Editing Pieee (section)

====Ammonia-based energy storage for concentrating solar power====
*'''Authors:''' Keith Lovegrove (Australian National University, Australia), John Pye (Australian National University, Australia), Greg Burgess (Australian National University, Australia), Rebecca Dunn (Australian National University, Australia)
*'''Contact email:''' keith.lovegrove@anu.edu.au
*'''Scope:''' Concentrating solar power uses mirrors to concentrate solar radiation to a hot focus. One method of storing this energy is based on the reversible dissociation of ammonia. In this storage system, a fixed inventory of ammonia passes alternately between energy-storing (solar dissociation) and energy-releasing (synthesis) reactors. Coupled with a Rankine power cycle, the energy-releasing reaction can be used to produce dispatchable power for the grid. At 20 MPa and 20<sup>o</sup>C, the enthalpy of reaction is 66.8 kJ/mol. The main advantage of an ammonia-based storage system is that energy is stored in chemical bonds, rather than heat. Therefore energy can be transported around a gigawatt-sized solar field with no heat losses from steam or oil lines. In addition, an ammonia-based storage system can leverage the substantial industrial experience of the ammonia industry.