One ton of sand can make silicon solar cells that produce as much electricity as burning 500,000 tons of coal.
(One ton of sand; can make; silicon solar cells that produce as much electricity as burning 500,000 tons of coal) (silicon solar cells; produce; as much electricity)
One ton of sand silicon solar cells
can make produce
silicon solar cells that produce as much electricity as burning 500,000 tons of coal
as much electricity