Growing weed requires a ton of electricity, mainly for all the heat lamps you need to grow it indoors. That just backfired big time for a grow house.

Police in the Netherlands noticed a house last week that was different than all the other houses on the block.

It was in a town called Haarlem, and every other house had snow on the roof, but this one had a totally clear roof. It wasn't like someone had gone on to the roof to clear the snow, clearly something inside was keeping the snow off.

So they investigated and figured it out. That house was running a marijuana growing operation and the heat lamps were so strong they were melting the snow.

The police raided the house and found it was an, "industrial-scale cultivation of cannabis." Even though the Netherlands is obviously pretty lax about marijuana, it's illegal to grow more than five plants so the people in the house were arrested.