diy solar

diy solar

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  • Post in thread: Coming Energy Prices …..

    One thing is painfully obvious to me, we will have an even more significant energy crisis in the future. Even without the Russian events this year, energy has been significantly under invested for almost the last decade. It takes a long time to turn the ship. Largely shutting the world down...
  • Post in thread: Do Hybrid Inverters pull from Grid/Solar/Battery at the same time?

    I went through the same. Every time I thought I had found a lower cost solution/inverter, I would find SOMETHING that was a major con for either my current application, or a future needs/wants. I also waited months for new products to be released, or for them to be proven in the field. For...
  • Post in thread: Got Busted by Electrical Power Police..Now Need help with Permits

    I'd bet on generating more power than being used and the meter saw the current reverse. A smart meter almost instantly notifies the power company if power is being pushed out to the grid. If you're going to do something like this with a smart meter in place, you better be damn sure you're...
  • Post in thread: What is the easiest way to compress prismatic Cells?

    The data from Eve seems to suggest under compression the Ah drop off quicker at the early part of the cell's life, but significantly extends useable Ah for the remainder. I don't have the graph handy, but it was enough to make me realize it's wise to use compression if you're looking to get...
  • Post in thread: Deye Hybrid Split-Phase Inverters - Discontinued in favor of SOL-ARK

    Well this thread has gone down the toilet! Can we go back to discussing anything other than who banged Lisa-Ann first back in high school??? Does it really matter that much, as long as you got a piece of Lisa-Ann (and didn't get a VD)???
  • Post in thread: Sol-Ark 15K All in One Inverter Released.

    I have a 40 or 50 (?) gallon Rheem HPWH which I purchased 2 years ago. I kick myself for not buying it years earlier! Not only has it drastically reduced electricity consumption, but the dehumidification and AC byproduct from it has made a noticable difference in air quality as well. We've...
  • Post in thread: Are micro invertors the future of residential installations?

    Almost the same exact deal where I live on rate and capacity, except it's a variable rate, roughly $0.02-$0.05. Oh, we now also have the opportunity to sign an agreement that says you agree to sell ALL your solar output to them for a little higher locked in rate for 20 years, but you also must...
  • Post in thread: Rock solid, no bells, 48 volt inverter

    88% isn't too bad for a LF inverter.
  • Post in thread: Sol-Ark 15K All in One Inverter Released.

    This inverter is one serious mule! I could never come close to using even a reasonable fraction of its potential, but I want one... just because!
  • Post in thread: Where to begin! For my Epic Adventure!

    A solar system is typically rated per hour. At your location, a 2.5 kW system would generate on average about 4000 kWh per year, or close to 11 kWh per day (more in the spring-fall, less in the winter). A 3 kW system would generate about 4800 kWh per year, or on average about 13 kWh/day. A...
  • Post in thread: What Happens to Battery Packs that Sit Unused?

    If you look at the chart below for a LiFePO4 battery cell, you'll notice the shape of the curve is not liner from 2.5V to 3.65V. In fact, it's almost flat for the majority of the "curve". Basically for most of the usable port of the curve, the voltage is 3.2V to 3.35V, and from 20% to 95%(+)...
  • Post in thread: Sol-Ark 15K All in One Inverter Released.

    My $25K number assumed sourcing domestically (in the US). I'm not sure I would agree that a well built DIY pack with good components would be all that much less reliable than most commercial packs. I also don't know that the quality of the internal cells would be any lesser either. The EVE...
  • Post in thread: Coming Energy Prices …..

    I use a EPA rated wood stove which has a built in catalyst (Blaze King "King"), it burns very clean. The wood I burn has already been cut down as well, so at least I don't feel I'm cutting down perfectly good trees to heat the house. Now the trees growing over my house and garage OTOH, are...
  • Post in thread: Mini Split A/C Power Consumption?

