In our data center, you're only billed for the electricity you actually use. We meter your usage and charge you at market rates, multiplied by a 1.5x coefficient. This additional charge covers various operational costs, such as climate control, uninterruptible power supply (UPS), and backup generators. We have little to none marginal there. To see approximate market price look at Nordpool homepage. (Note that electricity seller marginal and cost of transportation will be also added there as our cost).