Prof. Dr. Volker Quaschning Hochschule für Technik und Wirtschaft HTW Berlin The Solar Revolution – New Ways for Climate Protection with Solar Electricity The Solar Revolution – New Ways for Climate Protection with Solar Electricity www.volker-quaschning.de ECO Summit ECO14 3. June 2014 Berlin
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Prof. Dr. Volker QuaschningHochschule für Technik und Wirtschaft HTW Berlin
The Solar Revolution – New Ways for Climate Protection with Solar Electricity
The Solar Revolution – New Ways for Climate Protection with Solar Electricity
Prognosis based on the goals of the German government
Constant level of fossil power generation
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
0% 50% 100%
RWE
e.on
Vattenfall
EnBW
Germany
energytransition
hydro power
other renewables
nuclear power
fossil power
others
Renewable Electricity Share in Germany
5
Year 2012/13- own calculations on the base of available data from the big utilities
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
Comedown of Photovoltaics in Germany
6
0
2
4
6
8
10
12
14
2007 2008 2009 2010 2011 2012 2013 2014
new
ly in
stal
led
PV p
ower
in G
W
China Germany
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
7
Thesis I
The big utilities have the wrong power stations for the energy transition and must slow down the development to save their profits.
A reliable electricity supply with 100% renewable energy is possible. The cost argument is only used to slow down the speed of the Germany energy transition.
Assumptions: burner efficiency 80%, calorific value of fuel oil 10.5 kWh/l
fuel oilparity
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
PV-Heat Pump System
12
photovoltaicmodules
freshwaterstation
hot waterstorage
inverter
consumermeter
control
=
grid
radiatorsheatpump
kWh888.888
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
Electricity Savings with PV–Heat Pump Systems
13
Installed photovoltaic power 7 kW (approx. 50 m²) without battery
21%
79%
32%
68% 70%
30%
old house175 kWh/(m² a)
new house95 kWh/(m² a)
passive house15 kWh/(m² a)
One family house: usable floor area 127 m², location Berlin, air-water heat pump, PV system 7.2 kWp, hot water tank 500 l Household electricity demand 3940 kWh/a, drinking water demand 15.5 kWh/(m² a)