    I fully agree this IS a fairly open ended question. So many factors come into play... Equipment efficiency, insulation, room size, sun exposure, number size and quality of windows, air tightness, climate, thermostat set point, sizing of the units for the area, etc. Also, AC verses heating is a...
  • Post in thread: Compress or not, flexible busbar or not

    My take on the compression issue is, EVE recommends it and it's cheap and easy to do with a couple of scrap pieces of wood, four valve springs/pieces of threaded rod. So why not do it if the mfg recommends it for longevity? Given the investment, it seems like cheap insurance. With that said...
  • Post in thread: For a home that might be sold in a year’s time

    It's pretty easy to make a ground mount out of PT wood and then anchor it with something like this: https://americanearthanchors.com/pe26-26-inch-penetrator-with-1-inch-hex-head/ Such a setup should be fine for most areas/weather for quite a while.
  • Post in thread: I'm DONE with MPP Solar

    That had my attention as well, but I think we're going to be waiting a while for the answer.
  • Post in thread: Who sells Huayu HYH-10K-NA inverter in the USA? Got this quote from Manufacturer....

    BTW, I have contacted Luxpower directly probably 5 times, never once have I received a response!
  • Post in thread: My 1 ton Minisplit A/C will not start on a 12volt 5000 watt inverter

    That MS does not appear to be an inverter model, so no surprise your setup wont start a 1 ton psc compressor. A soft start will likely get it running, but a 48V system with a better inverter would be my recommendation so you're not maxed out with anything more.
  • Post in thread: Sunny Islands vs Sol-Ark 15K for existing SMA-based Grid-Tied System

    The versatility, zero export, and simplistic AIO package with the 200A passthrough eliminating the need for wiring a backup panel is what has pretty much sold me on the SA 15K. Not to mention their CS and TS is second to none. Yes, it is a new system, but I suspect any bugs that might be found...
  • Post in thread: Steve_S update.

    Glad to hear things are improving a little, get well soon! And the bottom of humanity's barrel never ceases to amaze me! I'm not a firm believer in karma, but I sure hope those POS get it back x2! :mad:
  • Post in thread: How many amps for busbars?

    I'd be inclined to do traditional16S 48 volt packs, each with it's own BMS feeding into a large common busbar. This way you not only have better pack control, redundancy, but also much lower current through each pack. Then again, going high voltage makes sense, but finding the equipment to...
  • Post in thread: What Happens to Battery Packs that Sit Unused?

    If it were me, I don't think I'd leave the battery stored long-term at full capacity as I don't think it's healthy for the battery. I'd also consider using an active balancing BMS (like the JK) so the cells are auto-balanced when it is brought up to full charge. Either way, I'd probably...
  • Post in thread: My Megarevo 8K went boom.

    It's starting to look like that's what I'll be doing, sadly.
  • Post in thread: Sol-Ark 15k Operational Impressions?

    I'm sure this is not what you want to hear, but your 120V will continue to be a thorn in your side until it's replaced. I'm guessing it's getting up there in age anyway (since I can't image someone spec'ing or using that today). Converting that well pump to 240V might be a PITA, but it might...
  • Post in thread: Megarevo RxLNA Discussion

    So in in SolArk rating terms, they would name this a 17.5k? :oops: :ROFLMAO:
  • Post in thread: Are micro invertors the future of residential installations?

    It might be best to take all the "under the radar" legality discussion to its own separate thread and try to keep this more on topic to pros/cons of microinverters. Just a suggestion anyway for readers that are potentially interested in either.
  • Post in thread: BATTERY SELLERS - THE GOOD, BAD, UGLY -- or Jenny (DOCAN) so far so good ...

    C and P are interchangeable. Lower resistance is better. Less resistance means higher flow and less heat.
  • Post in thread: My Megarevo 8K went boom.

    We at least LS is stepping up, I'm glad to hear it! It makes me wonder if Megarevo is agreeing to replace it for them on the backside, or if they are taking the hit??? I've found the reported total lack of CS & TS support from Megarevo very troubling, even before your issue took place. Now...
  • Post in thread: growatt and Tesla?

    Sure you can, at a lower L2 output with only a 5kW system. By far the best way to do it would be to charge it while PV is active. If you wanted to charge at night, it would take a lot of $1800 EG4 5kWh batteries to store all the energy needed to fully recharge what your Tesla can store...
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