A kilowatt hour of electricity saved, a therm of natural gas saved, a ton of coal saved, a cord of wood saved, a barrel of oil saved - is always less expensive than producing a new unit of any of these energy sources.
(A kilowatt hour of electricity; saved; ) (a therm of natural gas saved, a ton of coal saved, a cord of wood saved, a barrel of oil saved; is; T:always; less expensive than producing a new unit of any of these energy sources) (natural gas; saved; ) (a ton of coal; saved; ) (a cord of wood; saved; ) (a barrel of oil; saved; )
A kilowatt hour of electricity a therm of natural gas saved, a ton of coal saved, a cord of wood saved, a barrel of oil saved natural gas a ton of coal a cord of wood a barrel of oil
saved is saved saved saved saved
T:always less expensive than producing a new unit of any of these energy sources