Research School for Socio-Economic and
Natural Sciences of the Environment
Research School for Socio-Economic and
Natural Sciences of the Environment
Agenda

Geert Litjens

Date: 14 December 2018
Time: 12:45 - 13:45
Location: University Hall, Domplein 29, Utrecht

Dissertation title: 

Here comes the sun: Improving local use of energy generated by rooftop photovoltaic systems

Group: Utrecht University, Energy and Resources
Promotors: Prof.dr. Ernst Worrell and prof.dr. Wilfried van Sark 

Abstract:

Photovoltaic (PV) systems installed on buildings will play an important role in the energy transition. These will be mainly connected to the low voltage grid and call for research on integration measures. This thesis focused on exploring benefits of using locally PV power. Residential dwellings can consume one third of the PV generated energy directly. Commercial buildings have a higher self-consumption of 44%. Curtailing 50% of the rated PV peak power results in 4% energy loss, which can be reduced to almost zero with battery energy storage. Residential PV systems have a lower payback period than commercial systems, due to the larger benefits of self-consumption. Energy storage is currently not profitable for self-consumption. Avoided life cycle greenhouse gas emissions are 14 ton of CO2-eq for residential dwellings with PV. Support for relative large residential PV systems and implementing a feed-in limit are recommendations for a further growth of PV.





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