A social tariff, as proposed by the SNP, would mean lower bills for low-income households as well as elderly and disabled people.
After taking the vast majority of seats in the last two elections, the SNP looks set for major losses.
Scotland voted for its own parliament in September 1997, but has yet to make its mind up about the biggest issue of all.
The Scots thought their education system was world-beating, until the OECD started publishing rankings.