Nothing reported in Diamond Bar City yet
Who decides here: the City Council of Diamond Bar City votes on zoning. The Los Angeles County may review big projects too.
Local votes and rules
📌 Other · Los Angeles County
Supervisors chose a study instead of a pause. County departments will look at health, water, energy and environment effects of data centers and suggest next steps.
April 14, 2026Source
Built & runningBeing builtApproved, not built yetProposedStopped or cancelledHollow dot (when zoomed in): exact site not known yet, pin shows the town
What you can do
- Get told first.
We'll email you if anything changes in Diamond Bar City. - Go to council meetings.
Anyone can speak. Big projects usually need a public hearing. - Ask questions in writing.
Use our checklist.
🔔 Get told first
⚡ Your electric company
Depending on where you live in Diamond Bar City: Southern California Edison Co. (company) or City of Industry (not available).
Big data centers need a lot of power. Who pays for new power lines depends on state rules. See the rules in California.