High density thermal storage arrangement

A method of providing supplementary power for an electrical grid network and storing of energy in periods of excess electrical energy comprising transporting a charged large capacity thermal based energy storage arrangement from an energy producing first geographic region having a source of energy used to charge said large capacity thermal based energy storage arrangement to a net energy consuming second geographical region;

• the large capacity thermal based energy storage arrangement being positioned within a ship hull of a ship;
• the method comprising;
• connecting the large capacity thermal based energy storage arrangement to an energy producing electrical grid network;
• using the energy producing electrical grid network in selected periods of excess electrical power to power a plurality of embedded electrical heaters in said large thermal based energy storage arrangement to convert and store the excess electrical power as thermal energy in said large capacity thermal based energy storage arrangement;
• moving said ship from the energy producing first geographic region to the net energy consuming second geographical region;
• connecting said large capacity thermal based energy storage arrangement to a thermal energy conversion system;
• connecting said thermal energy conversion system to an energy consuming electrical grid network;
• using thermal energy from said large capacity thermal based energy storage arrangement to circulate a working fluid powering said thermal energy conversion system and produce electrical power for the energy consuming grid network to supplement the power thereof.