The tiered system I envisage for electricity is not one where the baseline tier is already set to recoup full cost, with a tax artificially imposed on excess consumption, as is the case for water.

• 她认为如果我们用计算水费的分层式计算法来收取电费，国人将必须承担更高的电费。这是因为第一层用水收费就已经定在收回全部供水成本的水平。