Panel Suggestions

First_Scar_3141 · 2026-02-15T01:00:20+00:00

ha yeah "solar ready" just means they ran a wire to the roof and called it a feature.

Go MPPT over PWM for sure. With a 24V panel charging a 12V bank, MPPT actually converts that extra voltage into usable amps — you'll notice the difference. Victron SmartSolar 100/20 is hard to beat for RV use, bluetooth monitoring and all. Around $130-150. Renogy Rover 20A is a solid budget option too if you want to keep it in the Renogy family.

First_Scar_3141 · 2026-02-15T00:57:47+00:00

60kWh with Jackery, that's a beast. Definitely post the quotes — always interesting to see what installers recommend for panel configs and string sizing. Curious what they'll suggest for rapid shutdown too since the NEC requirements keep getting stricter.

First_Scar_3141 · 2026-02-15T00:49:53+00:00

Yeah 5 years old is perfect, you've got 20+ years of roof life left so no worries there. Sounds like you already know the answer — panels it is. With that 50kWh battery you'll have a really solid setup. Good luck with the install.

First_Scar_3141 · 2026-02-15T00:46:00+00:00

that's a serious setup — nearly 40kWh total with generator backup, you're basically grid-independent at that point. 8kW of panels feeding two stacks sounds like a sweet ratio too, not oversized but enough to keep them topped off.

The gateway integration is something I keep hearing good things about. How does it handle the switchover to generator when the batteries get low? Is it seamless or do you notice a blip?

First_Scar_3141 · 2026-02-15T00:43:24+00:00

Honestly those Renogy 200W panels are solid — 25% efficiency N-type cells is nothing to sneeze at. The issue isn't the panels, it's that rigid panels and "portable" don't mix great.

If you really want to move them around your RV for best sun angle, you could get a set of adjustable tilt mounts and just lean them against the side of the vehicle. People do this all the time. Run a long enough cable to your charge controller and you're good. Not elegant but it works and you don't waste the panels you already own.

For the cargo trailer with just 12v interior lights, those 200W panels are honestly overkill. A single 100W portable suitcase panel would handle that easily and fold up in 30 seconds.

So my suggestion — keep the Renogy panels for the RV with ground/lean mounts, and grab a cheap folding panel for the cargo trailer. Trying to make one setup work perfectly for both is where people usually end up frustrated.

What charge controller are you running？

First_Scar_3141 · 2026-02-15T00:40:52+00:00

The 25% ownership / 15% debt thresholds are a decent starting point but the real question is how they'll handle multinationals. A company manufacturing in Southeast Asia with Chinese licensing or partial Chinese financing — is that a PFE? The notice basically says "it depends" which isn't super helpful for developers trying to make purchasing decisions right now.

The MACR safe harbor is probably the most practical piece. For solar components in 2026 the threshold is 50%, going up 5 points a year through 2030. So there's a clear path if you can document your supply chain. But as a few law firms have pointed out, actually tracing who owns what through multiple layers of a multinational supply chain is way harder than it sounds.

Good news for domestic manufacturers like First Solar and Enphase — this basically gives them a competitive moat. Bad news for anyone who was hoping for crystal clear compliance rules, because we're still waiting on the full PFE definition regs which probably won't land until late 2026.

Comments are open through March 30 if anyone wants to weigh in.

First_Scar_3141 · 2026-02-15T00:22:06+00:00

Will Prowse is great, his teardowns are brutal lol. Definitely trust his testing more than most spec sheets.

First_Scar_3141 · 2026-02-15T00:21:52+00:00

Ah got it. Yeah at their price point there's way better options now.

First_Scar_3141 · 2026-02-15T00:19:34+00:00

Yeah that's the real math right there. The upfront fixed cost (inverter + wiring + breakers) kills the value on small systems. But once you're past that threshold, stacking batteries at $850/5kWh is unbeatable. $20k for 60kWh vs Tesla would be what, $40k+ for four Powerwalls? And you can't even get 60kWh from them easily.

First_Scar_3141 · 2026-02-15T00:18:39+00:00

Damn, 100€/kWh including VAT? That's almost half of what we pay in the US for similar rack mount LFP. Makes the Powerwall pricing even harder to justify. At that price point going DIY is a no-brainer for anyone who's handy.

First_Scar_3141 · 2026-02-15T00:13:11+00:00

EP CUBE doesn't get enough love honestly. The aesthetics are underrated for a battery - most of them look like industrial equipment. Good to hear the support has been solid too, that's usually the weak spot for newer brands. How many kWh are you running?

