies can submit Solar ATAP applications to TNB on your behalf. Without this, your system cannot legally export to the grid. Verify any company's RPVSP status at seda.gov.my before signing anything.

2. Workmanship Warranty (Minimum 5 Years)

The panel manufacturer's warranty only covers panel defects — it does NOT cover installation quality. The workmanship warranty covers roof penetration waterproofing, cable connections, mounting integrity, and inverter installation quality. A 1-year workmanship warranty is a red flag. Reputable companies offer 5–10 years.

3. Component Brands (Panels + Inverter)

This is where the real quality difference lies. Always ask for the exact model numbers of panels and inverter. A reputable combination for residential Malaysia 2026:

• Panels: Jinko Tiger Neo (Bloomberg Tier 1). LONGi and Trina are comparable Tier 1 brands; Trexon does not stock them (available on request)
• Inverter: Huawei SUN2000, Solis, Sungrow SG series (all with 10-year warranty and local service centres)

4. Qualified Electrical Crew

Wiring and grid connection must be done by competent persons registered with the Energy Commission (Suruhanjaya Tenaga). Always ask who will do the electrical work on your installation — not just which company — and ask to see their credentials.

5. Post-Installation Monitoring Support

Your system should generate data every day for 25 years. A good solar company will set up remote monitoring (Huawei FusionSolar, SolarEdge mySolarEdge, or Solis Cloud) and be able to diagnose performance issues remotely. Ask whether they offer monitoring alerts and regular performance reports.

6. TNB & SEDA Application Handling

The Solar ATAP application involves TNB and SEDA, and the whole process typically takes about 6–10 weeks including approvals. A professional installer handles this entirely on your behalf. Be wary of companies that leave this to you.

7. Transparent, Itemised Pricing

Any reputable company should be able to provide a fully itemised quotation showing the exact model, quantity, and unit price for every component. Vague "lump sum" quotes are a red flag. Compare apples to apples.

Overview of Major Solar Companies in Malaysia

Below is an objective overview of major solar companies in Malaysia. Note: Trexon is included as this is our blog — we've tried to be objective, but you should do your own due diligence.

Red Flags: When to Walk Away

These are warning signs that a solar company may not be trustworthy:

• Cannot show SEDA RPVSP registration number — this is a legal requirement, not optional.
• Unusually low price (below RM 2,000/kWp for a full system) — almost always means inferior components, unlicensed labour, or no workmanship warranty.
• No itemised quotation — if they can't tell you exactly which panel and inverter model they're installing, walk away.
• Pressure tactics — legitimate solar companies don't need “today only” pricing. The whole process takes several weeks of approvals anyway.
• No physical office or registered address — fly-by-night operations disappear after installation, leaving you with no warranty support.
• Cash-only payment requests — reputable companies issue proper invoices and accept bank transfers or financing.

Why Trexon Energy is Different

Trexon was built as a digital-first solar company specifically because the traditional solar buying experience in Malaysia is broken — opaque pricing, slow manual proposals, and poor after-sales transparency. Here's what sets us apart:

• AI-generated proposals: Our system produces a detailed production simulation and savings projection. Proposals include a production simulation and savings projection based on the data you provide.
• Transparent online pricing: Our pricing page shows itemised package prices. Package prices are itemised online; roof-type or site-specific extras are shown on your quote before you pay.
• Quality-first components: We use Jinko 620W N-type panels with Solis, Huawei or Sungrow inverters for residential installations. No substitutions without written consent.
• 5-year workmanship warranty: Covers all installation quality issues — roof penetrations, cable connections, inverter mounting, and commissioning.
• Customer portal: Real-time monitoring via your inverter app (Solis Cloud, Huawei FusionSolar or iSolarCloud) — see daily generation, savings, and export history.
• Full TNB/SEDA handling: We manage all paperwork, site inspections, and application submissions so you don't have to.

Ready to see what Trexon can do for your home? Use our savings calculator to get a personalised estimate. For a broader comparison of major players, see our Solar Companies in Malaysia 2026 comparison. Wondering about cost? Our guide to solar panel costs for houses covers worked examples for every house type.