A solar energy collector and/or concentrator, a thermal energy storage and retrieval system including the same, and methods of storing and recovering thermal energy are disclosed. The solar energy collector and/or concentrator may include an array of lenses configured to concentrate solar energy, a plurality of conduits through which a heat storage or heat transport fluid flows, and one or more heat transfer elements on each of the conduits, configured to receive the concentrated solar energy from the lenses and transfer the concentrated solar energy to the heat storage/transport fluid. The conduits are configured to move in at least first and second angular dimensions. The thermal energy storage and retrieval system may include the solar energy collector and/or concentrator, a thermodynamic cycle, and a heat storage and retrieval subsystem. Heat is transferred from the heat storage/transport fluid to the heat storage and retrieval subsystem and/or the thermodynamic cycle.