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 blog:2017:0908_crypto_mining_on_solar_panels [2017/09/08 19:18]manu blog:2017:0908_crypto_mining_on_solar_panels [2017/09/11 06:30] (current) 2017/09/08 19:18 manu 2017/09/08 19:18 manu Line 1: Line 1: ====== Crypto mining on solar panels ====== ====== Crypto mining on solar panels ====== + {{tag>​mining energy}} + As part of my little project to start mining cryptocurrencies "​appropriately"​ I decided I should have a look at how one could possibly use solar panels to produce electricity in a mining setup. - {{tag>}} + ====== ====== + First I had a look at a few youtube videos: + * [[https://​www.youtube.com/​watch?​v=8f10hVL-y0o&​list=PL9ghTEFW_JzuA7VkmsqQQEB6cIYgi4Pdj&​index=1|How to create a solar panel from scratches]] ([[https://​www.youtube.com/​watch?​v=YckHQS3TV84&​list=PL9ghTEFW_JzuA7VkmsqQQEB6cIYgi4Pdj&​index=2|And part 2 here]]): This looked interesting because it means we could really build a solar panel from simple solar cells (yet, it's not really worth it: it's less expensive to just buy a panel nowadays). + * [[https://​www.youtube.com/​watch?​v=hNH2YGzwznI&​list=PL9ghTEFW_JzuA7VkmsqQQEB6cIYgi4Pdj&​index=3|A fast way to solder the solar cells]]: this guy present a fast method to solder a complete row of solar cells (but he also mention that it's a better idea to just buy a pre-made solar panel nowadays as already noted above). + * [[https://​www.youtube.com/​watch?​time_continue=14&​v=hANi5NbcY5g|Grid Tie Inverter]]: this would be the easiest option to get the current on the grid + * [[https://​www.youtube.com/​watch?​v=w4qcoEXYqK0|The Ultimate Guide To DIY Off Grid Solar Power]] + * We should use **golf car batteries** in a solar setup instead of regular car batteries. + * Connecting 2 batteries of 6V in series to get a 12V system (of 235Ah in the video) + * Batteries should not be discharged more than 50% (or their lifetime will be severely reduced :-S) + * Battery model used in this video: Duracell SLIGC125 + * Should place the solar panels as close as possible to the batteries: due to the resistance in the cable (to reduce the resistance we need to use thicker cables) + * When placing the panels, should take into account that the sun elevation is not the same during all the year + * => Consider not placing the solar panels fixed on the roof (can tilt, clean, maintain them easily in that case) + * Solar panels can be wired in series and/or parallel: to consider to get an appropriate voltage / amp value. + * Select the appropriate wire gage to support transporting the amp value + * Use a **voltage drop Calculator** to figure out how much voltage is lost in the the wires. + * Consider MPPT charge controller: accepts large input voltage. + + ===== Electricity cost ===== + + Now let's start a simple mind experiment: let's say we want to run a mining rig of about **1000W**. If we do so, that means we use $1000W \times 24h = 24kWh$ of energy per day. + + The [[https://​www.kelwatt.fr/​prix/​edf|current price of the kWh]] in France is: 0.14660 € TTC (we have a 6 kVA power subscription). So technically we would have to pay each month for electricity:​ $24 \times 0.14660 \times 30.5 = 107.31€$ + + [[https://​www.fournisseurs-electricite.com/​comparatif-electricite/​actu-electricite/​1082-prix-dun-kwh-delectricite-en-france|This diagram]] explains the various taxes payed to get from 0.0887€/​kWh HT to 0.1466€/​kWh TTC: + + ;#; +