I think almost none of the farmers don't understand what is green farming.
Not green:
buying ssd and killing it with plotting - that is waste
buying all the big hdd to farm - that is not good for the hdd prices - look at the video card prices now! i dont want that with the hdd prices
buying new rig - why do we need a new ryzen on i7 for plotting if we can use older hardware cheaper (haswell xeon for the win)
Green:
solar or other green power source
used or trash parts
cheapest as possible
So i started farming chia that i think green!
Electricity is from industrial solar power.
Most ot the rig parts is from trash, or used.
First complete Rig:
Chinese x99 matx (85 usd aliexpress)
2x32gb ecc reg ddr4 (110 usd local seller)
Xeon 4655v3 (60 usd aliexpress)
cheap new cooler modded to the socket (8 usd)
Dell H310 raid card modded to IT/HBA mode and hacked queue depth fw (35 USD) 6+8 ports but i use all usb ports to racked hdd-s
Mixed 2,5"-3,5" sizes 500gb-1tb-1,5tb-2tb-3tb-4tb HDD-s (over 14Tb to farm, few tb to plot, cost was ~150 usd, few have bad sectors but works fine)
Thermaltake 450w (10 usd)
no video card, because i use RDP only
Case is chieftek old but heavy from trash (i have 3 of these cases)
With the 500gb-s hdd in raid0 makes 6-8 plot per day, that is not much i know. I still have ~4tb space to plot
Second is not ready yet
Chinese x99 ATX (125 usd)
Xeon 2643v3 (110 usd)
4x8gb ecc REG (105 usd)
Akasa A20 (trash, repaired)
10x500gb Toshiba used hdd-s (10 pcs was 75 usd)
A lot of other hdds, mixed 320-500gb size
3ware raid and dell h310 modded raid cards (8+8+8 ports) (30 and 35 usd)
Cooler master case and 500w cooler master power supply from trash (repaired capacitor)
Another noname case near the main case for the other hdd-s that not fit in the main case. (i have long 8087-4 sata cables, and custom power cables)
I made custom sata cables from not working psu-s.
For plotting i use the 320-500 raid0 arrays, that makes 1 plot/12-16 hours per array
i have started working solo, but i got nothing so i joined a pool (chia-core.com) yesterday. I got 0.008 XCH in the first day.
Yes it is need more work than putting new hardware in the rig but is is much more fun to build.
So there is a reason to not mine chia?
Greedy people makes this coin bad, not the coin itself