STEP

The UK Atomic Energy Authority’s (UKAEA’s) ground-breaking STEP (Spherical Tokamak for Energy Production) prototype fusion energy plant will be built at the site of the West Burton power station, a 1-GW coal-fired plant owned by EDF in North Nottinghamshire, in the East Midlands region of England, the UK government announced on Oct. 6. UKAEA, which carries out […]

Construction of the 10-MWe Supercritical Transformational Electric Power (STEP) pilot plant, a public-private collaboration to demonstrate and test supercritical carbon dioxide (sCO2) power generating technology, is making marked progress toward a mid-2022 startup date.  Attendees from Experience POWER, HydrogeNext, and the Distributed Energy Conference, three of POWER’s annual in-person events, which took place last week in […]

Siemens Energy and Canadian pipeline company TC Energy in February agreed to commission a novel waste-heat-to-power facility in Alberta by 2022 that captures waste heat from a gas-fired turbine operating a

While conventional power plant cycles produce power from turbines using water or steam as the working fluid, supercritical carbon dioxide (sCO2) cycles use CO2 that is in a supercritical state—at a temperature and pressure above its critical point where liquid and gas phases are not distinguishable.  CO2 has a relatively low critical pressure of 7.4 megapascal […]

Supercritical carbon dioxide (sCO2) cycles—which are inching closer to commercial applications for waste heat recovery, concentrating solar power, nuclear, and fossil energy—offer higher thermal efficiencies and power density than conventional steam Rankine and Air Brayton cycles in use today for power generation. But to realize these potentially game-changing cycles, common challenges associated with turbomachinery must […]