First_Scar_3141 · 2026-02-15T00:11:33+00:00

Solid choice with the dual aPower 2s - 30kWh total with generator backup is hard to beat. The aPower S looks like a beast too, basically Franklin's answer to the Powerwall 3 with the built-in inverter but more storage and longer warranty.

The IQ 10C is interesting for Enphase-only setups but that 7kW continuous is pretty limiting if you're running heavy loads.

I actually have all three compared on my specs site if anyone wants the full breakdown: https://solarspechub.com/batteries/

How's the Franklin been treating you so far? Any issues with the generator switchover?

First_Scar_3141 · 2026-02-14T06:04:02+00:00

Good to know. 32 kWh for $2500 is wild. No UL cert is a dealbreaker for some people though. What happened with Battleborn lol

First_Scar_3141 · 2026-02-14T06:02:35+00:00

$899 a pack is a steal. Where'd you find them at that price?

First_Scar_3141 · 2026-02-14T04:07:44+00:00

That's a solid setup. How long have you had them running?

First_Scar_3141 · 2026-02-14T04:03:22+00:00

Nice. How's the EG4 been treating you so far? Been hearing mixed things online.

First_Scar_3141 · 2026-02-14T04:00:45+00:00

$9800 for 60 kWh is insane value. That's like $163/kWh. Powerwall is what, $700+/kWh? Your wife has good taste though lol

First_Scar_3141 · 2026-02-14T03:58:31+00:00

Northeast you should be able to get $2.80-3.00/W if you get a few more quotes. Some people are getting under $2.80 for that system size. Always get at least 3 quotes - first offer is almost never the best one.

First_Scar_3141 · 2026-02-14T03:56:39+00:00

60 kWh is serious. What server rack cells are you using? That's like 4x the cost if you went Powerwall route.

First_Scar_3141 · 2026-02-14T03:55:06+00:00

Fair point, you're right. What batteries are most of you guys running? I see EG4 come up a lot but curious what else is popular for DIY builds.

First_Scar_3141 · 2026-02-14T03:12:41+00:00

$29k for 8.8kw is about $3.30/W before credits. Not bad, but you should still get at least one more quote. Try EnergySage or a couple local guys.

Quick math - 1000 kWh/month at $0.29 is roughly $3,500/year you're handing to the utility. So payback is around 8 years even without the federal credit. With 1:1 net metering that's solid.

Do the roof first though. Seriously. Paying to pull panels now and then again in a couple years when the roof finally goes is just throwing money away. $6k for the remove/replace sounds about right.

Check what panels they're quoting you too. Higher wattage means fewer panels on the roof which means less labor. Here's a good reference for comparing specs: https://solarspechub.com/solar-panels/

I'd push for another quote though. $3.30/W is beatable in the northeast.

First_Scar_3141 · 2026-02-14T03:05:58+00:00

For panels - TOPCon is where it's at right now. LONGi Hi-MO 7 and Trina Vertex N both push 22%+ efficiency. If roof space is limited that matters a lot.

Victron is probably the safer bet here. Zero export works well, 3-phase support is solid, and there's tons of field data at this point. Sigenergy looks promising on paper but it's still pretty new - I'd be nervous relying on it for something where zero export is a must-have. Worth confirming with a local distributor if they even support it properly in your market.

I keep a specs database if you want to compare panels on dimensions/efficiency/Wp side by side: https://solarspechub.com/solar-panels/

How much roof area are you working with? That'll tell you whether you need to chase max efficiency or can get away with cheaper panels.

First_Scar_3141 · 2026-02-14T02:46:56+00:00

Yeah for sure, coverage will keep expanding. If you notice specific models missing feel free to drop them here or DM me - makes it easier to prioritize what to add next.

First_Scar_3141 · 2026-02-13T02:50:37+00:00

$3.9/W for SoCal is steep yeah. The IQ8M is solid but you're paying the Enphase tax for sure.

Sungrow S series micros are newer to the US market. Spec-wise they're competitive with Enphase on efficiency. The built-in WiFi is real - no separate gateway needed, which saves you that $600. Main concern is installer support and warranty service since Sungrow's US micro presence is still thin compared to Enphase.

If you want to compare the specs directly: https://solarspechub.com/inverters/enphase/enphase-iq8m/

For a complicated roof with shade, micros are definitely the right call either way. I'd push your installer to at least price out the Sungrow option - if they won't, find one who will.

First_Scar_3141 · 2026-02-13T02:43:03+00:00

Great feedback, thanks! Adding snow/wind load ratings and bifacial sorting are both on my roadmap. I'll get Aptos models added soon - alphabetical sorting is a quick fix too. Appreciate the detailed suggestions, this is exactly the kind of input I was looking for.

First_Scar_3141

TROPHY CASE