California type evaluation is the state’s weights-and-measures approval of a measuring device’s design — its “type”. Because a commercial EV charger sells electricity by the kilowatt-hour, California treats it as a commercial measuring device: before a model can be placed in commercial service, its metering design must pass type evaluation, run by the California Department of Food and Agriculture’s Division of Measurement Standards, and hold a Certificate of Approval.
Key Takeaways
- Selling charging by the kilowatt-hour makes a charger a commercial measuring device in California.
- Type evaluation approves the model’s metering design and ends in a Certificate of Approval for that model.
- Installed units face a second, field layer of inspection and sealing by county officials.
- No EVDANCE page states a California or NTEP certificate — confirm the exact model’s position in writing before purchase.
Why a Charger Is a Measuring Device at All
Weights-and-measures law starts from a simple idea: when something is sold by quantity, the device measuring it must be approved and accurate. A petrol pump may not open on the maker’s say-so; its design is evaluated and individual pumps are inspected and sealed. A charger billing per kilowatt-hour is the electrical version of the same transaction — the driver cannot see or count the product, so the state verifies the meter.
Type evaluation follows the sale by measure, not the charger itself: a charger given away free, or billed by the session or by parking time rather than by energy delivered, sits outside the per-kilowatt-hour trigger as the programme frames it.
The moment a California site sells energy by the kilowatt-hour, the measuring-device rules attach — which is why metering accuracy becomes a procurement topic, as our guide to smart meters for EV chargers explains from the hardware side.
How Type Evaluation Works
| Step | What happens |
|---|---|
| Submission | The manufacturer submits the charger model — the type — for evaluation. |
| Laboratory evaluation | The design is tested against California’s electric vehicle fueling system specifications, built on the national Handbook 44 framework: metering accuracy, readable display, clear pricing, honest indications. |
| Certificate of Approval | A passing model receives a Certificate of Approval naming the model — the artefact a buyer asks for. |
| Field layer | Installed units are registered, inspected, tested and sealed by county officials, and can be failed in the field even when the model is approved. |
Two consequences follow. Approval binds the model, not the brand: a certificate for one station says nothing about its siblings, and a hardware or metering change can mean a fresh evaluation.
And type evaluation approves measurement only — a different gate from electrical safety listing, so a charger can hold one and lack the other; a commercial California site needs both answered. Our guide to EV charger certifications sets out the safety side. California also accepts a national NTEP certificate in place of its own in defined circumstances; which route a model took is part of the same check.
The Buyer Check, Before Money Moves
For a site operator, the procedure is short and entirely paper-based:
- Ask for the certificate: request the Certificate of Approval number for the exact model you are buying, not a brochure claim of “California compliant”.
- Verify it: check the certificate against the Division’s records, and confirm it covers per-kilowatt-hour billing.
- Plan the field layer: expect county registration and inspection of installed units, and price the process into the project.
- Match the billing model: if approval is not in place, the options are to wait, choose an approved model, or bill in a way that does not sell by measure.
What This Means for EVDANCE Hardware in California
The EV-AC03201T dual-connector AC station (two Type 2 connectors, up to 43 kW shared, OCPP 1.6J, RFID, IP54) is the natural EVDANCE candidate for a California workplace or public site, within our wider commercial charging range. But no EVDANCE product page states a California Certificate of Approval, or a national NTEP certificate, for any model. Treat that as an open item: before specifying EVDANCE hardware for a California site selling by the kilowatt-hour, get the exact model’s certificate position confirmed in writing, as of October 2026. State infrastructure programmes, such as California’s $95.2 million zero-emission infrastructure plan, can add requirements of their own.
Frequently Asked Questions
Is type evaluation the same as a UL or ETL listing?
No. A safety listing says the equipment is electrically safe; type evaluation says its measurements can be trusted for selling by quantity. A commercial charger can need both.
Does a home charger need California type evaluation?
No. The programme covers commercial measuring devices; a home charger nobody pays by the kilowatt-hour is not selling fuel, so approval does not attach.
If the model is approved, is my installed unit automatically compliant?
Not automatically. Type approval covers the model’s design; installed units still go through registration, inspection and sealing, and an individual unit can be rejected if it measures inaccurately or is installed incorrectly.
Related Reading
- Do You Need a Smart Meter for an EV Charger?
- EV Charger Certifications Explained: CE, UKCA, UL, ETL, CB and What Buyers Should Ask For
- California Approves $95.2 Million Plan for Zero-Emission Vehicle Infrastructure
