Roof survey · Lot 14, Bukit Raja, Klang
Your roof is
already an asset.
Suria Grid engineers rooftop solar for Malaysian factories and warehouses — surveyed, designed, built, energised and maintained by one company with one liability.
We design around what
the roof cannot give.
Skylights, fire access, plant decks and structural setback come out first. The usable area is what is left — and it is always smaller than the number a salesperson quotes off a satellite image.
Then we fill it,
row by engineered row.
Every module is placed against a structural check, a string layout and a wind-uplift calculation. The array below is the real yield of this roof — not the theoretical one.
- Modules placed
- 0
- Capacity
- 0kWp
- Array area
- 0m²
- CO₂ avoided / yr
- 0t
Scope
One contract. Nobody to point at but us.
Most solar disputes in Malaysia are handover disputes — the designer blames the installer, the installer blames the supplier. We do all of it, so there is nowhere for that argument to start.
- 01
Roof & structural survey
Physical inspection, purlin gauge and spacing, sheet condition, remaining roof life and a structural loading check by our registered engineer. If your roof needs replacing first, we will tell you before you spend anything.
- 02
Yield & financial modelling
Site-specific irradiance, shading analysis, and your actual TNB bills for twelve months — not a national average. You get the model, including the assumptions we used.
- 03
Detailed design
String layout, DC and AC single-line diagrams, cable schedules, earthing and surge protection, mounting and ballast design to MS 1837 and the wind loading for your zone.
- 04
Approvals
TNB application, Energy Commission (ST) registration and NEM or CGPP quota filing. We carry the paperwork; you sign where you have to.
- 05
Build
Our own installation crews, not a labour subcontract. Full site safety file, a supervisor on site every day, and production kept running throughout.
- 06
Commission & monitor
Testing to IEC 62446, thermographic scan, as-built drawings and O&M manuals handed over. Monitoring per string, with an alert if any one of them underperforms its neighbours.
- 07
Operate & maintain
Scheduled cleaning, annual thermography, inverter servicing and a performance report every quarter that compares actual against the model we sold you.
Programmes
Four ways to own it, and the one that suits you.
The right structure depends on your load profile, your tax position and whether you own the building. Here is the honest comparison.
| Programme | Capex | Who owns it | Best when | Watch for |
|---|---|---|---|---|
| Self-consumption (SelCo) | You | You | Daytime load is high and steady — a two-shift factory | Oversizing. Every exported unit is worth far less than one you use |
| NEM Nova | You | You | Load is daytime-weighted but uneven, so credits carry the gaps | Quota. It is finite and it does run out mid-year |
| Solar PPA / lease | None | Us, for the term | You want the tariff saving without the balance-sheet entry | Term length and the buyout table. Read both |
| CGPP (corporate green power) | You | You | You need certified green energy for a customer or a group target | Aggregation rules and the reporting obligation that follows |
We are agnostic. Suria Grid earns roughly the same on a cash sale as on a PPA over its life, which is deliberate — it means the recommendation you get is not the one that pays us best this quarter.
The numbers
A 560 kWp roof, modelled over twenty-five years.
This is the array you watched land above, on a real Klang rooftop profile. Every assumption is printed underneath, because a payback figure without its assumptions is marketing.
- Cumulative savings
- Capital outlay
- Break-even
Modelled, not measured. Your figures will differ.
- System size
- 560 kWp DC / 450 kW AC (903 modules)
- Installed cost
- RM 1,740,000 (RM 3.11 / Wp)
- Year-one yield
- 1,340 kWh / kWp
- Self-consumption
- 86% of generation
- Displaced tariff
- RM 0.52 / kWh, medium voltage general
- Tariff escalation
- 2.5% a year
- Module degradation
- 2.0% year one, then 0.45% a year
- O&M cost
- RM 29,000 a year, escalating 3%
- Inverter replacement
- Year 13, RM 165,000
- GITA allowance
- Excluded — treat it as upside
Programme
Twenty-two weeks, and where they actually go.
