Start with the way you use electricity

Before comparing system sizes, gather a few recent electricity bills and note how your household or business typically uses power throughout the day. A proposal should make clear how its recommended system relates to your actual needs, rather than relying on a generic package description.

Ask the provider to explain the assumptions behind its recommendation. If your usage changes seasonally or you expect a major change, such as adding new equipment, mention it early. This gives you a better basis for comparing proposals on the same terms.

• Bring several recent bills to the discussion.
• List any expected changes in occupancy or electricity use.
• Ask what information was used to size the proposed system.

Check how the design fits the property

A system proposal should account for the property’s roof and practical installation requirements. Ask how the roof layout affects the proposed arrangement, and whether any parts of the design depend on assumptions that still need to be checked at the property.

Compare the explanation, not just the number of panels or quoted system capacity. A clear proposal should help you understand why the suggested design suits your property and what questions remain before installation can proceed.

• Ask which property details shaped the proposed design.
• Request a plain-language explanation of any site assumptions.
• Compare proposals that use the same household or business needs.

Compare the full decision, not one headline figure

When reviewing costs, check that each proposal describes the same scope. Look for a clear breakdown of the proposed system and related work, and ask whether any items are conditional on the property assessment. If you are comparing financial returns, ask what assumptions the calculation uses and how changes in energy use could affect it.

A lower initial figure may not represent the same scope as another offer. Before deciding, make a list of what each provider has included and clarify any unclear or excluded items in writing.

• Compare the described scope alongside the quoted amount.
• Ask what assumptions are used in any financial estimate.
• Clarify items that depend on a site check or later approval.

Ask how approvals and ongoing support are handled

If Net Energy Metering (NEM) is part of your plan, ask who will guide the application and approval steps with TNB and what information you will need to provide. Inhome Solar says it assists with TNB application and approval procedures for NEM, so you can ask how that assistance applies to your proposed project.

Also review the after-sales terms before you commit. Inhome Solar describes warranty coverage and maintenance services tailored to the package; ask for the specific terms for the proposal you receive, including what is covered and how to request support.

• Confirm whether NEM is relevant to your project and what the process involves.
• Ask for the proposal-specific warranty and maintenance terms.
• Find out what support is available after commissioning.

Use a consistent checklist when speaking with providers

Inhome Solar provides solar solutions for residential and commercial properties and says its recommendations are tailored to energy needs and property requirements. When asking for a proposal, share the same bills, property details and priorities with each provider so you can compare their reasoning fairly.

The company lists its headquarters in Seri Kembangan, Selangor. If you are considering solar panel installation Seri Kembangan, that location gives useful context for your enquiry, but confirm directly whether the company can assess and undertake work at your particular property.

• Share the same usage information with each provider.
• Ask for the design rationale, scope, financial assumptions and support terms.
• Confirm property-specific availability before making plans.

Frequently asked questions