What you need to know
Choose a solar installer by verifying the registrations required for your region, the competent people responsible for electrical work, a site-specific design, transparent ROI assumptions, named equipment and warranties, documented project evidence, a safe payment schedule and a clear after-sales process. The cheapest quotation is not automatically the lowest lifetime cost.
Key takeaways
- For Solar ATAP, SEDA states that the applicant appoints a Registered PV Service Provider for submission.
- Verify registrations directly with the relevant authority rather than trusting a badge on a proposal.
- Demand exact equipment models and a reproducible savings model.
- Keep contracts, drawings, photos, invoices, approvals, warranties and monitoring access after handover.
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1–3: Verify the company and the people doing the work
First, confirm the legal entity on the quotation and contract. Second, verify the applicable SEDA, Energy Commission, ECoS, EIU, SESCO-contractor or other regional registrations for the exact programme. Third, ask which competent person designs, endorses, tests and commissions the installation.
Registration requirements differ across Peninsular Malaysia, Sarawak and Sabah. A strong installer should explain the correct local pathway without recycling another region’s process.
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4–6: Test the design and financial proposal
Fourth, insist on a site-specific roof assessment. Fifth, review the generation and shade assumptions. Sixth, check the ROI calculation: net cost, incentive status, self-consumption, export value, tariff, degradation and maintenance should be visible.
Be cautious with guaranteed quota, guaranteed returns or a payback number that has no underlying inputs. SEDA has previously warned consumers about misleading information, overpromised returns and unauthorised providers.
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7–9: Lock down equipment, workmanship and safety
Seventh, require exact panel, inverter, cable and battery model numbers. Eighth, ask for mounting, protection, earthing and cable-routing details. Ninth, confirm who performs quality inspection and how defects are closed before final payment.
- Model-specific datasheets and warranty documents.
- Roof layout and single-line electrical diagram.
- Written substitution policy.
- Testing and commissioning records.
- Photo documentation before concealed work is closed.
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10–12: Protect the contract, handover and aftercare
Tenth, use milestone payments linked to real deliverables. Eleventh, require a complete handover pack with approvals, drawings, serial numbers, warranties and monitoring login. Twelfth, test the after-sales channel before signing: who answers, how faults are logged and what response can reasonably be expected?
A good installer makes the decision clearer rather than more urgent. The proposal should remain understandable when the salesperson is not in the room.
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A final comparison method
Place competing proposals into the same table: approved capacity, expected annual generation, self-use, export treatment, net cost, equipment, warranties, application responsibility, installation scope and aftercare. Differences become much easier to see.
Finally, choose the team you believe can complete the paperwork, install safely and remain accountable after commissioning—not merely the company with the loudest headline.
Straight answers
Frequently asked questions
Does a Malaysian solar installer need SEDA registration?+
For Solar ATAP, SEDA states the applicant appoints a SEDA Registered PV Service Provider for submission. Other regions have their own contractor and competency requirements.
Should I choose the cheapest solar quotation?+
Not automatically. Compare generation assumptions, exact equipment, scope, approvals, workmanship, warranty and aftercare. A lower initial price can omit important items or support.
What documents should I receive after installation?+
Keep the contract, approved design, electrical diagram, test records, approvals, invoices, serial numbers, product warranties, workmanship warranty, monitoring login and final photos.
Are solar-savings guarantees reliable?+
Treat them cautiously. Actual output and savings depend on weather, usage, tariff, downtime, programme rules and system condition. Ask exactly what is guaranteed, by whom and under what exclusions.
Official and primary sources
Policy and product information can change. These were reviewed on 19 July 2026; confirm current eligibility and specifications before making a purchase decision.