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In my travel trailer:

Stumbled across the Powerflo batteries now listed on NAZ's website. Ship dates are stated as "end of August to early September." Powerflo5: $1,099 https://www.solar-electric.com/midnite-solar-mnpowerflo-5-48-volt-server-rack-mount-lfp-battery.html Powerflo16: $3,999...

Nylon lock nuts are the most economical and user friendly. Their effectiveness is reduced slightly each time they're removed and reinstalled but you can usually get a few uses out of them. Here's a great video showing the resistance to vibration of different options. Yes it's an ad for...

My total before any tax credit is just under $23k, will be right around $16k all said and done. $14k for 1x 18kpv, 1x Powerpro, 20x Qcells 410W, Tamarack racking, Tigo RSD's, shipping. $9k for an electrician to install and hook it all up, including conduit, wiring, 2x MTS, and permit fees. My...

This is what I've seen for NEM3 with PG&E

How does the second stage condenser not freeze over? Heat pump efficiency drops off a cliff below freezing because they have to periodically reverse refrigerant flow to defrost the condenser, which requires energy but is counter-productive to heat generation. Are these systems that much more...

5kWh on my travel trailer 14kWh for my house (coming soon)

My litimes will rest around 13.7v at full charge. Charge voltage I use 14.2v and they usually will cut themselves off a little over 14.5v.

I made my own for 4 batteries in parallel on my camper trailer.

Quick update: I gave up trying to find a comparison under NEM3 showing the "added" benefit of selling back to the grid. So I started playing with Excel and built my own calculator. After doing this, I'm leaning heavily toward the EP Cube system. The results are (in order of original...

I'm in the same situation: V2.06 but no encryption option. On V1.5.2 of the Android app. Edit: meant to quote techguy but you get the idea.

Plenty of people (myself included) have installed a lifepo4 battery in their car without any problems. If vehicles can tolerate that, a battery in the trailer is nothing.

So turns out I was wrong on the sunset date for the property tax exemption: it's the end of 2026 not 2024. Effective September 18, 2022, Senate Bill 1340 (Stats. 2022, ch. 425) amends section 73 to extend the new construction exclusion for active solar energy systems from 2023-24 to the 2025-26...

Bring the battery up to what you know is a full charge regardless of what the shunt says then you can calibrate the shunt to 100%. Then you should see more accurate values.

Hi Vince, welcome! Sounds like a fun project. The good news is that with a generator you always have a backup so you can experiment a bit (if you want). Check your power center, it may or may not be compatible with charging lithium batteries from the engine/generator since they run at a...

Simple enough, see below. The averages are skewed high by a few extremes; they're all equal or greater than the P50 values (not shown). Coverage will vary depending on the system but for around 15 kWh (12 kWh @ 80% DoD) a good chunk of the nights (7pm-9am) are covered. Where I'm at doesn't get a...

Thanks for the response, you bring up some good points. I'm a very handy person and don't mind a more hands-on approach to setting up and managing the system. Heck, if I could build my own system from scratch that's the route I would go. Unfortunately I'm stuck with what PG&E approves so all I...

My original question that I was looking for information on was whether spending more on a setup capable of export would result in a reasonable ROI on that additional cost. In my case I'm looking at the Sol-Ark/Pytes setup vs the EG4 setup but the same general concept would apply when comparing...

To be clear, I very much appreciate the discussion and have learned a ton from everybody on this thread. So thank you :)

Ah gotcha. I would either do RSDs only or the optimizers. The monitoring built in with the optimizers would be nice but on its own it's not that important to me. Besides, the cost of RSDs w/monitoring is barely any less than using optimizers that have the monitoring included ($6 per module)...

The production vs usage numbers seem reasonable for a 6kW south facing system: The MidNite One looks nice and would fit the bill (even with "only" 100A pass through), but until it's fully certified and on the list of approved equipment for CA it's a non-starter. Also, on timing, doesn't the...

Here's maybe a better illustration of what I'm dealing with (pre-tree trimming). I don't expect to get much of anything from panels once they become shaded but I do want to minimize the impact the shaded ones have on the remaining ones. That's what I'm trying to accomplish. Would optimizers...

Interestingly, cutting down to a single 5kWh battery actually increases the ROI slightly compared to three of them: it adds 0.1 year. I understand what you're saying though since that would be equivalent to a system with 4 Pytes batteries (20 kWh) for the price of roughly 2 Pytes batteries. The...

My calculator is as basic as it gets: when the battery is at the upper SoC limit, excess solar goes to grid. If there's not enough solar and battery is at the lower SoC limit, draw from the grid. It references the NEM 3 table but doesn't optimize in any way to game the timing of exports. The...

Has it been approved for PCS export and just waiting for the listing or does it still need to be approved?

Thanks all for the feedback. I understand what you're all saying but for the sake of this discussion let's assume these panels will work well enough to justify their existence but will still have some amount of recurring shade in the afternoon. Doing more research it looks like the internal...

