Washington Post: In this nation that embraced one of the world’s most aggressive campaigns against global warming, the Pokropp family can almost hear the cha-ching when switching off their lights. A kilowatt of electricity costs three times as much here as it does in the United States, supercharged with high taxes to discourage use and to help fund renewable energy development. Meanwhile, a 50 percent “eco-tax” has sent the price of gasoline soaring to $8 a gallon. To manage costs, the family of three …