Do not order the new service panel before confirming utility requirements

Availability does not establish utility acceptance

Service equipment should be released for purchase against confirmed utility requirements, not just an amperage and a distributor stock number. The procurement risk is a design mismatch that the project team can check before the order becomes difficult to change.

A reported relocation shows why the accepted layout matters

In a Bay Area Reddit discussion about upgrading underground service, the owner reported conflicting schedule estimates. One commenter said PG&E would not permit the planned solar/battery work until a meter too close to the gas meter was moved; the commenter described relocating it and trenching. Those are individual reports, not proof that a particular model will be accepted or rejected. The purchase-release method below is an author-proposed way to manage that design uncertainty.

Source: Upgrading electrical panel to 200amps

Name the applicable Greenbook and EUSERC requirements

Use PG&E’s Electric and Gas Service Requirements, known as the Greenbook, with the applicable updates and project direction. PG&E posted its 2026 edition on April 24, 2026. Its stated transition permits projects whose applicant contract was sent before that date to continue under 2022/2023 requirements for up to 18 months from the contract-sent date. Record which path applies instead of treating whichever PDF is easy to find as current.

EUSERC, the Electric Utility Service Equipment Requirements Committee, publishes service-equipment requirements and drawings. Have the equipment submittal identify the relevant utility and EUSERC references where applicable, together with the exact catalog number, service configuration and required accessories. An EUSERC description on a product listing is not blanket PG&E acceptance for any location or service arrangement.

Source: PG&E Project Resources: 2026 Greenbook, updates and transition rules · EUSERC: service equipment requirements and annual manual

A discounted panel can become the wrong purchase

Illustrative scenario: an owner purchases a discounted panel intended for a service upgrade. Utility review later requires a different metering configuration or location. The equipment may be difficult to return, and the revised layout can alter conduit, clearances, and finish work. A procurement hold point would have allowed the project team to confirm the requirements before turning a design assumption into a sunk cost.

Prepare an equipment approval sheet

Create an equipment approval sheet with the exact model, relevant ratings, dimensions, metering arrangement, proposed location, and who has reviewed each aspect. Identify any remaining conditions. If equipment lead times are long, discuss a conditional order or approved alternatives with the supplier and design team, but do not imply that ordering early guarantees the utility will accept the choice.

Review substitutes against the same accepted design

Control substitutions carefully. Two enclosures with similar advertised amperage may differ in configuration, listed accessories, connection space, or other project-relevant characteristics. The contractor should review the actual replacement product against the approved design before delivery. Keep a record of who authorized the substitution and whether drawings or permits need updating. Avoid field improvisation to make an unapproved product fit.

Check delivered equipment before starting an outage

At installation, verify the delivered equipment matches the accepted schedule before removing the existing service. That simple check can prevent an outage from beginning with the wrong component on site. Retain final model information and approvals in the closeout package. Procurement is part of coordination, not merely shopping; the right sequence protects schedule and budget without requiring the owner to become an expert in utility equipment standards.

Make the cost of an early order visible

Before approving a conditional order, record the supplier’s cancellation and return terms, the unresolved design question and who accepts the financial risk. Track shipping separately from utility construction or reconnection appointments. If the owner later changes the load or location, review equipment compatibility again before treating an already purchased panel as fixed design input.

Put it into practice

A decision table to keep handy