Low temperature water heating is an important contributor to lowering the energy demand for heat in the residential, public and industrial sectors. Solar energy can be used to provide hot water for domestic or industrial purposes. Domestic low temperature hot water has applications in daily activities such as cooking, cleaning etc. Hot water requirement of varying temperatures can be achieved even during non-peak solar hours. Our parabolic dishes and High Temperature Vacuum Tubes (HTVTs) produce hot water that can be stored for 24 hours supply.