•    Deepali Atheaya, Arvind Tiwari, G.N. Tiwari, I.M. Al-Helal. Performance evaluation of inverted absorber photovoltaic thermal compound parabolic concentrator (PVT-CPC): Constant flow rate mode, Applied Energy, 167, 1 (2016), 70-79.

•    Rohit Tripathi, G.N. Tiwari, I.M. Al-Helal. Thermal modelling of N partially covered photovoltaic thermal (PVT) – Compound parabolic concentrator (CPC) collectors connected in series, Solar Energy, 123 (2016), 174-184.

•    G.N. Tiwari, Hemshikha Saini, Arvind Tiwari, Arjun Deo, Neha Gupta, Padamveer Singh Saini. Periodic theory of building integrated photovoltaic thermal (BiPVT) system, Solar Energy, 125 (2016), 373-380.

•    C.S. Rajoria, Sanjay Agrawal, Amit K. Dash, G.N. Tiwari, M.S. Sodha. A newer approach on cash flow diagram to investigate the effect of energy payback time and earned carbon credits on life cycle cost of different photovoltaic thermal array systems, Solar Energy, 124 (2016), 254-267.