Thats friggin bananas. Do you live somewhere with lots of hydro power? Your cost is less than 1/3 mine…

My SSDs use negligible power at idle, I only noticed a 1w increase when I installed two. Almost ‘free’. Also your 0.14kwh is almost certainly just the cost to generate the power minus the delivery fees. Where I live the delivery fees double my true per kWh cost. Double check your bill and divide your monthly consumption by your monthly payment to find the real cost.

Any quality brand SSD (Samsung, Kingston, WD, etc) is going to be more reliable in every way compared to mechanical disks, they just cost a lot more right now. Do NOT buy off brand, random Chinese SSD, you will regret it.

When I bought them 2 years ago power in MA was $0.46 per kWh, this included transmission costs and all the other fees. 15W cost me $4.80 a month, so $57.6 a year and $230 over 4 years. At the time 14TB mechanical disks were about $300 so it was about a $270 ‘premium’ for solid state over mechanical so I exaggerated the ROI, but to me the 2x price premium was worth it for silence and no latency on retrieving my data. So in summary the ROI for me was more like 8 years, ignoring the many advantages of SSD.

Does no one care about power consumption? Mechanical disks use, in my experience, 7-15w all day all the time just idling. If you live in a high energy cost area the ROI on going SSD can be as low as 3-4 years. If you can afford it, splurge for SSD. I spent ~$800 on two 8tb SSDs and I’m very happy with the choice.