Výběr zpráv ze sítě NucNet - 43. týden 2007

Renewables ‘More Sensitive To Climate Variability’ Than Nuclear, Says Report

The possible impact of climate change on electricity
production in the US is likely to influence future technology choices and
investments, according to a new report by the country's Climate Change
Science Program (CCSP).

The report*, 'Effects of Climate Change on Energy Production and Use in the
United States', was published on 18 October 2007 and is the third in a
series. It evaluates emissions, energy and the economic implications of
stabilising greenhouse gas concentrations.

According to the report, most of the impact on fossil and nuclear
electricity components is likely to come from “modest changes” in water
availability and/or cycle efficiency.

“Because renewable energy depends directly on ambient natural resources such
as hydrological resources, wind patterns and intensity, and solar radiation,
it is likely to be more sensitive to climate variability than fossil or
nuclear energy systems that rely on geological stores,” says the report.

It says renewable energy sources are connected with climate change in “very
complex ways”, adding: “Their use can affect the magnitude of climate change,
while the magnitude of climate change can affect their prospects for use.”

“Of the two largest US renewable energy sources, hydroelectric power
generation can be expected to be directly and significantly affected by
climate change, while biomass power and fuel production impacts are less
certain in the short term,” says the report.

The report says wind power is the fastest growing renewable energy
technology in the US with total generation increasing to 14 billion kilowatt
hours in 2005.

The coordinating lead author of the report, Thomas Wilbanks of the
Department of Energy’s Oak Ridge National Laboratory, said: “This report
represents the first overview of impact vulnerabilities, opportunities, and
adaptive response issues for the energy sector in the United States.”

He said the report is notable because unlike some other sectors of interest
regarding climate change – such as water, agriculture, and human health – the
energy sector has not been the focus of climate impact discussions over the
past decade.

The first report in the series was published in May 2007 by the US National
Oceanic and Atmospheric Administration. US federal agencies plan to deliver
the remaining 19 reports during the next year to increase scientific
understanding related to climate change.

* The third report is available in full on the CCSP web site
(
www.climatescience.gov)

Zdroj: NucNet

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