When your miner starts, you will pay for the electricity it consumes.
Electricity prices are 0.059 €/kWh
The hosting costs for your miner cover the daily electricity usage
Cyberian Mine calculates your hosting costs daily, so you only pay for the exact percentage of the hash rate you receive. These costs are deducted from your balance in Euros, so it's important to keep your balance topped up (the hosting costs are not deducted from your BTC income, so you have to cover the hosting with Euros on your balance, in your Cyberian Mine dashboard, on the platform).