Is there a chart which shows estimated transaction cost in kWh?
I haven't seen one but this is a great way to think about total processing costs. Although, this doesn't account for any CAPEX or any other OPEX but it is still interesting.
How much bitcoin network at all (miners, nodes, lite clients) takes energy for transaction proceeding?
I'd assume 1kW per 1Th/s as some miners are above this and some are below.
Are there more correct estimations and time-graph?
So we'd have 250,000 kWh at 3k txns which == 83.33kW
Hosting arrangement range from $30kWm to $150kWm.
So the cost range for 83.33kW is from $3.36 to $16.8.
We are probably over secure at this point in time but the infrastructure is in place for the network to grow 10x in transaction size which existing mining infrastructure.