1. First school in SLOVENIA with solar power plant Authors: Janez Troha Istok Lenarčič Mentors: Valentin Peternel Mirja Mrovlje Pečnik ∆ SŠTS Šiška March 2008

2. Our solar power plant is quite powerful. It produces a maximum of 25,16 kW of electrical energy. That’s enough to rent it out into Elektro Ljubljana’s power network.

3. We use our power plant to educate: Solar technology Information tech. Development All that thanks to the fact that we have a smaller, 3,74kW polygon exclusively meant to educate our students.

4. We use it to educate our students about setting up and planning solar power modules and it’s systems. We are proud to be the first in Slovenia to educate a school program called SOLAR TECHNICIAN

5. The second, and bigger 21,42kW polygon is being used to distribute electrical energy to Elektro Ljubljana’s power network. So far,we have produced a total of 9 437 kWh of energy or we have reduced CO2 emissions for 6 606 kg Which is enough for hours of dish washing 5 895 hours of dish washing uses of hair dryer for 15 minutes 20 132 uses of hair dryer for 15 minutes hours of laundry washing 3 431 hours of laundry washing

6. We chose solar power modules with best utilisation rate MONOCRYSTALLINE TYPE 12 - 16% efficiency (170w) per cell

7. A solar cell or photovoltaic cell is a device that converts solar energy into electricity by the photovoltaic effect. We chose company Kon Tiki d.o.o. to set up our power modules.

8. Converts direct current (DC) to alternating current (AC) and synchronises it with Elektro Ljubljana’s power network. Current products on market offer integrated all kinds of protection circuits and do the synchronising part aswell.

9. Measures amount of electrical energy, that was sent out into electrical power network.

10. (Project realisation)

11. Project realisation began with planning the whole system, which among other things includes picking the right spot for installation of our solar power modules.

12. Setting up our solar power plant

13. Inverters are plugged to public electrical network trough so called “separative measurement place”. Separative measurement place ensures reliable separation of generator and public electrical network, which in case of malfunctions prevents material damage from the side of power network or vice versa.

14. Solar and other alternative power sources certainly are our future. It's up to us to replace environmental- unfriendly power sources as soon as possible. Let's keep our nature, that is hosting us on this beautiful planet clean!

15. GCS: Solarni sistemi © Bojan Grobovšek [2007] http://gcs.gi-zrmk.si/Svetovanje/Clanki/Grobovsek/PT237.htm http://gcs.gi-zrmk.si/Svetovanje/Clanki/Grobovsek/PT237.htm Illustrations: © Janez Troha [2008] Photographs: Zdavko Žalar [2007] Neznana Oseba [2007] Wikipedia: Electricity Meter (GNU FDL license) [2008] http://en.wikipedia.org/wiki/KWh_meter Documentation © Kon Tiki Solar d.o.o [2008]