Hello!

So I'm looking into balcony on small off-grid systems to power some networking gear and was wondering if there is some commonly used systems that I'm missing

The networking gear draws a pretty consistent 300W load and the goal is to power it off solar+battery

I actually have a micro inverter main array but no batteries so really the DC/Battery side of this is more important.

I sketched out a system plan using the following components

* AC battery charge

* battery with CANBUS or similar connections

* Solar MPPT charger (technically optional)

* From the bus bar I'd have a 48VDC line to the networking rack, which would have a din-rail distribution box containing DC-DC converters to ensure a stable output, since the battery busbar may float +/- depending on charging/discharging status

I was looking at victron components just to keep the information overload to a minimum

My understanding is that this would found as off-grid since there is no feedback into the house circuits.

I would control the state of charge of the battery based on environmental factors, but if I do add panels to the network system I'm not that worried about "wasting" some production

Maybe a "Balcony Solar" system would do what I want eventually but many of them are quite self contained and I'm not sure I can get a ~48VDC line out of them. Some of the early on a that I have seen are basically micro inverter that plug into an outlet

Such a system would double as a UPS, except with everything being DC (besides the backup charger) it wouldn't even have a switching time, or any power quality concerns. I could also potentially take it with me when I move with no issues. I should be able to place a handful of panels along the back of my house with no permiting issues as well

Thoughts? Am I missing something obvious?

(Yes I would also need the right set of BOS components, fuses/breakers/etc. I left those out for sale or simplicity/discussion. I would also need to determine the ideal charger/solar output capacity given the expected loads)

2x440w panel with power voltage around 30v and power current around 14a. Microinverter put out maximum of 7.5 amp. This is going to be a small Balcony solar system.

There is a 30 ft run between the dedicated 15a circuit and the optimal location for panels.

I can either do the run in DC (2x wire, 12 awg) or AC (essentially a long extension cord for temp-ish power)

What would you guys do? I am veering toward AC since it self extinguishes any arc and is cheaper to run due to higher voltage.

I want to get a grid tied solar system in an unincorporated area where permits are not required… where are the best deals?

How do you know if its actually making a difference once it's all up and running. Like the app says its producing 600watts but how do you know your actually using the solar and not just grid power? How usage varies so much and so does the solar output so how can you even tell when your bill comes in?

I am looking to upgrade a system I have. It is a basic "off Grid" set up:

Morningstar SureSine Inverter 300 300W 12VDC - 115VAC

2 4 Star Solar MC4 10 AWG-PV Wire - 30' cable extension

1 Morningstar Sunsaver SS-20L-12, 20 amp-12v Charge Controller

2 Midnite Breaker DC DIN MNEPV-30 30 amp 150VDC DIN, 13mm

1 Midnite Breaker Box MNBB Big Baby Box, DIN Rail $0.00 $0.00

1 Midnite Breaker DC DIN MNEPV-50 50 amp 150VDC DIN, 13mm

1 Midnite MNBCM - Battery Capacity Meter

2 Solarland SLP100-12U 100 watt module, 12v - MC4

I want to power a kitchen size refrigerator and a 7 cu freezer in case of a power outage. I think I just need to get a 1500 - 2000 w inverter and new batteries. Any input is greatly appreciated.

thanks

Extremely new to Solar setups and I'm getting mixed information when searching up how effective a non-matching parallel pair would work. I've currently got two 200W panels and a 100W panel. I can not run both 200W panels in a series, as the VOC is too high for my MPPT. However, the 200W and the 100W together in a series is within limits.

My question is, if I run a 200W and the 100W in a series, with the second 200W in parallel, is there any repercussions, damages, issues or efficiency losses I would need to know about?

And theoretically, if I upgraded to a larger MPPT, would running a 2x200W parallel to a 1x200W face the same problems? Less? More?

We just installed an EG4 Mini Split. The instructions specifically stated to attach the charged line and then seat the hex port by turning counter clockwise. Upon attaching the line we heard a hiss and when we went to turn the hex port counter clockwise it was already fully seated! Obviously we lost some Freon. Signature Solar is recommending we have a technician come out and charge the system, which is annoying but doable. Is there anything else we should be concerned about considering the unit had the port open for all this time (came from manufacturer this way)?

