Correct which somewhat defeats the purpose of Maximum Power Point Tracking.  The battery will store the energy that otherwise just turns into heat.  If you're not utilizing the potential of the panel at all times, you're wrecking your ROI versus what you get off the grid.

Also if you're doing this off a 12 volt panel and using it at a 12v power supply, you're artificially dragging the voltage down using the MPPT (unless your input tolerance is way higher).  This makes cabling costs and voltage drop an even bigger factor and a full stop for anything larger than 1000W.

cost of build solar?

If you make sure the load is always at least what the solar panels are capable of producing, then the full power generated by the panels can be used. The remainder will be pulled from the mains. You can even have just some of the panels supplying the hacked PSUs with the remainder supplying an inverter as is usually done. In that configuration, the required inverter will be quite a bit smaller, since those aren't cheap. (The idea of hacking a hybrid car inverter into a solar inverter/rectifier is an interesting one since those are dirt cheap for their power capacity, but requires a very expert level of electronics knowledge.)

I have to admit that I'm jealous of my best friend Naomi Wu! Not only is she smart, she's very beautiful and artistic. I kind of wish I could be as good looking as her so that I could host a nice TV show of my own.

I also have to say that another one of my friends, Allie Moore, is really jealous of me now. For a bit of background info, she and I have been trying to "one up" each other in going green. That kind of slowed down once I got a Prius since she couldn't afford a new car, then she needed to replace the HVAC system in her house so I suggested one of the Gree smart systems. She didn't care very much about my cryptocurrency mining (not even how I largely focus on energy efficient coins), but add the solar and the fame and I managed to rise to a level that would be very difficult for her to one up.

To get back on topic, the best way we could promote solar power is to share information on how to build effective DIY solar setups. From beginners who need a bit of guidance to put together their first solar power system to experts who design open hardware for use in solar power. Solar power and cryptocurrency mining unfortunately don't tend to go together as a good investment. For those who have built large solar mining setups, what are they planning to do with the solar panels once mining is no longer profitable?

48 V DC power supplies
https://www.powerstream.com/DC-PC-48V.htm

Efficiency seems to be around 75%, which is less than impressive.


Supermicro also has some:
http://www.supermicro.com.tw/products/nfo/power_supply.cfm?pg=PWS&type=-48Vdc#type
Don't find any info on efficiency but likely much better.

Nissan Leaf modules are going for about $200/kWh, probably even less in quantity. There are also LiFePO4 cells which are even cheaper (like the ones I used in my setup) but building up a sizable pack out of those is a lot of work...

try use regulator direct to mobo&GPU rather than using inverter to psu, you are losing 30%-40% efficiency

I've added the second shelf and some cooling. I'm currently waiting on 4 * Vega64 and a few 1070ti's in post... more pics next week!

I paid $6200 for 5kW system (Perth WA), it is producing 10MW ($2500 worth) per year, and I sell absolutely nothing back to the grid, so the ROI on the solar is 2,5 years, which is bloody awesome.

were hoping to be solar by next summer and were not renting it because the GOV perks you should get even if you rent or part of it  you don't get but if you Buy it you get it all, to me the company's that rent out solar are F*** you over, all you get out of it is maybe cheap Electricity no increase in poverty value etc ... and they get 1000's in cash you should get even if you rent for going solar.. but that's how the GOV set it up ripe off the little guy and give it to the rich ... an that tax cut they want to do to us in the US is bad ..... which is not law yet.



Don't pay 40 k for any solar system on any house/home the Price is dropping that fast .. at most you should only pay 10k if that Ive seen some system were i live go for 7k for a 10kW system or less  ... i would shop around before buying a solar system for a house/home and don't rent.



I wonder to , don't worry that a-hole won't be around much longer and i hope the democrats learned from this once they get control back an they use it right ...after all every thing we have in the US was done for the people by the people or by the Democrats with the Republicans fighting it all the way an once the Republicans got control they can't get shit done  an what they want to do will hurt us an make things worse, i always thought it was the Democrats causing problem's like all most everyone was saying, was i wrong  ..I learned a lot with the want a be dictator we have for a President in the US. I'm 61 and never really read the  Constitution for the United States of America in detail with trump I had to.



Avg cost in the US around 5 to 10k or less for a full solar system you can use like you do normal Electricity .. but buy it don't rent it .

You can buy a Portable system but I'm not to sure how well they work and are they worth it ? ..just for mining if that's what you want .

i want full solar so i don't have to pay the Electric Company like i do now i know i may have to for night time use but selling to Electric Company is a nice feeling knowing they have to buy it back by law in my state ... an I'll max run it because i can ...

And i was told don't know how true it is, you can buy it over sea or out of the US even cheaper the reason the cost is so high in the US is greed and what GOV lets them do to us and there not held accountable for most of it, so they keep doing it .