> on the flipside when the price occasionally hits ~0 charging is basically free.
Not where I live - Sweden - since there is a fixed energy tax raised on electricity. We buy electricity on the artificial 'Nord Pool' market at market rates + 2.5 öre (1 öre is 1/100 Swedish krona, at current exchange rates 1 öre is about equal to $0.009) surcharge which means that the actual electricity costs are 0 when the market rate is at -0.025 SEK/kWh. Such a 'free' kWh costs us around 0.88 SEK due to:
- 0.4280 SEK energy tax
- + 25% 'value-added tax' on top of that tax (yes, tax on tax is a thing here) makes this 0.5350 SEK/kWh
- 0.34 SEK//kWh 'transport charge' (this includes 25% value-added tax)
All this means the market rate per kWh has to fall below 0.905 SEK/kWh for electricity to actually be 'free'. This has happened but fortunately this is a rarity. Fortunately? Yes, of course. This basically only happens when there is a large discrepancy between electricity production and electricity demand/transport capacity which in turn lead to excessive voltage and frequency in the distribution network which in turn can lead to the network going off-line.
Not where I live - Sweden - since there is a fixed energy tax raised on electricity. We buy electricity on the artificial 'Nord Pool' market at market rates + 2.5 öre (1 öre is 1/100 Swedish krona, at current exchange rates 1 öre is about equal to $0.009) surcharge which means that the actual electricity costs are 0 when the market rate is at -0.025 SEK/kWh. Such a 'free' kWh costs us around 0.88 SEK due to:
- 0.4280 SEK energy tax
- + 25% 'value-added tax' on top of that tax (yes, tax on tax is a thing here) makes this 0.5350 SEK/kWh
- 0.34 SEK//kWh 'transport charge' (this includes 25% value-added tax)
All this means the market rate per kWh has to fall below 0.905 SEK/kWh for electricity to actually be 'free'. This has happened but fortunately this is a rarity. Fortunately? Yes, of course. This basically only happens when there is a large discrepancy between electricity production and electricity demand/transport capacity which in turn lead to excessive voltage and frequency in the distribution network which in turn can lead to the network going off-line.