More construction projects in the southern city will use solar
power to supply hot water and generate electricity by 2010,
according to the local construction authority.
A new law on energy-efficient construction issued on Wednesday,
the first of its kind in China, will go into effect on November 1.
The law sets out that all new residential buildings under 12
storeys must install solar water heating for residents.
Current technological limitations mean that only 12 storeys can
be guaranteed 24-hour hot water, according to an expert with
Shenzhen Construction Bureau (SCB).
Projects that are unable to collect solar power will require
special permission from the government, otherwise they cannot be
put on the market. Offenders will be fined 50,000 yuan (US$6,250)
to 500,000 yuan (US$62,500).
"It's an important law that will ensure the wider application of
solar power in the city, a sign the municipal government is putting
more emphasis on renewable resources," said Gao Erjian, an official
with SCB, in an interview with China Daily yesterday.
The city has submitted to the Ministry of Construction 19
construction and reconstruction projects that will make full use of
"They will pave the way for the city to become the national
leader in the utilization of solar power in construction," Gao
One of the projects is a government-funded software building,
which will provide nearly 59,000 square metres of floor space to
small and medium-sized software companies.
Builders will place 900 single silicon solar cells on the roof
and another 3,654 non-silicon solar cells on the southern and
western walls of the building.
The solar cells will increase costs by about 13 million yuan
(US$1.6 million), but they will generate roughly 320,000
kilowatt-hours (kWh) each year, meaning annual savings of 285,000
yuan (US$35,625) at the current rate, according to a feasibility
study by SCB.
"The government should subsidize developers who use solar power
to generate electricity since the cost is two or three times that
of regular generation," said an SCB official surnamed Xu.
In Germany, the government encourages people to use solar power
by purchasing unused solar electricity at three times the normal
price, Xu said.
The central government is considering a similar subsidy method
but no details have been released yet, said Gao.
With nearly 2,000 hours of sunshine each year, solar power has
significant potential in the city, but by 2004 only 110,000 square
meters of buildings used solar power, according to official
The city consumed about 44 kWh of electricity last year,
compared with 19 billion kWh in 2000. It still needs a further
800,000 to 1 million kWh each year to meet demand.
SCB in July worked out a blueprint for the city's
energy-efficient construction between 2010 and 2020 in July.
By 2010 half of the new buildings in the city will install solar
water heating systems, and 20 per cent of the new buildings will
use solar power to generate electricity.
(China Daily August 11, 2006)