The Solar Revolution – New Ways for Climate Protection ... · Prof. Dr. Volker Quaschning Hochschule für Technik und Wirtschaft HTW Berlin The Solar Revolution – New Ways for

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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1900 1920 1940 1960 1980 2000 2020 2040 2060 2080 2100

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climate protection

businessas usual

formerdevelopment

Crossroads to Climate Catastrophe

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Data: NASA, IPCC



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former CO2 emissions

reduction pathfor the two degree target

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Global Requirements for Climate Protection

data: WRI, IEA, PIK-Potsdam



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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



0% 50% 100%

RWE

e.on

Vattenfall

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



Comedown of Photovoltaics in Germany

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2007 2008 2009 2010 2011 2012 2013 2014

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ly in

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PV p

ower

in G

W

China Germany



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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.



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ct/k

Wh

EEG tariff PV < 10 kWdomestic electricity price

Development of Electricity Prices

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gridparity

cost advantageof ownconsumption



>27 ct/kWh13 ct/kWh

Photovoltaic Own Consumption System

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photovoltaicmodules

consumer

inverter

meter

grid



Photovoltaic Own Consumption System with Battery

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consumer

photovoltaicmodules

inverter

battery

meter

grid



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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



PV-Heat Pump System

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photovoltaicmodules

freshwaterstation

hot waterstorage

inverter

consumermeter

control

=

grid

radiatorsheatpump

kWh888.888



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



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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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.



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.



For Further Reading…

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www.volker-quaschning.de

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The Solar Revolution – New Ways for Climate Protection ... · Prof. Dr. Volker Quaschning Hochschule für Technik und Wirtschaft HTW Berlin The Solar Revolution – New Ways for