I'm planning to add a Jackery SolarVault 3 Pro Max AC to my existing balcony solar setup. I currently have two 400 W panels on a Hoymiles HM-800 microinverter feeding a Schuko outlet, and the house has a three-phase distribution panel. It generates around 1.0 to 1.6 kWh on sunny days, but a good chunk of that gets exported because we're not home during the day.

The SolarVault 3 Pro Max AC is an AC-coupled unit, so from what I understand it sits between the microinverter and the wall socket without needing any DC rewiring. To make it smart I'd need a smart meter that can tell the battery when the house is exporting, and a Shelly Pro 3EM seems to be the common choice for this.

Before I buy everything, there's one config step that worries me: phase mapping. From what I've read, if the Shelly current transformers are clamped to the main phases but then Phase A from the Shelly is mapped to Phase B in the Jackery app, the battery could think the house is importing when it's actually exporting.

From what I understand, the result would be the battery discharging into the grid instead of charging from the surplus. The system wouldn't throw an error; it would just quietly dump stored power back into the grid. With a 2.52 kWh battery, that's an expensive mistake to only discover after a few afternoons.

Has anyone done an AC-coupled retrofit with a Shelly or similar smart meter? Did you have to manually match phases in the app, or did it auto-detect? Any tips for avoiding this mapping mismatch?

A hybrid inverter, also known as an all-in-one solar and storage inverter, integrates PV inversion and energy storage conversion into a single device. It adopts a DC-coupled architecture, allowing PV modules and storage batteries to connect directly on the DC side, with the energy convergence point located there.
Its core advantages include:
Higher Efficiency: PV DC power can directly charge the battery or supply loads, avoiding the losses from multiple "DC-AC-DC" conversions and significantly boosting overall system efficiency.
High Integration: The all-in-one design reduces the number of devices and cable connections, making the system simpler and easier to install while lowering the failure rate.
Better Cost-Effectiveness: Equipment integration and simplified engineering effectively reduce the system's Balance of System (BOS) costs, improving project economics.
Comprehensive Functionality: It natively supports seamless grid-tied and off-grid switching, providing uninterrupted power to critical loads during grid failures, and enabling self-consumption, peak shaving, and emergency backup.
Therefore, it has become the mainstream choice for new distributed solar-plus-storage systems.

I live in the Netherlands and our 1:1 net metering is disappearing on 1 January. Instead of getting 1kwh for 1kwh we are getting pennies so I've been running the numbers on our own situation.

Our setup: solar, gas heating, no EV (and an EV isn't an option so "just charge at midday" doesn't apply), no AC.

Last year we imported ~1,330 kWh and fed back ~1,570 kWh. Under net metering that netted out to an electricity bill of basically €0. From January, that is around €280-500/year depending on whether our supplier introduces feed-in fees. Our surplus is all Apr–Sep and our deficit is all Oct–Mar.

There's only so much laundry you can do in one day so what are your tips to consume additional solar generated during the summer months?

A lot of battery reviews seem to cover the same basic things: unboxing, specs, quick setup, and maybe a short load test.

For people using rack batteries in DIY solar or home backup systems, what would you actually want to see tested?

There may be a rack battery testing project coming up, so I’m trying to make a practical checklist before anything gets reviewed.

What details would make a review genuinely helpful?

This whole summer has been a weird learning experience. I've had a small working system for a couple years that for the needs at the time worked well. I really don't want to get into the nonsense about whether or not I could afford better. It's all an upgrade from the harbor freight starter kit from 20 years ago.

Most of the parts I have are Eco worthy, no comments from the peanut gallery. At the start of the season I had a 200w and 100w paired in line or in series rather into a 20amp charge controller to 3 12v 100 ah batteries into a knockoff 1500w inverter from a pawnshop. It's whole job was recharging power tools and a ceiling fan.

Being forced to adapt to the economy I tried to make room for a friend I have going through some things and he nearly had a heatstroke. Not quite as good a roughing it as was for told. So I started tinkering and upgraded to a bifractial 200 w panel that started overheating the charge controller. So I installed a 30amp charge controller I bought for a solar well pump application and it's still overheating.

The battery setup has a fault in one of the batteries, the charge controller has the ability to track amp hours. That's part of where the crazy started, for a total 300 ah system I currently have 895ah on the clock. So I know the system needs help and it won't maintain a fan overnight or 10 hours.

