On Wed, Dec 9, 2009 at 2:58 AM, M.L. <m@lkeng.net> wrote:
> Or we will have to harness the solar power that lands on our roofs for
> free! When you consider the amount of insolation available on the
> average roof, it seems quite ridiculous to ship gas (sometimes
> literally) across the world to heat water for a shower.
>

Unfortunately we do not have big roofs here. In bigger cities like
Singapore (or Shanghai, Beijing, Hong Kong, etc), majority of
the people live in high-rise buildings. So even if you put Solar
panels all over the roofs, it probably is not good enough. ;-)

Many people here us electricity powered heater. I used
to have a gas powered heater but it was broken. Anyway,
the electricity here comes from nature gas, not coal or
oil or nuclear or hydro.


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Xiaofan http://mcuee.blogspot.com
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