I will confirm this further:
1 – Fixed prices do not encourage efficient use of our production and transportation capacity. Everyone goes home and does what he deems necessary (turn on the washing machine, turn on the electric vehicle, etc.). The dynamic price forces you to think a little better about this and adapt your trading in such a way as to shift the high consumption towards the quiet hours. This benefits efficient use of production and transport.
2 – Fixed price providers do not benefit from the cut, because it costs them money immediately. Spot price providers do not earn much from the converted kWh (they earn from the monthly fee) and therefore have no interest in higher consumption and will therefore have more incentives to stimulate their product (thinking about your moments of use).
3 – It is untenable to think that two prices are enough to differentiate. The morning and evening rush hours may not be as expensive from a price point of view as the quiet period in between. Fixed prices do not take this into account sufficiently, hourly prices do.
4 – Fixed prices do not make you sufficiently aware of the consumption of your home. Since I pay dynamic prices, I turn off the TV faster, for example, where I quietly left it in background mode. I let my tesla charge fully automatically in small steps instead of turning it on and possibly complaining all at once via delayed charging.
5 – Dynamic pricing can be a model of earning, charging a cheap battery at night and partially discharging it during the two peak hours. You can use the proceeds to reduce your investment in the battery, making it more profitable to buy such a thing and leverage your PV production and consume it yourself instead of reselling it to the grid for a little while.
And so I can go on. The old (sales) model of energy is obsolete. These energy crises make it painfully clear. If only because solar power is suddenly two to four times more expensive, just because oil and gas have become more expensive. It makes no sense…