SEATTLE POST-INTELLIGENCER
http://seattlepi.nwsource.com/opinion/280625_solarcell10.html
Solar cells change electricity distribution
Thursday, August 10, 2006
By DAVE FREEMAN AND JIM HARDING
GUEST COLUMNISTS
In separate announcements over the past few months, researchers at
the University of Johannesburg and at Nanosolar, a private company in
Palo Alto, have announced major breakthroughs in reducing the cost of
solar electric cells. While trade journals are abuzz with the news,
analysis of the potential implications has been sparse.
We approach this news as current and former public electric utility
executives, sympathetic with consumer and environmental concerns.
South Africa and California technologies rely on the same alloy --
called CIGS (for copper-indium-gallium-selenide) -- deposited in an
extremely thin layer on a flexible surface. Both companies claim that
the technology reduces solar cell production costs by a factor of
4-5. That would bring the cost to or below that of delivered
electricity in a large fraction of the world.
The California team is backed by a powerful team of private
investors, including Google's two founders and the insurance giant
Swiss Re, among others. It has announced plans to build a $100
million production facility in the San Francisco Bay area that is
slated to be operational at 215 megawatts next year, and soon
thereafter capable of producing 430 megawatts of cells annually.
What makes this particular news stand out? Cost, scale and financial
strength. The cost of the facility is about one-tenth that of
recently completed silicon cell facilities.
Second, Nanosolar is scaling up rapidly from pilot production to 430 megawatts, using a technology it equates to printing newspapers. That implies both technical success and development of a highly automated
production process that captures important economies of scale. No one
builds that sort of industrial production facility in the Bay Area --
with expensive labor, real estate and electricity costs -- without
confidence.
Similar facilities can be built elsewhere. Half a dozen competitors
also are working along the same lines, led by private firms Miasole
and Daystar, in Sunnyvale, Calif., and New York.
But this is really not about who wins in the end. We all do. Thin
solar films can be used in building materials, including roofing
materials and glass, and built into mortgages, reducing their cost
even further. Inexpensive solar electric cells are, fundamentally, a
"disruptive technology," even in Seattle, with below-average electric
rates and many cloudy days. Much like cellular phones have changed the way people
communicate, cheap solar cells change the way we produce and
distribute electric energy. The race is on.
The announcements are good news for consumers worried about high
energy prices and dependence on the Middle East, utility executives
worried about the long-term viability of their next investment in
central station power plants, transmission, or distribution, and for
all of us who worry about climate change. It is also good news for
the developing world, where electricity generally is more expensive,
mostly because electrification requires long-distance transmission
and serves small or irregular loads. Inexpensive solar cells are an
ideal solution.
Meanwhile, the prospect of this technology creates a conundrum for
the electric utility industry and Wall Street. Can -- or should --
any utility, or investor, count on the long-term viability of a coal,
nuclear or gas investment? The answer is no. In about a year, we'll
see how well those technologies work. The question is whether federal
energy policy can change fast enough to join what appears to be a
revolution.
Dave Freeman has been general manager of multiple utilities,
including the Tennessee Valley Authority, Los Angeles Department of
Water and Power and New York Power Authority. Jim Harding is an
energy and environment consultant in Olympia and formerly director of
power planning and forecasting at Seattle City Light. Also
contributing was Roger Duncan, assistant general manager of Austin
Energy in Austin, Texas.
© 1998-2006 Seattle Post-Intelligencer
Comments (0)
You don't have permission to comment on this page.