THE SHORT ANSWER
A change order should state the reason, old and new scope, price, timing and design effect. Approve it through the contract’s authorized process before work proceeds.
Define a material change
Equipment model or quantity, array layout, roof work, electrical upgrades, battery configuration, trenching, price, financing and completion timing can all matter. Ask the agreement which changes require owner approval and who is authorized to issue them.
Require a complete comparison
A useful change order names the triggering discovery, original scope, revised scope, added or removed cost, schedule effect and any production-model change. Attach updated drawings and equipment sheets. “Field condition” without the condition and consequence is not a reviewable explanation.
Protect financing clarity
CFPB warns that solar-specific financing can involve dealer fees, loan markups and confusing payment structures. [1] If project price changes, require the lender or provider to show the resulting financed amount, payment schedule and total obligation before acceptance.
Keep promises in the signed record
FTC solar guidance advises getting promises in writing and reading agreements. [2] Do not rely on a text saying a cost will be “taken care of” while signing a document that assigns it differently. Preserve both clarification and controlling revision.
Close the change at handoff
Confirm installed equipment, final price, inspection documents and monitoring inventory reflect every accepted order. List cancelled or superseded changes. This process does not prevent unexpected conditions, but it prevents the project record from splitting into incompatible versions.
Before your next conversation
- Define approval-required changes.
- Compare old and new scope.
- Recalculate financing effects.
- Reconcile all changes at handoff.
Primary sources
- Federal Trade Commission: Solar Power for Your Home
Primary source reviewed September 10, 2026. Utility rules, equipment availability, project design and contract terms remain specific to the property and proposal.
- Consumer Financial Protection Bureau: Issue Spotlight on Solar Financing
Primary source reviewed September 10, 2026. Utility rules, equipment availability, project design and contract terms remain specific to the property and proposal.
Planning examples and questions are Origin’s editorial guidance, not a property-specific diagnosis, engineering design, tax determination or promise of savings. Manufacturer and utility references do not imply an affiliation with Origin.
Make the decision specific to your home.
Use an Origin Direct review to understand a proposed change order.
Book an Origin Direct review →Scope, pricing and availability are confirmed for your property. A request is not a confirmed appointment.