For a quick calculation operation cost of a bucket with 20W consumption (One CFL lightbulb) consumes 14.6 kWh energy in a month with continous operation. This costs about 500 HUF (~1.8€) according to the electricity costs i could find quickly (32 HUF/kWh ~0.1€/kWh).
This price is comparable to the price of vegetables in the supermarket. This seems economic only for special crops with higher margins.
For a quick calculation operation cost of a bucket with 20W consumption (One CFL lightbulb) consumes 14.6 kWh energy in a month with continous operation. This costs about 500 HUF (~1.8€) according to the electricity costs i could find quickly (32 HUF/kWh ~0.1€/kWh).
This price is comparable to the price of vegetables in the supermarket. This seems economic only for special crops with higher margins.