The highly capable Zaptec Go 2 has scored again and passed the Mercury Trust Mark certification, which has been described as the "Bluetooth for Energy" interoperability standard.
For the 50,000+ Zaptec Go 2 units already on walls across the EU, certification is a practical change: it brings hardware that is already installed into flexibility markets without a site visit and without a new unit on the wall. The behaviour is certified once and travels with the charger to every utility that recognises the mark.
The more devices the grid can trust to respond, the more renewable power it can absorb without sacrificing stability. A flexible grid is a greener grid, and certified chargers like Zaptec Go 2 are part of what makes that flexibility dependable and enables the green energy transition.
The certification also provides the owner with reassurance that the Zaptec Go 2 they already have will keep working as the grid evolves. No upgrades, replacements or being left behind.
Mercury is the vendor-neutral certification of how a device performs for the grid: proof that a device responds, reports and performs in a predictable way, whatever the brand and whatever protocols it runs.
Device communication protocols such as OCPP connect a charger to the network it reports to. How the charger behaves once connected is a different layer, and one the protocol wasn't designed to specify. Two chargers that both meet OCPP can answer the same control signal in completely different ways. One reports telemetry every second; another only when a car plugs in. Neither breaks the protocol.
That gap creates integration work. Every time a manufacturer connects to a new utility, the same cycle starts: find the edge cases, patch the firmware, wait for the rollout. Utilities face it in reverse. One integration project per device brand.
For years, the industry agreed on how devices should talk. Mercury is about agreeing on how they should behave.
Mercury takes the OCPP standard and certifies the device behaviours that flexibility services and utilities require. For a manufacturer, one certification means each new market opens without running that cycle again.
The Mercury Consortium is a vendor-neutral nonprofit, shaped by 30+ industry members spanning OEMs, utilities, and regulators. It certifies how energy devices behave for the grid. Competing companies helped build it together.
The Zaptec Go 2 is among the first EV chargers to carry the Mercury certification mark, alongside the Easee Charge platform and Octopus Charge.
The Zaptec Go 2 certification is proof that the charger behaves consistently when called on by a utility or flexibility provider. For consumers, it's a mark they can look for to know their device works in the flexibility market.