Carbon Sequestration Potential: Map of US Shale Reservoirs & Power Plants (image) DOE/Pacific Northwest National Laboratory Share Print E-Mail Caption PNNL research is digging into using empty space in underground shale formations to permanently store carbon emissions from power plants. This map shows where shale gas formations (purple dots) are near carbon-emitting power plants (orange dots). Credit Pacific Northwest National Laboratory Usage Restrictions Credit PNNL Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.