Power Tracker — 857 Ashbury

Panel capacity

Peak recorded load Peak recorded load Highest Main watts ever seen — from the in-memory accumulator this hour and the SQLite history of all previous sessions. Only ever climbs; resets only if the database is cleared. The grey tick marks the NEC 80% continuous-load limit (24,000 W), above which sustained draw is unsafe for a 125 A service. —

0 W 24,000 W — NEC 80% 30,000 W max

Live vs expected Live vs expected Green bar is the current Main draw, updated every second via SSE. The amber marker is the learned baseline — average peak wattage for this same hour of day across all past sessions. Turns amber when live exceeds expected by more than 30%. Shows "learning…" until at least 2 data points exist for this hour. —

0 W — expected 30,000 W max

EV charging headroom

Collecting data…

Circuits Circuit status Live — probe active, reading every second Historical — probe moved, past data preserved Names sync from the Emporia app automatically.

Circuit		Now (W)	Hour max	All-time max

Breaker downgrade advisor

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Top simultaneous peaks Simultaneous peaks Each row is a real moment when whole-home load hit a recorded high. Unlike per-circuit all-time maxes, these snapshots show exactly which circuits were running together. Up to 20 events stored; lowest is replaced when a new high is recorded. 5-minute cooldown prevents a long plateau from filling all slots.

Collecting data — peak events appear once enough readings are in.

Live data stream

Whole-home peak — last 7 days

SF Permit Requirements

Permit required?Yes — SF DBI electrical permit

Who pulls it?Licensed electrician (C-10 license)

InspectionRequired before energizing circuit

TimelinePermit ~1–5 days; inspection same-day or next-day

DIY?Homeowner can pull own permit but EVSE must be inspected

Cost Estimates (SF, 2025)

New 240V/60A circuit$800 – $2,000

Panel upgrade (125→200A)$3,500 – $6,500

EVSE hardware (48A)$400 – $900 (ChargePoint, Emporia, Wallbox)

Total installed estimate$1,200 – $3,000 (no panel upgrade)

PG&E Rebates & Programs

EV Rate (EV2-A)Cheaper overnight rates for EV charging — apply at pge.com

Panel upgrade rebateUp to $1,000 via PG&E Electric Panel Upgrade Rebate Program

Federal tax credit30% of EVSE + install cost (up to $1,000) — IRS Form 8911

CA Clean Vehicle RebateCVRP closed 2023; check CARB for successor programs

Your Panel Situation

Service125A @ 240V = 30,000W capacity

NEC 80% continuous limit24,000W

48A EVSE draw11,520W — needs 60A dedicated breaker

Key question for electricianIs there a free 2-pole slot for a 60A breaker?

If no slot availableTandem breakers or panel upgrade to 200A

Ratings and contact details sourced from Google/Yelp listings. Always verify license status at cslb.ca.gov before hiring. Cost estimates are ranges for the SF Bay Area as of mid-2025 and will vary by job complexity.