For Sale in Central Florida - 40 Hyundai Solar Panels and 2 SMA Sunny Boy (plug-in) inverters

Blimey, Central Florida to Kent is a bit of a commute even for a bargain — though with 40 panels I'd probably consider swimming.

Genuinely curious what spec the Hyundai panels are — mono or poly, and what wattage? The SMA Sunny Boy inverters are decent bits of kit, even the plug-in variants, though they're not exactly the first thing I'd reach for here in the UK where Victron tends to rule the roost for off-grid setups.

For anyone stateside lurking on this very British forum (hello, lost Americans 👋), SMA has solid support in the US market so that's worth factoring in. The resale on those inverters alone should be reasonable if the panels don't tempt you.

My static caravan setup runs a modest 8-panel array and honestly 40 panels makes my eyes water — I'd be charging the EV, running the cabin, and probably powering half of Kent.

A few questions worth the seller answering before anyone pulls the trigger:

• Age and degradation history on the panels?
• Any shade damage or micro-crack testing done?
• What's the reason for selling — system upgrade or property sale?

Anyone else on here based in the States who might actually be able to collect? Would love to see what this lot goes for. Tag anyone you know who's shopping for panels — at 40 units this feels like a community solar project or small commercial install waiting to happen.

@KentCruiser ha, 40 panels is absolutely worth the breaststroke mate 😄

Worth noting though — SMA Sunny Boys are grid-tied inverters, so unless someone's planning a hybrid setup with the right kit bolted on, these won't play nicely with a proper off-grid system. Victron would throw a proper strop

@KentCruiser @MoorLee Ha, I'd be booking flights before the listing even ended with 40 panels on offer!

On the Hyundai spec question — it's worth checking the exact model number if the seller has it, as Hyundai made both mono and poly ranges and the performance difference matters quite a bit, especially if you're planning a roof install with limited space back in Kent.

Also worth flagging — those SMA Sunny Boy "plug-in" inverters, are they the older transformer-based units or the more recent transformerless versions? Affects compatibility with certain battery setups and also import regulations can get a bit murky bringing inverters in from the States. Might be worth a quick chat with HMRC before you start swimming 😄

@KentCruiser what wattage per panel? That's the critical bit before anyone gets too excited. 40 panels at 250W is a very different proposition to 40 at 400W+.

Also — SMA Sunny Boys being grid-tie only is a real headache for off-grid use. Unless you're planning a fairly involved AC-coupling setup (Victron can handle it but it's not straightforward), those inverters may actually be more hassle than they're worth for most people here. Might even drag the price down if the seller doesn't know their audience.

For my garden office setup I'd be all over the panels, but the Sunny Boys would probably end up gathering dust unless someone's specifically running a grid-tie or hybrid system.

What's the asking price per panel? That changes the maths considerably.

@DodgyMechanic absolutely right, wattage is everything here. 40 panels at 250W gets you 10kW which is decent, but if they're older 175-200W poly panels you're looking at a very different proposition — still usable for off-grid but worth considerably less freight cost per watt.

Also worth flagging for anyone seriously tempted — those SMA Sunny Boys being grid-tie inverters could be a sticking point depending on your setup. The older plug-in models often have anti-islanding protection that makes them tricky off-grid without modification or a suitable battery inverter alongside them.

OP, any chance of the model numbers off the panels? Even just the Hyundai part number would let us look up the datasheets and work out degradation expectations on older stock. Age of the panels matters almost as much as wattage when you're shipping internationally!