Solar energy adoption in Malaysia has accelerated significantly, driven by falling panel prices, rising electricity tariffs, and a government incentive framework that now covers everything from 3kW home systems to megawatt-scale industrial rooftops.
But the landscape changed in 2026. The Net Energy Metering (NEM) programme that drove residential adoption for years closed to new applications in June 2025. Solar ATAP — its successor — became the governing framework from January 2026 onwards.
If you’re new to solar and want to start with the fundamentals first, our What Is a Solar PV System? guide explains the components and system types in plain terms. This guide is for those ready to look at costs, sizing, and the installation process in Malaysia.
Understanding which programme governs your system is the first step.
NEM (Net Energy Metering): Under NEM, surplus solar energy was exported to the grid and credited against your TNB bill at the same rate you pay for grid electricity — a one-to-one offset. NEM closed to new applications in June 2025. Existing NEM systems continue operating under their approved terms.
Solar ATAP (Skim Tenaga Akaun Pengurusan – ATAP): Solar ATAP is the current programme for new solar installations in Malaysia. It maintains net metering mechanics — surplus generation is exported and credited against your bill — but operates under updated terms, capacity limits, and administrative processes managed by SEDA Malaysia. For a full breakdown of eligibility and application steps, read our Solar ATAP Malaysia guide.
Key Solar ATAP updates relevant in 2026:
If you’re considering solar in 2026, Solar ATAP is the programme that applies. Any installer still referencing NEM for new applications is working from outdated information. For a detailed comparison of programme options, see our Solar ATAP vs SELCO guide. For a detailed breakdown of how on-grid, off-grid, and hybrid system types interact with Solar ATAP, that guide covers it separately.
Residential system costs in Malaysia depend on size, panel quality, inverter brand, and installation complexity. Here’s a general guide:
System Size | Panels (approx.) | Indicative Installed Cost | Monthly Bill Reduction (est.) |
|---|---|---|---|
4kW | 8–10 panels | RM 18,000–RM 25,000 | RM 150–RM 250 |
6kW | 12–15 panels | RM 25,000–RM 35,000 | RM 220–RM 350 |
8kW | 16–20 panels | RM 32,000–RM 42,000 | RM 280–RM 450 |
10kW | 20–25 panels | RM 38,000–RM 50,000 | RM 350–RM 550 |
These ranges assume standard rooftop conditions, SEDA-approved equipment, and full TNB commissioning included. Partial shading, non-standard roofing, or complex electrical upgrades add cost. For a more detailed breakdown, read our solar panel installation cost guide.
For a residential system under Solar ATAP, a payback period of 5–8 years is the realistic range for most Malaysian homeowners. This assumes:
Households with high daytime electricity usage self-consume more of their solar generation — which is more financially valuable than exporting surplus. Not sure how to calculate your actual consumption? Our guide to reading your TNB electricity bill for solar helps you pull the right numbers from your bill.
A common starting point: size your system to cover 80–100% of your monthly electricity consumption, staying within your roof’s available panel space and Solar ATAP’s approved capacity limits.
Practical sizing guide:
These are starting points. Your installer should produce a generation estimate based on your specific roof orientation, panel tilt, and local irradiance data — not just your bill size.
For guidance on selecting the right solar panel brands for your system, read our guide to evaluating solar panel brands in Malaysia.
Not every roof is equally suitable. Key considerations:
For a detailed checklist of roof requirements before solar installation, read our roof solar panels Malaysia guide.
Businesses in Malaysia pay more per kWh than residential customers under TNB’s commercial and industrial tariff schedules. This means every kWh your solar system generates — and you consume directly — displaces a more expensive purchase from the grid.
For a business on a medium voltage commercial tariff paying RM 0.35–RM 0.45/kWh (versus residential rates of RM 0.22–RM 0.33/kWh), solar generation is worth proportionally more.
Additional business-specific advantages:
Businesses with large roof areas — factories, warehouses, office complexes, shopping lots — can install systems ranging from 20kW to multiple megawatts. For a complete overview of commercial solar in Malaysia including system types, application processes, and ROI benchmarks, read our commercial solar Malaysia guide.