Installation is the short part. Approvals are the long part, and anyone who tells you otherwise has not done many of these.
- Weeks 1–2
Survey & feasibility
- Weeks 3–5
Design & financial model
- Weeks 6–14
TNB & ST approvals
- Weeks 10–14
Procurement & shipping
- Weeks 15–19
Installation on site
- Weeks 20–21
Testing & commissioning
- Week 22
Energisation & handover
Production does not stop. We work around your shift pattern and, on a live roof, section by section so no part of the building is ever without weather protection overnight.
Work
Fourteen roofs, 6.8 MWp, all still monitored.
We publish the operating fleet rather than a portfolio of photographs, because what matters about a solar array is how it performs in year six, not how it looked in week one.
- Bukit Raja, KlangRubber products560 kWp
- Nilai, Negeri SembilanFood processing1,140 kWp
- Pasir Gudang, JohorChemical storage880 kWp
- Shah Alam, Selangor3PL warehouse1,460 kWp
- Kulim, KedahElectronics assembly740 kWp
- Senai, JohorFurniture manufacturing520 kWp
- Rawang, SelangorBuilding materials1,440 kWp
Fleet performance ratio, trailing twelve months: 81.4% against a modelled 80.0%.
Equipment
Named brands, named warranties, in the contract.
Every quotation we issue names the exact module and inverter model. If a supplier substitution becomes unavoidable we ask you first — it does not appear as a surprise on the delivery note.
- Modules
- Tier-1 n-type TOPCon, 610–630 W. 12-year product and 30-year linear performance warranty, 87.4% at year 30.
- Inverters
- String inverters, not central. One failure takes out a section, never the site. 10-year warranty, extendable to 20.
- Mounting
- Aluminium rail on stainless clamps for metal deck; ballasted on concrete. Non-penetrating wherever the roof warranty demands it.
- Cabling & protection
- Double-insulated DC, UV-rated trunking, Type II SPD on both sides, and a dedicated DC isolator per string.
- Monitoring
- String-level, with your own login. Data is yours and exportable — we do not hold it hostage at contract end.
Questions
What finance directors actually ask.
Will it void my roof warranty?
It can, and this is the single most common expensive mistake. We check the roof warranty terms before design and use non-penetrating mounting where it is required, coordinating with the original roofing contractor where they are still trading.
What happens when there is a grid outage?
A grid-tied system shuts down — that is a safety requirement, not a fault. If you need generation to continue through an outage, that needs a hybrid inverter and storage, which we will quote separately and honestly.
How much roof do you actually lose to exclusions?
On a typical Malaysian industrial roof, between 25% and 40% once skylights, fire access, setbacks and plant are removed. Any proposal that assumes 90% coverage has not been to the site.
Do panels really need cleaning here?
Yes. Klang Valley dust and haze can cost 4% to 8% of yield between monsoons. Our O&M includes two cleans a year, and we will show you the before-and-after generation data rather than asking you to take it on faith.
What if we sell or vacate the building?
On a cash purchase the array is a fixture and transfers with the building. On a PPA there is a novation clause and a published buyout table — ask for both at quotation stage, not at signing.
Send us a roof.
Give us the address and twelve months of TNB bills. You get back a measured usable area, an indicative capacity, a yield model and a payback range — before anyone visits and before you owe us anything.
- Desktop assessment at no cost, returned in a few working days
- Physical survey quoted separately and credited against the build
- We will tell you if your roof is not worth doing
Engineering office
03 5101 9200 survey@suriagrid.exampleSuria Grid Sdn Bhd
Unit 8-3, Tower B, Icon City,
Jalan SS8/39, 47300 Petaling Jaya,
Selangor
Office Mon – Fri, 08:30 – 17:30
Registration ST Contractor · SEDA Registered PV Service Provider