07 March 2012 16:20 [Source: ICIS news]
HOUSTON (ICIS)--Methane emissions from the production of US shale gas have become a serious concern for the energy industry, Shell’s chief executive said on Wednesday.
Peter Voser, the chief executive of Royal Dutch Shell, said the issue was brought to light by some well-publicised studies.
“Some environmental groups that once supported switching from coal to gas for electricity generation are no longer doing so over concerns about methane leakage,” Voser said at the 31st Annual IHS CERAWeek Executive Conference in Houston.
However, Voser said those studies overstated the amount of emissions from shale gas production.
According to the International Energy Agency, shale gas emissions exceeded emissions from conventional gas production by 3.5–12%.
Voser said there needs to be more research on methane emissions.
“It’s also important to remember overall greenhouse gas emissions from shale gas-fired power are still only around half of those from coal, across the lifecycle from production to use,” he added.
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