The Solar Revolution New Ways for Climate Protection with Solar Electricity

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1 The Solar Revolution New Ways for Climate Protection with Solar Electricity Hochschule für Technik und Wirtschaft HTW Berlin ECO Summit ECO14 3. June 2014 Berlin

2 Crossroads to Climate Catastrophe 6 global temperature increase in C former development business as usual climate protection Data: NASA, IPCC 2

3 Global Requirements for Climate Protection Mt reduction path for the two degree target CO 2 emissions related to energy former CO 2 emissions data: WRI, IEA, PIK-Potsdam 3

4 Development of Electricity Generation in Germany Prognosis based on the goals of the German government Constant level of fossil power generation 4

5 Renewable Electricity Share in Germany Year 2012/13- own calculations on the base of available data from the big utilities energy transition Germany EnBW hydro power other renewables nuclear power fossil power others Vattenfall e.on RWE 0% 50% 100% 5

6 Comedown of Photovoltaics in Germany newly installed PV power in GW China Germany

7 Thesis I Hochschule für Technik und Wirtschaft Berlin 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. 7

8 Development of Electricity Prices EEG tariff PV < 10 kw domestic electricity price 40 grid parity ct/kwh cost advantage of own consumption 8

9 Photovoltaic Own Consumption System photovoltaic modules inverter consumer >27 ct/kwh grid meter 13 ct/kwh 9

10 Photovoltaic Own Consumption System with Battery photovoltaic modules inverter consumer grid meter battery 10

11 Development of Domestic Fuel Prices Assumptions: burner efficiency 80%, calorific value of fuel oil 10.5 kwh/l EEG tariff PV < 10 kw fuel oil + 10% p.a. fuel oil + 1% p.a ct/kwh fuel oil parity 11

12 PV-Heat Pump System photovoltaic modules inverter = control fresh water station hot water storage heat pump radiators consumer meter kwh grid 12

13 Electricity Savings with PV Heat Pump Systems Installed photovoltaic power 7 kw (approx. 50 m²) without battery old house 175 kwh/(m² a) Heat pump electricity new house 95 kwh/(m² a) passive house 15 kwh/(m² a) 21% 32% 30% 79% 68% 70% photovoltaics mains supply 33% Household electricity 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) 13

14 PV Potential at One Family Houses in Germany PV power per one family house kwp Battery capacity kwh Heat storage l Own consumption % PV potential in Germany GWp

15 Conclusions For protecting the livelihood of future generations we need a real energy revolution with 100% renewables until Policy and big business are not able to protect our natural resources. Wen can take the energy revolution in our own hands. Own consumption systems give us the key. 15

16 Now, it is up to us all to force through, the energy revolution. Policy and big industry have failed. Our children will thank us for it. 16

17 For Further Reading 17