Solar Electricity Supply with Flexible Autonomous PV-Diesel Hybrid Systems - The Truth Behind.pptx

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1. q Solar Electricity supply with Flexible autonomous PV-Diesel Hybrid Systems - The truth behind Philipp Otter, AUTARCON GmbH

2. Content Solar Energy Suppply from an German Perspective Energy and Energy Efficiency Awareness with respect to TZ Purpose To start the workshop – lets play with some numbers Bring TZ back on right track energetically and economically when it comes to energy supply Developed world has invested into fossil fuels many years ago Today there are better options …

3. Kassel

4. Kassel: 20 MW of PV are connected per day globally

5. Typical solar system ? These systems substitute Kerosine Here we do not talk about these system

6. Solar technology – become an e ntrepreneur

7. Grid Inverters

8. Feed in Tariff – still a success story everybody with a roof wants to be an entrepreneur Rapid decrease of module prices Reduction of feed in tariff based on price dumping from China.

9. PV- P rice learning curve In the last 24 months cost /kWh solar electricity was cut in half

10. Worldwide growth of PV-installations ( cumulative )

11. Tanzania Tanzania   Inhabitants (2012) Around 45 Million, 44 % being younger than 15 years Increase in Population 2,8 %/a Persons per km 2 51 (Germany: 229) Area 945.000 km 2 (Germany: 357.000 km 2 ) Electrification rate (2013) 18,4 % Sunshine hours per year 2.800 – 3.500 h/a (Kassel 1.445 h/a) People living in rural areas (2012) 73 % Annual economic growth rate around 6 % GDP (2012) 28 Billion US Dollar GDP shares (2012) 28 % Agricultural, 25 % Industry, 47 % tertiary sector Power plants (2012) 1.500 MW 900 being from fossil fuels, 600 being Water Power (in 2004, Water made up 94% of electricity production in Tanzania) Electricity “production” (2012) 3,1 Billion kWh, 2,7 Billion kWh were bought from other companies than TANESCO and neighbouring countries Source: Nico Ulmer

12. Energy Outlook Tanzania 2035 Plant capacity in MW Source: Nico Ulmer Fossil Power Plants Imports Renewables Hydro Wind Photovoltaik Biomass

13. Flow of e nergy common fossil power plant Heat 70 % Electricity 30 % Coal , Gas, Oil 100% Wherever energy is converted heat is produced!

14. Energy Outlook Tanzania 2035 Fossil Power Plants Imports Renewables Hydro Wind Photovoltaik Biomass + 16.000 MW Heat Source: Nico Ulmer

15. Efficiency of Solar PV Electricity 12 - 15 % Solar Radiation 100 %

16. Fossil fuel and biomass combustion Heat 0,7 % Electricity 0,3 % Coal , Gas, Oil , Energy crops m ax. 1% Biomass production Photosysnthesis max 1% Solar Radiation 100 %

17. Efficiency of Solar PV Electricity 12 - 15 % Solar Radiation 100 %

18. You want a real example ? Lets check out NM-AIST Campus!

19. What is this ?

20. Energy conversion in a Dieselgenerator Diesel 1: 80 kWel Diesel 2: 144 kWel Total Diesel Power: 225 kWel Efficiency? ~ 25%  225 kW/0,25 = 900 kW Operational time 13 h/ day  12 , 000 kWh/ day Energy content of 1 L of Diesel? 11 kWh/L 12,000(kWh/d)/ 11(kWh/L) = 1,065 L/ day Costs of Diesel in TZ? 1 USD/L  1,000 USD/d

21. Flow of e nergy Diesel Heat 75 % 800 L Electricity 25 % 266 L Diesel 100% 13h/ day at full capacity 1,065 L/ day , 12 MWh

22. What is this ? 30 Energy saving lamps each 20 W 30 Common lamps each 120 W Energy savings : 90 W / lamp * 30 Lamps = 2.700 W @ 10 hours pery day  27 kWh per day 2.5 L/ day ( electricity ) + 10 L/ day ( heat ) Is that a lot ?

23. What is this Water Boiler Energy consumption ? 1.500 W @ 20 h per day  30 kWh/ day  2.8 L ( electr .) + 11 L ( heat ) How many boilers are on Campus? 50  140 L + 550 L 100  280 L + 1100 L Who had a hot shower this morning ? Water consumption : 40 L  40 L / Shower  0,11 L + 0,42 L

24. What is this ?

25. Probably, the least efficient way of cooling

26. Power consumption of airconditioning 17.000 W 5 hours per day 6 Units  510 kWh/ day  47 L ( elect .) + 186 L ( heat )

27. Are you cold ?

28. So lets open the door a bit

29. One option to adapt – Solar/Diesel Hybrid

30. Solar Radiation goes along with power requirements

31. Economics of Hybrid Systems

32. Become independent from fossil fuels

33. What is this ?

34. Thank you very much

35. Solar Conference Cairo