For the sake of comparison, per capita energy consumption in the US (for 2003, from http://en.wikipedia.org/wiki/List_of_countries_by_energy_consumption_per_cap

For the sake of comparison, per capita energy consumption in the US (for 2003, from http://en.wikipedia.org/wiki/List_of_countries_by_energy_consumption_per_capita http://en.wikipedia.org/wiki/List_of_countries_by_energy_con...) is 10,381.2W, or around 91,000kWh/yr, so the example of 446kWh/yr in the article corresponds to about 0.5% of average energy consumption. Maryland has a population of 5,773,552, c.f. 308,745,538 for the whole US, i.e. about 1.9% - my guess is they're actually talking about electricity consumption here, not overall energy consumption.