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Octopus Energy Saving Sessions

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Does anyone know how the Octopus ”Power Hour” energy saving sessions are actually calculated?

I’ve taken part in all of them, but the results just seem totally random.

I’ve had sessions where we’ve switched off as much as we can and gone out, only to be told that we didn’t manage to save anything.

Some sessions, we’ve made very small savings, Including one where virtually everything was switched off and the whole family was in another country.

One session I forgot it was happening despite signing up, only to be told I’d managed to save 93% of my normal usage and be credited with over £16 off!

I’ll continue to sign up for them and don’t really do it expecting to save much as we are already quite energy efficient. It all just seems so random.
 
Live view of the impact:
1701287055921.png

Yes, the peak has well and truly been shaved.
 
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What do we think the average home use is for 90 mins in the late afternoon/early evening? Maybe 1kwh? Perhaps less but if 1kwh then each person fully discharging an average 3kw battery could be helping remove 4-5 other homes from grid demand?

But how can it be fully automated for everyone with batteries of all makes?

Do we need an automatic additional export payment for responding to frequency drops? Or a single government run service that converts a meter ID into details of the person's dramatic inport/export rates so a battery can respond without needing to integrate with every energy vendor?
 
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