Topic: [11.2kW SOLAR/WIND/MAN] NastyMining Green Energy Project ☀️💨💪🔋 - page 3. (Read 73116 times)

Ahh, gotcha.

So if you wanted to, you could sell excess power at off-peak prices, but you are storing excess electricity in the battery, and using it during times at which peak prices are charged in order to avoid paying peak prices.

I’m allowed to sell excess solar energy back to the grid, but I am not allowed to sell grid energy back to the grid at higher prices that I’ve stored in the battery. What is happening now is that instead of selling excess energy back to the grid at off-peak prices, it stores it and then uses it on-peak.

Does this mean you are not being allowed to sell excess electricity back to the electric company?

It was my impression (based on newspaper reports) that power companies were required to buy back excess electric production via solar (and other "green" methods) in your part of the country.

It seems to be reducing the on-peak usage and leveling out power usage spikes, but it appears to only arbitrage energy generated with solar power. I don’t think they’re yet allowing the discharge of energy to the grid that was charged using off-peak grid energy.

How's the PowerWall Doing?

There is a timeline and the hardware is listed in the beginning of this thread.

NastyFans has been around and open to anyone since 2012. There’s a link in the OP to read more about it. No, it isn’t cloud mining.

So far there are only 2 settings, and neither seems to be performing exactly as expected.  I think it's "learning" how best to utilize itself, or they've got some more work to do on the new firmware.  It seems to be not providing arbitrage as much as it is trying to smooth out the energy usage and reduce peaks while extending the solar power to be used after sunset.

I'm really interested in the Tesla Powerwall,
it is great to see some actual results through your update posts. 

That is good news

With the most recent Tesla firmware update I can now use the Powerwall for energy arbitrage!  Today is the first day of experimenting with this feature, but I do hope to have some interesting statistics to share soon.

First you need a good project. Then the sponsors find you.

Due to regulations, at this point in time the Powerwall charges with solar generated power. I am hoping that changes soon. The wind turbine uses it’s own stand-alone inverter, while the solar panels each have their own built in inverters.

Are you able to charge the Powerwalls with grid power, or only with Solar generated power?  Also, does the Wind turbine plug into the same Inverter as the solar panels?

Not yet.  So far everything has gone smoothly.

Captain Kirk seems to think so.

https://www.forbes.com/sites/billybambrough/2018/06/14/william-shatners-betting-on-the-bitcoin-price-with-solar-powered-mining/

Your estimations are overly negative.



When I was doing my research, I found that SunPower seemed to have better efficiency and warranty support than their competition.

Your calculations seem to be correct.
I am running about 200kW DC Solar and we are mining with about 20kW Hardware, growing to about 50kW until 12-2018.

So far i cant tell you the solar coverage ... maybe in september all counters are installed and when the logging works for some month i will make a prognosis.

At the moment i try to calculate the costs of investing in Batteries to use as much solar energy as possible.
We are somewhere between 200 and 300$/kWh storage costs i think...

But on the long go its very interesting and the ROI should be <5 years, if solar is available and "for free"...

I learned you can find them at motorcycle shops, most performance bikes have switched to them.
$200 will get you 12V 30AH 480CCA 80% or more Depth of discharge, 80% round trip efficiency, under 12 pounds.
Not sure what to use for a controller for LiFePO4 though, seems they have not caught up too well.

Any current recommendations on the most efficient solar panels, or is it such a slim difference it doesn't really matter as long as the price is good and it doesn't break ?
So far got lucky with $190 grabbing a 100watt panel which puts out exactly that in perfect sun.

First off I would like to say nice work and that I'm also into mining big time. I also design and laminate my own solar panels from scratch. I use the Sunpower Maxeon c60 cells you're using in your panels. I'm also an ex Nuclear safety inspector, SCE at the San Onofre Nuclear plant.

My concern is that you're claiming all this green savings and how your Solar Panels are powering your Mining Rigs and you make it sound like you have an energy surplus. Yet that 11.2kW array on your roof is the proper size for your house and no more. It's probably allowing you to "almost" break even for you homes electrical needs when you add in summer air conditioning needs. 17,976 kWh / 1,498 kWh per month or <50kWh a day. Those are your stats broken down.

As for powering your mining rigs? Let's be honest. Your home alone without the miners is probably averaging 50kWh's a day. I average 60-80kWh's a day without mining at my house is 100% LED's.

Your rigs alone are taking at least 133 kwh's per day + about 50kWh's per day for the rest of your home = 183kWh's a day on average for the year. I'm sure I'm off some.

You're  MINING HARDWARE:
1x Bitmain Antminer S9 (link)     1,340 Watts
1x Bitmain Antminer R4 (link)       845 Watts
2x Bitmain Antminer L3+ (link)      800W x 2 = 1600 Watts
1x Bitmain Antminer A3 (link)     1,275 watts
2x Radeon RX Vega 56 (link)         210 x 2 = 420 Watts (500W counting the System they're running off on.

Just the Mining hardware =  5,560 Watts x 24 hours a day = 133,440 KWh's Per day and I'm sure I left out many things like the power draw from the power supplies needed to power the Antminers or any additional fans and cooling.

My estimate is that your solar panels are supplying only 27.32% of your homes total energy usage.

Also, you mentioned you're already at $40K in cost and saving $1,995.34 a year (btw: 11.1cents per kWh) That's over a 20 year break not counting tying your money up with no interest and inflation eating the value. Those 2 power walls are going to need $7K worth of new batteries every 10-12 years. Your solar cells will likely hold over 90% power after 30 years.

Sorry to sound negative.

It would be awesome if you would post your actual electric bills.