Zappi, from myenergi, is widely used to divert solar surplus into the car and can sit in a small ecosystem with their other devices. Indra has sold UK chargers aimed at smart and, on specific products, bidirectional use. The products are not interchangeable. Compare the current Indra model you are actually offered with the current Zappi: solar sensor method, app, tariff integrations, whether bidirectional is real on your car, and who will install it locally. A discontinued Indra unit on a marketplace is not the same as a supported one.

What goes wrong with indra compared with Zappi for solar charging
The mistake is a comparison video that mixes a Zappi 2, a later Zappi and an Indra product from a trial as if they were one shelf.
Point at indra compared with Zappi for solar charging in the pack
Lock model numbers and the sensor in the quote.
Indra compared with Zappi for solar charging
If you only need off-peak charging, either may be more ecosystem than you need. If you need surplus diversion, compare those modes on the datasheet.
- Compare current model numbers
- Solar diversion is the useful test
- Bidirectional is a separate, rarer claim
- Match the installer to the brand
Indra compared with Zappi for solar charging: questions for the first visit
Ecosystem lock-in is a real cost when you already own a different inverter brand.
How indra compared with Zappi for solar charging moves the job
Buy the solar function you will use this year. Do not pay for bidirectional marketing unless the car maker agrees.
Frequently asked questions
Can they share one CT clamp?
Use the arrangement each maker specifies. Do not improvise a shared clamp.
Which is better with a battery?
The one whose priority settings match how you want the battery and the car to share surplus.
Are both smart-compliant?
Relevant UK private chargepoints need to meet the regulations. Ask for the specific model.
What if my installer only fits one?
Use them for the one they support, or find a competent installer for the other. An unhappy first commission is expensive.
Core buying guides
Start with these high-intent guides, then dig into the rest of the library.
Related guides
Sources and further reading
How this guide was prepared
This guide was written by the Local EV Installers Editorial Team. We compare official guidance, legislation and established consumer information, separate general information from project-specific advice, and show publication dates and sources. We do not accept installer accreditation claims at face value.