Strange, I've had a very different experience to the author of this, I've actually got a similar spreadsheet I may clean-up and post to show another view point, however in summary.
A couple of months ago I went on a little mission around the house testing the power consumption of devices on standby, as I noticed through my energy monitor that idle power consumption was about 0.4-0.5kW while everyone was sleeping at night, which seemed high to my research of national averages.
To my surprise a number of fairly modern devices I found to have utterly terrible standby power consumption, the new buttonless electric hob in my kitchen, the two monitors for my PC on standby, the TV & Blu-ray player and an Aircon unit just to name a few.
Since then I used a few Sonoff relays around the house to add these to Alexa, the results were actually quite amazing really, about £10 per week of electricity saved, so £30-£40 per month...
So in short, if your similar to me you can actually save £300 a year, I think the key take away here is clamp/monitor your own devices and take a judgement from there, no one house/setup is the same.
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Edit, here's a very quick screenshot of the spreadsheet and data I've got to hand at the moment, in time I'll get something better cleaned up and together.
https://imgur.com/a/l4xMwbo
A couple of months ago I went on a little mission around the house testing the power consumption of devices on standby, as I noticed through my energy monitor that idle power consumption was about 0.4-0.5kW while everyone was sleeping at night, which seemed high to my research of national averages.
To my surprise a number of fairly modern devices I found to have utterly terrible standby power consumption, the new buttonless electric hob in my kitchen, the two monitors for my PC on standby, the TV & Blu-ray player and an Aircon unit just to name a few.
Since then I used a few Sonoff relays around the house to add these to Alexa, the results were actually quite amazing really, about £10 per week of electricity saved, so £30-£40 per month...
So in short, if your similar to me you can actually save £300 a year, I think the key take away here is clamp/monitor your own devices and take a judgement from there, no one house/setup is the same.
---
Edit, here's a very quick screenshot of the spreadsheet and data I've got to hand at the moment, in time I'll get something better cleaned up and together.
https://imgur.com/a/l4xMwbo