Indra Smart PRO

Indra is the UK's leading vehicle-to-grid (V2G) technology developer, and while the Smart PRO is a standard AC charger (it does not support V2G itself), buying from Indra positions you within their ecosystem for future V2G upgrades as the technology matures. More practically, the Smart PRO is a solid, British-designed and manufactured charger with a genuinely useful differentiator: it includes a surge protection device (SPD) as standard, which typically costs £100--150 as an add-on with other brands. The CT clamp for solar diversion is also included in the box, so you are not paying extra for solar integration hardware. Between the SPD and CT clamp, the Indra saves you up to £200 on installation extras compared to chargers that require these components to be sourced separately. Smart tariff integration works with Octopus Intelligent Go, OVO Charge Anytime, and variable tariffs through the Indra app. Dynamic load balancing and RFID lock security are built in. At £599, it is not the cheapest or the flashiest charger on this list, but it is well-built, honestly priced, and the included accessories make it one of the best value propositions when you factor in total installation cost.

Best for: Practical buyers who want to minimise total installation cost through included SPD and CT clamp, with an interest in the V2G ecosystem for the future.

Installation

The Indra Smart PRO weighs approximately 5.0 kg and measures 340mm x 240mm x 115mm, making it a mid-sized charger. The 6-metre tethered cable is a good length -- longer than the Ohme's standard 5 metres and close to the Zappi's 6.5 metres, though shorter than the Tesla Wall Connector's 7.3 metres. It is available in both tethered and untethered versions. The key installation advantage is the included surge protection device (SPD). Under the 18th Edition of the IET Wiring Regulations (BS 7671), surge protection is required for most new EV charger installations. With other chargers, your electrician needs to source and install a separate SPD at the consumer unit, typically costing £100--150 for the device plus fitting time. The Indra has it built in, which simplifies the installation and reduces cost. The CT clamp for solar diversion is also included and fitted to your meter tails during installation. The charger is IP54 rated for sheltered outdoor positions. Dynamic load balancing is built in, which means the charger automatically reduces its draw if your home is consuming a lot of electricity from other appliances, protecting your main fuse. For a full installation overview, see our complete guide to home EV charger installation.

Tariff Compatibility

The Indra Smart PRO supports smart tariff integration through the Indra app, with compatibility for Octopus Intelligent Go, Octopus Go, OVO Charge Anytime, and EDF GoElectric. You can set off-peak charging schedules to align with your tariff windows. The integration is schedule-based rather than API-driven -- you tell the charger when to charge, rather than it communicating directly with your energy provider to find the cheapest slots. This works well for fixed-window tariffs but is less effective for variable tariffs like Octopus Agile. For variable tariff users, the Ohme Home Pro remains the clear winner. The Indra's RFID lock feature is useful if you are on a workplace charging scheme or need to track usage for reimbursement purposes, as each RFID card can be associated with a different user. For a full tariff comparison, see our best EV charging tariff guide.

Price Breakdown

The Indra's headline price of £599 is mid-range, but the true value becomes clear when you account for the included SPD (saving £100--150) and CT clamp (saving £50--100 if you want solar diversion). Factoring in these savings, the Indra's effective unit cost is closer to £349--449, which makes it one of the cheapest chargers on the market in real terms. If your electrician quotes you £150 for an SPD and £75 for a CT clamp with any other charger, the Indra is effectively £225 cheaper than its sticker price suggests. For OZEV grant eligibility, see our OZEV grant guide.

How It Compares

The Indra Smart PRO's closest competitor on the V2G front is the Zaptec Go 2, which is actually V2G-ready rather than just V2G-adjacent. See our Zaptec Go 2 vs Indra Smart PRO comparison for a detailed breakdown of which approach to V2G future-proofing makes more sense. On pure value, the Indra competes with the Easee One (£405) and the GivEnergy EV Charger (£478) -- both are cheaper on paper, but neither includes an SPD or CT clamp. When you factor in installation extras, the Indra can be cheaper overall. The charger's main limitation is brand awareness: Indra does not have the install network or community size of Ohme, myenergi, or Tesla, which means fewer local installers will have experience with it and fewer online reviews are available to reference.