How to Compare Solar Quotations in Malaysia Beyond Price
The lowest solar quotation is not automatically the lowest lifetime cost. Two proposals with the same headline kW can differ in panel capacity, inverter rating, roof work, protection, monitoring, approval scope, workmanship and the assumptions used to show savings.
Normalize the system specification
Record panel brand, model, wattage and quantity; total DC kWp; inverter brand, model and AC kW; optimizer or rapid-shutdown equipment where applicable; mounting system; monitoring; and warranty terms. Do not compare only the number of panels because panel wattage varies.
Challenge the savings model
Ask for monthly generation, self-consumption, export, remaining import, tariff basis, degradation, losses and weather assumptions. Savings should be a range and should separate direct use from export treatment. Guaranteed zero bills or guaranteed payback should be treated cautiously.
Define the roof and electrical scope
Clarify tile replacement, waterproofing, structural checks, cable routes, distribution-board work, earthing, protection, meter or utility work and access equipment. A cheap proposal can become expensive when necessary work is listed only as an exclusion.
Confirm responsibility after installation
- Who handles programme submission and utility coordination?
- Who signs and keeps testing and commissioning records?
- What response time applies to inverter or monitoring faults?
- Which warranty is from the manufacturer and which is from the installer?
- What labour, transport or removal costs are excluded?
Compare all proposals against the same TNB bills, roof information and usage assumptions. HOMI can help turn competing quotes into one comparison table before you choose.
Frequently asked questions
Is price per kW enough to compare solar quotes?
No. It does not capture equipment, AC/DC design, roof work, approvals, protection, monitoring, warranty and after-sales scope.
Should a provider guarantee monthly savings?
Generation and savings vary with weather, usage, tariff and system conditions. A transparent range with assumptions is more credible than a guarantee.
What exclusions matter most?
Roof repair, structural work, distribution-board upgrades, access equipment, utility fees, monitoring and after-sales labour should be checked explicitly.
This article reflects official information checked on 1 August 2026 and is general guidance. Programme rules, tariff treatment, approval and actual savings remain subject to the latest PETRA, SEDA, Energy Commission and TNB requirements plus the property bill, roof and usage pattern.
Official sources
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