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Free solar planning tools

See what solar could look like on your roof.

Plan the panel layout, explore the estimate and prepare a proposal for an installer conversation.

Plan my roof See an example proposal

Start planning without an account. A planning estimate still needs a site check and a supplier quotation.

Find panel angleEstimate production

Production estimates are available for supported cities. Supplier availability depends on service areas.

From panel layout to proposal
Actual SizeSolar proposal figure showing six proposed panels in a fictional roof layout
Actual proposal output with fictional inputs. This is a layout diagram, not a satellite photo or a verified installation design.
Example layout
6 panels · 2.7 kWp
Your next step
Check with an installer

Know what you are working towards

A proposal you can discuss.

Bring the layout, selected equipment, estimated costs and assumptions into one readable document. Use it to ask better questions before committing to a system.

  • The proposed system: panels, inverter and battery equipment.
  • The estimate: modelled costs, benefits and what is excluded.
  • The next steps: confirm your usage, verify the site and obtain a quotation.
Open example PDF (new tab)

Two pages, generated by SizeSolar. Fictional equipment, usage and prices in USD demonstrate the format; these are not your costs, expected savings or a supplier offer.

First page of the actual fictional SizeSolar proposal, including estimated investment, equipment and roof layout

Three steps to a clearer plan.

  1. 01

    Locate and plan your roof

    Find the right property, draw the panel areas and check the roof direction and pitch. Keep obstacles and installation clearances in mind.

  2. 02

    Check your estimate

    Add your electricity use and review the equipment, production and cost assumptions. Adjust the inputs to explore your plan.

  3. 03

    Discuss the proposal

    Save a proposal, compare available supplier options and ask an installer to verify the site and provide a written quotation.

For solar suppliers and installers

Help turn a plan into an installation.

List your service areas, products and quote options. Review how the supplier workflow works before deciding whether it fits your business.

For suppliers and installers Find suppliers map

Listings and enquiries depend on your service area and customer demand.