Read about Sage Geosystems’ recent field testing of our energy storage system deep in the earth (EarthStore™)! Having started the testing of Sage’s energy storage technologies in November 2021, Sage has accumulated nearly 6 months of field testing to date.
These tests have allowed Sage to demonstrate: (a) power generation duration is proportional to the volume stored in the fracture and (b) the ability to dispatch power at various rates by varying the flow rate from the fracture. Round trip, meter in to meter out, storage efficiency is estimated at 75%. When we drill a well deep enough to access BHTs high enough to harvest heat for electricity generation (Battery+™), the efficiency goes to 200% as Sage is both storing and generating energy! At $3mln/MW, EarthStore is already cost-competitive with lithium-ion batteries for storage durations greater than 4 hours. In addition, Sage’s energy storage technologies build to and are used for geothermal baseload power generation. External validation of Sage’s test results is ongoing and will be published in the near future. More to come…
Many thanks to Siggi Meissner and Tamás Csrefkó with Nabors for visiting our most recent field tests.
Read the article here.
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