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Configure solarHow Solar Energy Works
in Malaysia
From sunlight hitting your roof to savings appearing on your TNB bill — here is everything you need to know, in plain language.
How Solar Panels Generate Electricity
Four things happen every time sunlight hits your roof — all automatically, every day.
Sunlight Hits Panels
Photovoltaic cells in each panel absorb photons from sunlight and release electrons, creating direct current (DC) electricity.
DC Electricity Generated
The DC electricity flows through wiring from all your panels down to the inverter, which is usually mounted on a wall inside your home.
Inverter Converts to AC
The inverter converts DC into AC (alternating current) — the same type of electricity that powers your lights, air-cons, and appliances.
Powers Home + Exports to TNB
Your home uses solar power first. Any surplus is automatically exported to the TNB grid, earning you credits to offset nighttime consumption.
The Installation Process
From your first call to flipping the switch — here is the complete 6-step journey.
Free Remote Consultation + RM100 Priority Site Visit (Fully Credited)
Day 1Our solar consultant visits your property, assesses your roof orientation and shading, and analyses your TNB bills to understand your energy consumption pattern.
Custom System Design
Day 2–3Our engineers design an optimal system size for your roof and consumption profile — choosing the right panel count, inverter capacity, and cable routing.
Financing & Paperwork
Week 1Choose your payment method (cash, green bank loan, hire purchase, or PPA). We handle SEDA registration and TNB interconnection applications on your behalf.
Installation
Week 2–4Our SEDA-registered installation crew mounts panels on your roof, runs DC cabling, installs the inverter, and connects everything to your distribution board. Most homes take 2–5 days.
TNB Meter Upgrade
Week 4–6TNB replaces your existing meter with a bidirectional smart meter that can measure both your consumption from the grid and your export back to it. This step is handled by TNB directly.
System Goes Live
Week 6–8We commission your system, configure your monitoring app, walk you through your dashboard, and hand over all warranties. From this day, you start saving.
What Size System Do You Need?
Match your current TNB bill to the recommended system size and see your estimated savings.
| Monthly TNB Bill | Recommended System | Estimated Savings | Payback Period |
|---|---|---|---|
| RM 200 | 3 kW | RM 120–160/month | 6–7 years |
| RM 400 | 5 kW | RM 240–340/month | 5–6 years |
| RM 600 | 8 kW | RM 380–520/month | 5–6 years |
| RM 800+ | 10–15 kW | RM 550–800/month | 4–5 years |
* Estimates based on Peninsular Malaysia tariff rates. Actual savings vary by location, roof orientation, and usage profile. Use our calculator for a precise estimate.
How You Get Paid for Surplus Solar
Under Malaysia’s Solar ATAP (Selfgen Tenaga Boleh Baharu) programme, any electricity your panels produce that exceeds your home’s immediate needs is automatically exported to TNB’s grid. TNB credits your account for every unit exported at the Displaced Cost Rate (currently around RM 0.31–0.39 per kWh, depending on your tariff tier).
Net Metering
Credits offset your bill — surplus exported by day reduces charges at night.
No Battery Needed
TNB's grid acts as your virtual battery. No upfront battery cost required.
Credits Roll Over
Unused credits roll over monthly. They are deducted from your next TNB statement.
Frequently Asked Questions
Answers to the questions we hear most often.
How long do solar panels last?
Quality solar panels are warranted for 25 years and typically last 30+ years. Panel efficiency degrades by around 0.5% per year, so after 25 years they still produce around 87% of their original output. Inverters have a shorter lifespan of 10–15 years and may need one replacement over the system lifetime.
Do solar panels work on cloudy days?
Yes — solar panels generate electricity from daylight, not direct sunlight. On overcast days in Malaysia, panels typically produce 10–25% of their peak output. Since Malaysia averages 4–5 peak sun hours per day even in the monsoon season, your system will still generate meaningful savings year-round.
What happens at night?
Solar panels produce no electricity at night. Under Malaysia's Solar ATAP programme, any surplus energy you export to TNB during the day earns you credits that offset your nighttime consumption. Most homeowners achieve near-zero bills through this day/night balancing without needing batteries.
Do I need batteries?
Most Malaysian solar owners do not need batteries, because TNB's grid effectively acts as a free "virtual battery" through the Solar ATAP net metering programme. Batteries become worthwhile if you experience frequent blackouts or want full energy independence. We can advise you on whether battery storage makes financial sense for your situation.
How much can I save on my electricity bill?
Typical savings are 60–90% off your TNB bill. A household spending RM400/month on electricity can expect savings of RM240–360/month after going solar. Most 3–5 bedroom homes in Malaysia achieve payback in 5–7 years and enjoy 18–20 years of near-free electricity after that.
Is my roof suitable for solar?
Most Malaysian roofs are suitable. We look for: at least 150 sq ft of unshaded roof space, a roof pitched between 10–30 degrees (flat roofs also work with tilt frames), and structural integrity to bear the panel weight (~12 kg/m²). Tile, metal, and flat concrete roofs all work well. Our RM100 priority site visit will confirm your roof's suitability, and the full RM100 is credited when you proceed.
Ready to Go Solar?
Use our free calculator for a remote savings estimate, or book the RM100 priority site visit. The full RM100 is credited when you proceed.
Learn More
Solar Financing Options
7 ways to fund your solar system — from RM 0 upfront to full cash purchase
Solar Packages & Pricing
Browse 3kW to 30kW systems with transparent pricing
Solar Calculator
Get a precise savings estimate based on your TNB bill and roof size
Is Solar Worth It in Malaysia?
Honest pros and cons of going solar in Malaysia 2026
Solar ATAP Programme Guide
How net metering works and how to maximise your export credits
How to Choose a Solar Company
What to look for — certifications, warranties, and red flags