UTL vs Growatt on-grid inverters
Growatt and UTL both sell on-grid inverters for home rooftops in India. On the figures each brand publishes, UTL lists a 10-year standard warranty, and Growatt's own warranty page lists 5 years as standard with paid extensions.
Updated 26 September 2026
Growatt is a large Chinese inverter maker, sold in India through distributors and installers. The warranty a buyer ends up with depends partly on what the seller registers, which is why the figure to trust is the one written on your own warranty card.
At a glance
| UTL | Growatt | |
|---|---|---|
| Standard warranty | 10 years (3.3 kW, model GT-3P3-GX-S1) | 5 years standard factory warranty |
| Extension | Not needed to reach 10 years | Available, applied for within two years of installation |
| Efficiency, as published | Up to 99% MPPT efficiency | 98.4% maximum efficiency (MIN 2500 to 6000 TL-X/X2 Pro) |
The two efficiency figures measure different things, so neither beats the other. MPPT efficiency is how closely the inverter follows the panels; maximum efficiency is how much power it converts at its best load.
Choose Growatt if
- Your installer uses Growatt, has the monitoring set up, and will register an extended warranty in writing.
- You want the maximum efficiency figure stated outright, which UTL’s page does not give in the same terms.
Choose UTL if
- You want 10 years as the standard warranty, with nothing to apply for.
- You want the inverter, panels and a later battery from one brand and one service network, and a UTL on-grid inverter sized for your roof, from 3 kW to 5 kW and beyond.
What to ask a Growatt seller
Ask which warranty they will register, standard or extended, and ask to see it in writing before you pay. Ask who in Punjab services the inverter if it fails. The same two questions are worth asking about any inverter, including ours.
Where RSK Solar Energy fits
RSK Solar Energy is a UTL Solar distributor in Mohali. We do not stock Growatt, so we can quote the UTL side. See our UTL inverter range or start with the solar calculator.
Sources
- UTL: 3.3 kW on-grid solar inverter, GT-3P3-GX-S1, on UTL Solar’s own site
- Growatt: warranty terms and MIN 2500 to 6000 TL-X/X2 (Pro), on Growatt’s own site, checked 26 September 2026
Questions we are asked
What warranty does a Growatt on-grid inverter have?
Growatt's own warranty page gives a standard factory warranty of 5 years, with an extension that has to be applied for within two years of installation. It does not list different terms for India, so ask the seller exactly what they will register for your inverter.
Is UTL or Growatt more efficient?
They publish different measures. Growatt lists 98.4% maximum efficiency on its MIN 2500 to 6000 TL-X range. UTL lists up to 99% MPPT efficiency, which is how well the inverter tracks the panels. The two cannot be set against each other.
Does RSK Solar Energy sell Growatt?
No. RSK Solar Energy is a UTL Solar distributor. We can quote UTL on-grid inverters and help you compare them with a Growatt quote.