Imperial College London


Faculty of EngineeringDepartment of Chemical Engineering

Professor of Clean Energy Technologies



+44 (0)20 7594 1601c.markides Website




404ACE ExtensionSouth Kensington Campus






BibTex format

author = {Mellor, A and Alonso, Alvarez D and Guarracino, I and Ramos, A and Riverola, Lacasta A and Ferre, Llin L and Murrell, A and Paul, D and Chemisana, D and Markides, C and Ekins-Daukes, NJ},
doi = {10.1016/j.solener.2018.09.004},
journal = {Solar Energy},
pages = {386--398},
title = {Roadmap for the next-generation of hybrid photovoltaic-thermal solar energy collectors},
url = {},
volume = {174},
year = {2018}

RIS format (EndNote, RefMan)

AB - For hybrid photovoltaic-thermal collectors to become competitive with other types of solar energy converters, they must offer high performance at fluid outlet temperatures above 60 °C, as is required for space heating and domestic hot water provision, which together account for nearly 50% of heat demand. A roadmap is presented of the technological advances required to achieve this goal. Strategies for reducing convective, radiative and electrical losses at elevated temperature are discussed, and an experimental characterisation of a novel transparent low-emissivity coating for photovoltaic solar cells is presented. An experimentally-validated simulation formalism is used to project the performance of different combinations of loss-reduction strategies implemented together. Finally, a techno-economic analysis is performed to predict the price points at which the hybrid technologies along the roadmap become competitive with non-hybrid photovoltaic and solar thermal technologies. The most advanced hybrid technology along the roadmap employs an evacuated cavity, a transparent low-emissivity coating, and silicon heterojunction photovoltaic cells.
AU - Mellor,A
AU - Alonso,Alvarez D
AU - Guarracino,I
AU - Ramos,A
AU - Riverola,Lacasta A
AU - Ferre,Llin L
AU - Murrell,A
AU - Paul,D
AU - Chemisana,D
AU - Markides,C
AU - Ekins-Daukes,NJ
DO - 10.1016/j.solener.2018.09.004
EP - 398
PY - 2018///
SN - 0038-092X
SP - 386
TI - Roadmap for the next-generation of hybrid photovoltaic-thermal solar energy collectors
T2 - Solar Energy
UR -
UR -
VL - 174
ER -