The cost per therm of industrial fuels is slightly over three times as much. The real danger to the consumer will not be the price per therm that will be relatively easily looked after but the extras.
to (cause someone to) be in a position in which the lower part of the body is resting on a seat or other type of support, with the upper part of the body vertical: to sit at a table/desk. to sit in an armchair. to sit on a chair/a horse/the ground. He came and sat (down) next to me.
verb (used without object),sat or (Archaic) sate [sat, seyt]; sat or (Archaic) sitten [sit-n]; sitting. to rest with the body supported by the buttocks or thighs; be seated.