Zaptec Go 2 vs Rolec EVO: Is V2G Worth £258 More?

A £258 Gap and a Big Bet on the Future

These two untethered chargers sit at opposite ends of a philosophical debate. The Zaptec Go 2 at £707 is banking on V2G — the idea that your Tesla will eventually feed power back to the grid and earn you money. The Rolec EVO at £449 ignores that bet entirely and instead crams as many useful features as possible into a box that costs significantly less right now.

Both are untethered, both carry a 5-year warranty, and both are OZEV-approved. The question isn't really about charging speed or build quality — it's about whether you're buying for 2025 or 2030.

In a nutshell:

• Zaptec Go 2: V2G-ready with free 4G connectivity — a future-proofed choice for early adopters
• Rolec EVO: Solar integration, dynamic load balancing, and built-in PME detection at a price that's hard to argue with

Does the Rolec EVO's Feature List Justify Its Lower Price?

This is where the comparison gets slightly absurd. The cheaper charger has the longer feature list. The Rolec EVO includes solar integration with Eco and Eco+ modes, a CT clamp in the box, dynamic load balancing, RFID with two cards, and built-in PME/PEN fault detection. That last one matters more than it sounds — many installations require a separate PEN fault device or earth rod, adding £100–200 to your install bill. The Rolec eliminates that cost entirely.

The Zaptec Go 2 doesn't include solar modes, doesn't come with a CT clamp, and doesn't have built-in PME detection. It does have a MID-approved energy meter, which is useful if you need certified billing data (landlords, shared driveways), and OCPP 1.6J compliance — though the Rolec matches it on OCPP. When you factor in the potential installation savings from the Rolec's PME detection, the real-world price gap between these two could stretch to £350–450.

Is the Zaptec Go 2's V2G Worth Paying For Today?

V2G is the Zaptec's headline feature and the main reason it commands a premium. Being V2G-ready means the hardware won't need replacing when vehicle-to-grid services become widely available. That's a legitimate selling point — if you plan to keep this charger for its full lifespan.

But here's the reality check: V2G over AC is still in its infancy in the UK. Very few vehicles currently support it, and the commercial frameworks — the tariffs, the grid agreements, the revenue models — are still being built. You could be waiting three to five years before this feature does anything useful on your wall. If you're the sort of person who bought a smart speaker in 2014, this kind of forward bet probably appeals to you. If you'd rather have tangible savings today, the Rolec's solar integration and lower purchase price deliver immediate value.

The Zaptec does have one practical advantage worth flagging: subscription-free 4G. If your charger is far from your router — a detached garage, the end of a long driveway — this solves the connectivity problem without running Ethernet or buying a Wi-Fi extender. The Rolec supports Ethernet as a wired fallback, but that still means running a cable.

Solar Owners: The Rolec EVO Is the Obvious Pick

If you have solar panels or plan to install them, the Rolec EVO makes this decision straightforward. Its Eco mode charges using a mix of solar and grid power, while Eco+ mode waits for pure solar surplus before sending energy to your car. The included CT clamp monitors your home's energy usage in real time to make this work. No extra purchases, no additional configuration headaches.

The Zaptec Go 2 can auto-switch between single and three-phase charging for solar optimisation, which sounds impressive — but on a typical single-phase UK home, that capability is irrelevant. And without built-in solar diversion modes, you'd need a third-party energy management system via OCPP to achieve what the Rolec does out of the box. For a deeper look at solar-compatible options, see our solar charger guide.

Which Should You Buy?

Buy the Zaptec Go 2 if:

• V2G readiness is a genuine priority and you want hardware that won't need replacing
• Your charger location has no reliable Wi-Fi and you need 4G connectivity
• You need a MID-approved meter for certified energy billing
• You're on three-phase power and want the option of 22kW charging

Buy the Rolec EVO if:

• You want the most features for the least money
• You have or plan to get solar panels
• You want to minimise installation costs with built-in PME detection
• You prefer buying from an established UK manufacturer

For the majority of Tesla owners on single-phase supplies, the Rolec EVO is the smarter purchase. It does more, costs less upfront, and saves on installation — a combination that's hard to beat. The Zaptec Go 2 is a well-engineered charger with a compelling long-term thesis, but you're paying a significant premium for a feature that isn't delivering value yet. If your budget stretches to £700 and V2G isn't your priority, you'd be better served looking at the Ohme Home Pro for smart tariff savings or checking our best smart charger guide for other options in that price range.