A practical business sizing approach:
A certified solar contractor should present a financial model showing annual savings, payback period, and 25-year net present value based on your specific tariff and consumption data.
Understanding the timeline reduces surprises. Here’s what the full process looks like:
Step 1 — Site Assessment (1–2 weeks)
Your installer conducts a roof inspection, shading analysis, electrical panel assessment, and meter review. This determines system size, placement, and any preliminary structural or electrical work needed.
Step 2 — System Design and Quotation (1–2 weeks)
A system design is produced, including panel layout, inverter selection, single-line diagram, and generation estimate. SEDA-approved equipment is specified.
Step 3 — Solar ATAP Application to SEDA (2–6 weeks)
Your installer submits the Solar ATAP application on your behalf. SEDA reviews and issues an approval letter. Approval timelines vary by region and application volume.
Step 4 — Installation (2–5 days)
Panels, mounting, inverter, metering equipment, and wiring are installed. A licensed electrical contractor signs off on the electrical work.
Step 5 — TNB Inspection and Commissioning (2–6 weeks)
TNB inspects the installation and commissions the export meter. Once commissioned, your system is live and Solar ATAP credits begin.
Total typical timeline: 2–4 months from deposit to commissioned system.
Quotes vary widely in quality. Here’s what a credible proposal includes:
Warning signs in a quote:
For a full installer evaluation checklist, read our guide to choosing the right solar installer in Malaysia.
No. The Net Energy Metering (NEM) programme closed to new applications in June 2025. All new solar installations in Malaysia operate under Solar ATAP as of January 2026. Existing NEM systems continue under their original approved terms.
An unregistered system connected to the grid violates TNB’s terms of supply. You cannot legally export to the grid, and TNB has the right to disconnect your supply. All grid-connected solar installations in Malaysia must be registered under an approved SEDA programme.
For residential tenants: you’d need your landlord’s permission, and the system would typically remain with the property. Most tenants do not install solar for this reason — solar is primarily a homeowner decision. For businesses renting commercial premises, longer-term leases (10+ years) with landlord agreement can make installation viable, particularly if the landlord is willing to cost-share.
Yes, but at reduced output. Malaysia’s equatorial climate means more cloud cover than temperate solar markets, but the country still receives strong annual irradiance. A well-designed system accounts for Malaysia’s cloud and rain patterns in its generation estimate. Panels continue producing on overcast days — typically 10–30% of clear-sky output.
Surplus generation is exported to the grid and credited to your TNB account at the applicable Solar ATAP rate. This credit offsets your monthly TNB bill. If your credits exceed your bill in a given month, the balance carries forward. Read our Solar ATAP Malaysia guide for the exact export rate and crediting mechanics.
Someone should be on-site to provide access to the roof, electrical distribution board, and TNB meter. The installation team handles everything else. TNB commissioning later typically requires the premises to be accessible for the TNB inspector.
Solar panels are low-maintenance. Periodic cleaning (2–4 times per year in Malaysia’s dusty and pollen-heavy environment) maintains output. The monitoring platform your installer sets up will flag any generation anomalies. Your inverter should be visually inspected annually. RayGoSolar includes post-installation support as part of their service — any performance issues are raised through your assigned contact.
Panel output degrades gradually — most tier-1 panels are warrantied to produce at least 80% of rated output at 25 years. At that point, you can continue operating with slightly reduced output, upgrade to newer, more efficient panels, or decommission. Inverters have a shorter lifespan (10–15 years typically) and will likely have been replaced once during the system’s life. RayGoSolar’s 20-year inverter warranty covers this replacement cost within the warranty period.
The right solar power system for your property depends on your roof, energy consumption, tariff category and long-term goals — not a standard package. RayGoSolar’s certified engineers design and install systems based on your specific site requirements, with full Solar ATAP registration and TNB commissioning handled on your behalf. Inverter warranties typically range from 5 to 10 years, depending on the brand and model selected.
