SORU: aşağıdaki parçaya göre cevaplayınız
The writer of the passage points out that the cost of installing solar cells for the home ----.
If the solar company's claims are borne out, its highefficiency
cells will bring solar power closer to
becoming a practical option for home owners. The
average power demand of a household is 2,000 to
3,000 watts. With solar cells around 20 per cent
efficient, this demand can be met with about 15
square meters of solar panels, which is compact
enough to fit on a rooftop. It has been estimated that
ready-to-install arrays will sell for around $10 per
watt. That cost may eventually fall further. For, as
one spokesman for the company said: “The trend is
towards higher efficiency". Others agree, but say
silicon may not be the material that ultimately
delivers it. Thin films of cadmium telluride, for
instance, are showing promise in the lab. One
London-based solar energy systems supplier is very
impressed with some new solar cells that have just
come on the market, both on account of their
efficiency and also because they are practical. They
are very easy to connect together," he points out,
you can just put tabs on the sides of the back
contacts and connect one cell to another without
wires."