u/abdcdkee

You guys know the drill I believe 😅

2 quotations for a system with 15kw inverter + 16kw battery + ~20 plates.

The team quoting 2.75M came v strongly recommended by a close friend - and dealing with them were a bit non traditional in the sense that quite professional + knowledgeable about technical aspects etc. Engineers, not just technicians...so to speak.

The 2.56M quote's from an individual who was surprisingly recommended by 4 different people independently to my father...so that's a pretty strong reference too. These guys seem more traditional but I know 5-6 people in my circle who've got it installed from them years ago and are satisfied.

I can't decide where to pull the trigger. Originally budget was 2.2M lol so probably gonna go with the 2.56M one.

Broadly speaking, the brands and quality of items across both seem to be the same. I am not sure if they'll do a good job setting up all safety precautions like RCB etc that I've seen discussed in this forum...but that's a separate aspect. Just want reviews on if the quotation seems legit or if I'm getting swindled.

I've talked to different vendors and am confused on what solar system setup to go for to manage both my house load + 7kw EV charger.

My house load is (4 bed/bath + 3 1-ton inverter ACs and 1 1.5-ton inverter AC, 2-3 ACs running almost 24/7). Rest is fridge/freezer/laundry/air-fryer/iron/dishwasher etc. My understanding is this will be about 5-6 units or so average.

In future I'd like to move towards one more 2-ton AC for lounge and induction electric stove too maybe. So kinda wanna future proof.

EV charger is 7kw of course.

I'm confused between two solar options.

10kw single-phase inverter + 12kw plates + 16kw battery.

15kw 3-phase inverter + 15-18kw plates + 16kw battery.

I don't fully understand single vs three phase problem. I've heard that 3-phase is better for load management and won't harm appliances + wiring but high load on single phase can be dangerous.

I've also heard from one installer that 3-phase inverter will have 5kw per phase so 7kw charger won't work.... but another vendor told me that 7kw charger will work 5kw on solar and 2kw on K Electric.

I'm not sure what's right from technical pov aur koi choona Laga rha hai Kya...xD

Sidenote: I've also received suggestions of either using 2kw charger for EV or that somehow restricting car charging consumption to manage the load issue (I'm not sure if byd offer the option to reduce load to 5 or 3kw?). Is this a good idea in this scenario?

Sidenote #2: I'm thinking of Solis or Inverex Inverter.... Pylontech or Dyness or BYD battery, and Longi Himo x10 Panels. I hear these are all roughly equal in quality. Kindly let me know if there any better options or which of these is best / most affordable.

Thanks to anyone who reads and shares advise 🙏

Quotation comparison 😬