It's not about how much it generated, but about nudging people who are already looking at doing something, to chose the lower carbon option. If people are suffering, the rebate should be increased.

Now that the Liberals have done this once, our next conservative government will be able to butcher it with vanity exemptions all over the place, just like Harper loved the vanity tax credits to buy various voter segments. It will be useless before long, and just a bunch of unnecessary administrative baggage. They won't even need to cancel it, because handing out exemptions will be so politically profitable.