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
www.volker-quaschning.de
ECO Summit ECO143. June 2014
Berlin
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
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Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
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reduction pathfor the two degree target
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Global Requirements for Climate Protection
data: WRI, IEA, PIK-Potsdam
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
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Development of Electricity Generation in Germany
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
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RWE
e.on
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EnBW
Germany
energytransition
hydro power
other renewables
nuclear power
fossil power
others
Renewable Electricity Share in Germany
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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
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China Germany
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
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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.
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
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ct/k
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EEG tariff PV < 10 kWdomestic electricity price
Development of Electricity Prices
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gridparity
cost advantageof ownconsumption
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
>27 ct/kWh13 ct/kWh
Photovoltaic Own Consumption System
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photovoltaicmodules
consumer
inverter
meter
grid
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
Photovoltaic Own Consumption System with Battery
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consumer
photovoltaicmodules
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meter
grid
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
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EEG tariff PV < 10 kWfuel oil + 10% p.a.fuel oil + 1% p.a.
Development of Domestic Fuel Prices
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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
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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
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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)
photovoltaicsmains supply
33%
Heat pump electricity
Householdelectricity
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
PV power perone family house kWp 2 4 4 7
Battery capacity kWh - 4 - 5Heat storage l - - 800 800Own consumption % 50 70 85 83
PV potential in Germany GWp 26 52 52 90
PV Potential at One Family Houses in Germany
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Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
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Conclusions
For protecting the livelihood of future generations we need a real energy revolution with 100% renewables until 2040.
Wen can take the energy revolution in our own hands. Own consumption systems give us the key.
Policy and big business are not able to protect our natural resources.
Prof. Dr. Volker Quaschning
Hochschule für Technik und Wirtschaft Berlin
Now, it is up to us all to force through, …
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…the energy revolution.Policy and big industry have failed.
Our children will thank us for it.