A Swiss geothermal energy project, designed to generate electricity for 900 homes and heat thermal baths, has been suspended because it doesn't have enough hot water to pump.
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Un proyecto geotérmico suizo queda paralizado por problemas técnicos
But the project has been suspended amid technical troubles in getting enough water into the 2,956 metre deep bore hole.
“Contrary to expectations the drilling operation has not produced a sufficiently powerful water flowrate to generate electricity,” the project organisers said on MondayExternal link.
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Can deep geothermal projects help secure Swiss energy independence?
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The climate crisis and the war in Ukraine have underlined the need to develop renewable energy sources like geothermal.
The project’s goal is to harness water that is heated to at least 110 degrees Celsius, with an ideal flowrate of 40 litres a second, to generate electricity. Deep underground the boiling point of water is higher than at ground level due to greater pressures.
It has been sited to tap into naturally occurring hot springs to create renewable energy.
But despite the setback, the company that runs the project, Alpine Geothermal Power Production (AGEPP), refused to concede defeat. It will conduct analysis to get to the root of the problem.
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Heat from the ground, it’s there for the taking
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In April, Lyesse Laloui, head of the Laboratory of Soil Mechanics at the Federal Institute of Technology in Lausanne (EPFL) will host a meeting of world specialists in “energy geostructures” for a workshop that has the support of the American National Science Foundation. EPFL were the first to test in real conditions the behaviour of heat…
“All is not lost, because the temperature at the bottom of the borehole is good,” said AGEPP boss Jean-François Pilet. “We have proven that it is possible to dig 3,000 meters deep in an alpine massif of very hard rock. This is positive for further drilling.”
The technical issues at Lavey-les-Bains comes as Switzerland prepares itself for gas shortages this winter and is actively looking for ways to increase the share of renewable energy production.
In Lavey-les-Bains, however, tests “did not record the slightest seismic activity stemming specifically from the operation within its vicinity.”
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Switzerland braces for winter energy crunch
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Explainer: why is there a risk of an energy shortage this winter? What is Switzerland doing to reduce gas and electricity consumption?
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Geothermal sector faces heat of public scrutiny
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But supporters insisted there is no chance of the promising alternative energy source dying a death in Switzerland despite the Basel experiment ending in earthquake damage and a criminal court case. The Deep Heat Mining project in Basel was officially abandoned last month after triggering earth tremors that caused SFr9 million ($8.7 million) in damage…
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Fredy Brunner, the member of the city council responsible for technical operations, announced the decision on Tuesday, having informed Swiss Energy Minister Doris Leuthard the previous day. The decision was taken after consultations with various experts, he said. The borehole has been stabilised and pipes have again been inserted to a depth of 4,000 metres.…
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Despite the failure of the ambitious Deep Heat Mining project in Basel, which was put on hold in 2007 after drilling work triggered a series of small earthquakes, several other Swiss cantons have declared an interest in geothermal power. The SFr200 million ($173 million) Geneva project, initiated by the local power company Services Industriels de…
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