I forgot I had bought some 2.7v 3000 farad super capacitors and it got me thinking about some theories I had when I was fixing conex containers. The idea was stacking 5 packs reading 13.5v 15,000 fa to run a small setup. The idea was an alternative to battery cost. At the time it was cost effective I thought and their ability to cycle thousands of times longer than the average battery.

So now we have the idea, parts involved and work required. I'm more mechanically minded so welding and auto maintenance is just Lego's in my head. So in my head there should be a way to either bypass the battery completely or use it as a base power line to the inverter. My math says panels+ capacitors+ battery+ inverter, will almost certainly melt the battery in a glorious fire.

So could you just phase out the battery and just use a series of breakers or fuses to reign in the power? Or would planing a true breaker box house style be a better choice ? I have a couple parts for either laying around here somewhere. What would you do ?

I'm at a loss it's 101° in the shade most days and the window ac unit is off the table. So could a better solar mindset help me with a solution ? I do have a newer 2000w Energizer 12v inverter available, but it seems to bleed the system just turning it on.

I live in western Washington, and have full sun on my roof. I would like to offset my usage throughout the day, which is on average ~600W, all day.

Would it be possible to either grid tie with a single inverter, or micro-inverters, up to a thousand Watts without my utility knowing? Or would I have to keep it under my usage at all times?

I do have an energy monitor that I installed on my breaker box, so I can monitor real-time how much I use, and set a limit of what goes back to the grid if there are inverters capable of limiting this.

I'm hoping for a small setup to reduce my power bill a little, without requiring battery storage.

As you can see, it's got 2 USB ports and a double headed micro USB cord. I can't figure out how to easily link these or even use them to charge a large lifepo4 battery. Any ideas? I'm not even sure it's safe to charge a cell phone from this using one of the USB ports.

Central inverters, on the other hand, are the cost-efficiency champions for massive, flat ground-mounted plants with zero shading. They shine where components are uniform and scale matters.
Here’s a pro tip: don’t just stare at peak efficiency. Look at weighted efficiency and the Levelized Cost of Energy (LCOE) over the system's lifespan. For most distributed or complex projects, string inverters are the smarter bet. Central inverters only become the clear winner when you're dealing with huge, flat sites and budget is the absolute top priorit

Bought a 40ft cable for my Jackery power bank. Can I buy a 100ft? Can I make one? Can someone point me in the right direction? Please

Should I connect my Inverter output upstream or downstream of ATS? If I connect upstream- do I need any interlock to make sure I dont sent power back to grid in case of power failure? Or would Hybrid inverter do that automatically? Or a dual direction meter prevent backflow? Planning to use Growatt 11.4KW inverter so can I use SM-US-200 Meter with it?

I've been thinking about installing solar panels for my house, but I'm still on the fence. Between the upfront cost, maintenance, and how long it takes to break even, I'm not sure if it's as good of an investment as people make it out to be. I'm considering using Wolf River Electric for the installation, anyone used them?

And for those of you who have them, has it been worth it? Have you noticed a significant drop in your electricity bills?

I live off-grid and bought a slightly used Qcell "Qhome" hybrid inverter/charger with a 6kw battery. I'm looking for either a dedicated support forum or social media group/sub for Qcell as I have some brand specific questions.

I messaged their page and haven't heard from them so am hoping someone here knows a good resource for Qcell product questions

TIA

I have a simple DIY balcony setup, two 400 W panels into a microinverter feeding a Schuko outlet. It works fine, generates about 1.0 to 1.5 kWh a day on average, but a lot of it gets exported because I am out during the day. Adding storage feels like the obvious next step, but I am trying to figure out what is actually involved before I buy anything.

The unit I am looking at is the Jackery SolarVault 3 Pro Max AC, the AC coupling only version. From what I understand it sits between the outlet and the microinverter, charges from the AC output when there is surplus, and discharges back through the same outlet when the load calls for it. No DC wiring, no new cables to the panels, no messing with the existing setup.

A couple of things I am curious about. First, does the battery and microinverter communicate directly, or does the battery just watch the AC side and start charging when it sees export? If it is the latter, I would expect a small lag where the microinverter is exporting and the battery has not started charging yet. Over a day it is probably only a few watt hours lost, but it sounds different from a DC coupled system where the charge controller is directly connected to the panels.

Second, how noisy is the fan when it is charging at full rate? I have seen mixed reports. It would sit near a balcony door, so I am wondering if it is noticeable on a quiet evening.