Solar panel question about voltage, 3 bdrm house 1800 SF on St John

The VI is 60Hz like the rest of North America ad residential power is the same at 120/240V.  Panel size is a variable in each house depending on the size of the house and amount of electric load.

This may be a dumb question, but hasn’t your solar guy been to the house?   If he has and is asking these questions you may need a new solar guy.   If he hasn’t, you need to get them to the house.   Solar guy should be providing you with the materials list of what to put into your container.  Every house is different and solar panels and materials aren’t one size fits all. 

Thanks, the solar guy is here in florida. We planned to ship the panels and battery down in our container along w our tile, furniture, etc. in June. But he isn’t familiar w the island. I told him we wont need to heat the pool and dont plan on having an EV charger either, so I was trying to find out what others use for their batteries. He is just trying to figure out how much power to plan for. But yeah, he doesn’t seem to smart on the topic and he owns to solar co. 🤣

There are a bunch of solar outfits locally.  I would switch gears and get with one of the local companies.   One of the biggest hold ups is materials.  If you have to buy them local they can cost a lot.  If you have to order it takes time.   Home construction (and a pretty much everything) is different here.  You really need to get the solar people to the house so they can advise.   It’s just too big of an investment to do it any other way. Vital Solar and Pro Solar are two that pop in my head.  But there are more.   Good luck!