What happens in a situation where <50A of inverter power is available due to battery SoC and/or PV output but the loads exceed that? Say PV production can only supply 10A but loads are 15A... does the 18kpv draw 5A from the grid to supplement the inverter or does it draw all 15A from the grid...

Thank you for taking the time to lay all of that out, it's really helpful. I looked into these guys and they've got some good products at decent prices, all approved like you said. My only reservation is they've only been around since 2022 so who knows how much longer they will be. Your point...

I'm designing a rooftop system for my house that's going to be subject to shading from nearby trees (see image). Both trees will be trimmed down to minimize their impact but won't be going away entirely. The shade I describe below is before any cutting has been done to the trees. This is in...

Huh, how about that. Can someone explain to me why my total battery charge is 40kWh greater than my total battery discharge? They were reset at the same time 2 weeks ago. Is my one 14.3 kWh battery hiding 26kWh from me???

Good point. I've run the numbers and it's at most $28/year cheaper with my projected usage on EV2-A or E-TOU-C compared to E-ELEC w/o export. So that cuts it down to $170/year, which would still be worth exporting. That sounds nice and all, but since I don't have a generator and won't be AC...

Not an expert but I've set up my trailer similarly and it's been working so far. Here are a few thoughts on your schematic: -Are you planning 12v or 24v? I assume by the DCDC converter the answer is 24v. If 12v you need to revisit some wire and fuse sizes. -If your solar panel Voc can reach...

To set the tone, this is entirely out of curiosity. These panels are already installed and I have no reason to be dissatisfied at this time. I bought some Qcells Q.PEAK DUO ML-G10+ 410W panels from Signature Solar. There was no mention of bus bars but the SS part number ended with -6BB so I...

@EG4TechSolutionsTeam any update on 9540 certification?

How would they enforce it?

That's great news! Any idea on timing for them listing it?

If that's the case, is the maximum capacity of these types of inverters equal to the inverter PLUS the pass through? Take the 18kpv as an example, is the max capacity actually 250A, 50A (12kW) inverter + 200A pass through? Because that might change my opinion on some of the options.

Microinverters would be the ticket but expensive like you said. I'm going to get 2 additional panels instead of the optimizers and split up the array into two parallel strings of 7 panels. The additional panels will also help keep voltage where the MPPTs need it to be in the parallel...

The 18kpv has 3 mppts, the first of which has 2 inputs. The performance of one mppt does not impact the others. As long as each of your strings is connected to its own mppt then you're good. I have 3 strings on my 18kpv (no optimizers). 2 are on the same roof that experiences shading and 1 on...

Talking about the 18kpv. Maybe it was a misunderstanding in the thread below but I agree if it can't do that then that's a big deal. https://diysolarforum.com/threads/ac-bypass-mode-sol-ark_15k-vs-eg4_18kpv-vs-tesla-powerwall_3.86968/#post-1146179

I'm planning out the setup for my house and trying to navigate the sea of requirements for selecting an affordable hybrid system that's approved by PG&E. Here are the most affordable options with similar specs as far as I can tell, in order of my preference: 1) EG4 18kpv + EG4 Powerpro x1 Pros...

The only mention I could find in the manual is the last sentence below. If it can blend power in this scenario it should be able to in others as well. 13.1.2 PV CHARGE PRIORITY MODE The order of priority for solar power usage will be Battery>Load>Grid. During the PV Charge Priority period...

Any update on timing for this? There haven't been any changes to EG4 inverters on the approved list and they still don't say approved for PCS.

Thanks for the info and suggestions. I'll look into these a bit more in the coming days. Excellent advice.

I should clarify: this will be used with an 18kpv and each string will have its own dedicated MPPT (3 strings total - 2 South and 1 West). These panels have enough voltage with 4 in series to get into the MPPTs' operating range so there's some but not a lot of wiggle room, hence my comment about...

I'm unclear if it includes labor costs but to keep the math simple, 1% of a $20k system means an additional $200/yr in property taxes. That alone wipes out roughly 7% of annual savings (assuming a nice round $3k/yr targeted savings). It's not massive but it's not nothing either.

Little help on this? I'm new, IDK EG4 accounts on here.

Very interesting! Thanks for taking the time to explain. Now you've got me thinking, and that's scary. I'm using my powerpro with voltage for battery control since my BMS board was DOA and won't communicate (waiting on a new one). Which I suppose further cements your opinion on EG4 BMS's. This...

With my layout I'd need 8x dual module RSDs (TS4-A-2F @ $46) plus 2x single (TS4-A-F @ $30) for a total of $428. 18 Optimizers (TS4-A-O @ $43) cost $774. But they also require a TAP ($57) and CCA ($138), plus an enclosure and some wiring (say $50) for a total of $1,019. After tax that's right...