The goal of the CSP+ project is to create a hybrid photovoltaic (PV) and concentrating solar thermal power (CSP) system that has an LCOE (levelised cost of energy) in Flanders that is at least 25% lower than the LCOE of the current standard CSP technology. This LCOE reduction is achieved by the fact that the PV-CSP hybrid system will have a much higher energy yield (roughly 50% higher, see also Table 1) due to the usage of diffuse incoming light, while the cost of the PV-CSP system will be only around 10-20% higher than that of a standard CSP system.
This main goal will be realised in the project by achieving the following objectives, grouped by the innovation that they serve:
- A dichroic mirror transparency of >80% in the spectral range of e.g. 500…1100 nm and a reflection of >80% in the spectral range outside of this window, the exact range of which has to be optimized (Innovation 1).
- Bifacial silicon solar cells with 20% energy conversion efficiency (measured under full spectrum) operating in the spectral range of 500-1100nm and compatible with integration in a CSP system (Innovation 2).
- Bifacial solar modules with novel state-of-the-art encapsulation material and interconnection technology yielding a Cell to Module loss below 3% measured under full light spectrum (Innovation 2).
- A full simulation model that allows predictive modelling of the thermal, optical and electrical properties of the full PV-CSP system (Innovation 3).
- Realisation of a full life cycle environmental assessment (LCA) and life cycle cost analysis (LCC) report for the proof of concept system (Innovation 3).
- A short-term forecasting model that will be implemented in the new PV-CSP system to maximize the power output of such systems by steering the mirror position of the system towards the optimal position under all possible operating conditions (Innovation 4).
- The validation of the research by assembly into a CSP system and full characterization of four proof of concept CSP+ mirrors with an area of 1x1.2 m2 (Innovation 5).
The role of EnergyVille
VITO/EnergyVille, with the support of the other partners, will make a life cycle assessment (LCA) of the CSP+ system and benchmark against state of the art existing technologies for electricity and heat production. Additionally, EnergyVIlle/VITO will set up a holistic cost model for the CSP+ system which will enable the evaluation of the economic impact.