If you own CCS-only DC fast chargers, the realistic way to add NACS is to swap a cable or a cabinet on some stalls, not to rebuild the site. Whether a swap is available depends on the charger model: ChargePoint says most of its stations have modular cables, and InCharge sells a cable-swap kit for two of its own charger lines. No vendor we found publishes a price, so budget from a written quote. Keep CCS on enough stalls to serve the installed base and to satisfy funding rules: federal NEVI rules require at least one permanently attached CCS1 connector per fast-charging port, and California's CALeVIP Window 2 requires at least half of a site's ports to be CCS and does not fund replacement installations. What happens to a charger's safety listing when a connector is changed is a question for the manufacturer in writing, because we found no primary source that answers it.
Updated Nov 202610 min read
OCPP is the language a charger uses to talk to the software that runs it. Versions 1.6 and 2.0.1 are not compatible with each other, so the version on the charger decides which software platforms can run it. Federal rules for highway-funded chargers (23 CFR 680.108) require OCPP 2.0.1, and California's Energy Commission requires networked chargers installed on or after September 28, 2026 to report over 2.0.1 under its uptime reporting rules, which apply to publicly funded fast chargers; CALeVIP Window 2 goes further and wants OCPP 2.0.1 certification with the Core and Advanced Security profiles. We found no rule that requires 2.0.1 at a privately funded site, but specifying it is still the safer buy, because the Open Charge Alliance says 2.0.1 is on its way to replacing 1.6. Ask every vendor for the certificate number and check it on the Open Charge Alliance register, not a marketing claim.
Updated Nov 20267 min read
Future-proofing a commercial EV install means sizing conduit and panel capacity for your full build-out rather than the initial charger count, using load management to add chargers within existing service, requiring OCPP-compliant hardware to avoid vendor lock-in, and planning for the NACS connector transition. The incremental cost of doing this right the first time is small next to retrofitting later. The federal 30C credit has ended, so build timing now rests on your own economics rather than a tax deadline.
Updated Oct 202610 min read
Sizing is really two questions: how many chargers to install now, and how much electrical infrastructure to build now. Install conservatively for current plus near-term demand; build infrastructure for a larger future. As a rough starting point, depending on property type, install chargers at about 2 to 20 percent of spaces and size conduit and panel capacity for about 10 to 40 percent, unless code requires more. The make-ready approach almost always wins.
Updated Oct 202610 min read
Site selection drives the cost and success of a commercial EV charging project as much as equipment choice does. Five factors matter most: proximity to electrical service (the dominant cost driver), parking flow and visibility, ADA compliance, future expansion capacity, and dwell-time alignment. Decisions made here are expensive to reverse once conduit is in the ground, so a physical site walkthrough beats any CAD drawing.
Updated Oct 202610 min read