PG&E Greenbook
Also known as: GreenbookPG&E Electric Service Requirements
The PG&E Greenbook is Pacific Gas and Electric's published rulebook for how to connect to its electrical grid. It sets the requirements for the service entrance — where the meter goes, what kind of disconnect is allowed, how the conductors are sized, what clearances are required around the meter. The current edition is the 2026 Greenbook (PG&E document TD-7001M), effective June 22, 2026; PG&E revises it periodically.
Unlike the NEC or CEC (which govern wiring inside your home), the Greenbook governs the interface between your home and PG&E's grid. Even if a panel meets CEC requirements, PG&E can refuse to energize it if it doesn't meet Greenbook standards.
One Greenbook rule shapes a lot of panel work: like-for-like replacement. A new panel with the same amperage rating, in the same location, that matches the old one's shape, layout and number of meter sockets may not have to meet every current Greenbook requirement. Anything else (more amperage, a new location, or a panel that doesn't match) is an upgrade and has to meet all of them. PG&E still disconnects and reconnects the service either way.
PG&E is the utility for all of Santa Cruz County. Every grid-connected home here is governed by the Greenbook. Service entrance work that doesn't meet Greenbook spec can sit unenergized for weeks while PG&E reviews — a real problem after a panel upgrade.
We stay current on Greenbook revisions because they change the actual workflow on your job. Whether a panel swap counts as like-for-like or as an upgrade decides what the new installation has to meet, so we settle that before we quote. The physical scope is still a full service rebuild either way.
Met this term in a quote or inspection report?
A free whole-home inspection turns jargon into a written assessment of your actual house — you keep the report either way.