Lochterra encompasses two aspects. An engineering and business consultancy continuing to pursue opportunities in the oil and gas industry including CCS, now as well in GHG emission-free energy fields such as geothermal, thermal solar, residual heat, and heat energy networks. Developing technologies that unlock vast opportunity for utilising heat energy for GHG-emission-free generation, heating, and cooling from otherwise stranded geothermal, thermal solar, residual heat, and other heat resources. Lochterra is developing technologies that will unlock immense opportunity to utilise GHG-emission-free heat energy otherwise stranded by enabling energy networks to convey heat over long distances. These concepts can enable applications not feasible utilising contemporary water-based systems.