Open to the future of Energy

1. The first vertically integrated Solar Module Producer in Southeast Europe • Open to the future of Energy

2. Introduction Solar Cells Hellas PV Module Presentation

3. Introduction Solar Cells Hellas PV Module Presentation

4. Introduction Solar Cells Hellas PV Module Presentation

5. Introduction Solar Cells Hellas PV Module Presentation

6. SCH: Who we are 80 MW/yr www.schellas.gr SCH Group Multicrystaline Solar Production Facilities, Industrial Zone of Patras Solar Cells Hellas PV Module Presentation First Vertically integrated production in SE Europe Si Ingots Wafers Cells Modules PV Power Plants Electricity Turn-key development by GT Solar, world recognised turn-key solution provider Multicrystalline silicon solar wafers cells modules Foundation year: 2006 Total Production Capacity: 80 MWp/year Total building space: 14.000 m² Total investment: 120 M€

7. SCH: What we do – Si Wafer Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Wafer Production Capacity: 80MW/yr Silicon Ingot crystal growing Slice silicon ingots into bricks Slice silicon bricks into wafers Solar Cells Hellas PV Module Presentation Main Silicon Wafer Characteristics Crystal Multicrystalline Silicon Specificresistivity 0.5-2.0 Ωcm ≥1.8 μs Minority carrier lifetime Conduction type P (Boron doped) Shape of wafer Full Square (Bevel edge corners) 156.0 mm ±0.5 mm Dimensions Averagethickness 180/ 200μm ± 20 μm We acquire Innovative Manufacturing Process from the first step

8. SCH: What we do – Si Wafer Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology DSS Furnaces Squarer Wire Saw Solar Cells Hellas PV Module Presentation Feedstock Recycling Cleaning System Kiln Feedstock Wet blasting Cleaning System Grinding, Polishing and Chamfering System • Strategic co operations with PV leader equipment suppliers

9. SCH: What we do – Si Wafer Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology DSS Multicrystalline Ingot Growth Heat (≈4hrs), Melt (≈10hrs) Growth (≈18hrs) As growth proceeds, insulation rises and more molten Si solidifies DSS Furnaces Solar Cells Hellas PV Module Presentation Corners freeze last. Annealing steps follow growth and before cooling Multicrystalline Ingot

10. SCH: What we do – Si Wafer Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Multicrystalline Ingot Brick Cutting Multicrystalline Bricks and recyclable material Multicrystalline Ingot Squarer Solar Cells Hellas PV Module Presentation PEG used as coolant and lubricant agent (apart from being the dispersion medium) SiC acts as dispersed cutting media

11. SCH: What we do – Si Wafer Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Multicrystalline Brick Quality Control, Cropping, Polishing, Chamfering Solar Cells Hellas PV Module Presentation Removes surface fractures and damage from squarer Reinforces corners and edges reducing risk of corner and bevel defects

12. SCH: What we do – Si Wafer Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Wire Sawing, wafer degluing, wafer cleaning Multicrystalline Si wafer Solar Cells Hellas PV Module Presentation

13. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Multicrystalline Si Cell Production Capacity: 80MW/yr Solar Cells Hellas PV Module Presentation Maximum Power (Pmax): 4.05 W Solar cells SCH6P with average efficiency of 16.0% Multicrystalline Solar Cells – SCH6P We produce high-quality solar cells from high-quality wafers

14. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology PSG Diffusion Furnace Iso-Texturing Equipment Iso -Texturing Phospate Glass Removal Solar Cells Hellas PV Module Presentation Diffusion Furnace Firing Furnace Anti Reflective Coating Anti – Reflection Coating Firing Furnace MetallizationLine Laser Isolation Laser Isolation Metallization Line

15. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Iso-Texturing Iso-Texturing Solar Cells Hellas PV Module Presentation As-cut post-iso

16. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology N-type dopant diffusion and PSG removal Diffusion Furnace Solar Cells Hellas PV Module Presentation PSG layer being removed is only 0.0000003mm in thickness PSG

17. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Anti- Reflective Coating by PECVD Plasma Enhanced Chemical Vapor Deposition Anti Reflective Coating Post-iso Solar Cells Hellas PV Module Presentation Post-AR

18. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Metallisation through screen printing Back (+) Squeegee Screen Mesh Metallization Line paste Solar Cells Hellas PV Module Presentation Back wafer Front (-)

19. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Firing, laser edge isolation and cell testing Firing Furnace Grooving the front surface at the edge of wafer. Close loop. Only after laser cut does wafer become cell Solar Cells Hellas PV Module Presentation Laser Isolation Every single cell is tested and cells then sorted by voltage according to the produced power, sorting cells into bins of the same efficiency class Cell tester assembly

20. SCH: What we do – Si Cell Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Production Process Standards Core Advantages - Results Strict Quality Control & Testing standards under an ISO 9001: 2008 certified system Highest Quality & Reliable performance  Print Pressure Control metallisation method Quality Control  Stress Reduction Diode characteristics test via reserve current & shunt resistance sorting  Module hot spot occurrence elimination Performance Homogeneity in each delivered lot  Narrow current class & optical sorting  Micro – crack risk minimization Solar Cells Hellas PV Module Presentation  High color uniformity Acidic isotexture & Advanced AR coating deposition process employed  Excellent aesthetic result  Innovation Optimum Light Absorption Advanced & High process engineering level  High quality multicrystalline cells

21. SCH: What we do – Si Module Production Si Ingots Wafers Cells Modules Advanced Production Processing Technology Module Capacity: 35 MW/yr Multicrystalline silicon: • Most mature tested semiconductor technology for the production of electricity from solar irradiation • Most reliable proven technology for photovoltaic applications • Most suitable for wide range PV installations e.g. large size installations & small size domestic installations • Si: Cheap and abundant compared to other technologies • Cover the largest contribution in PV electricity production world-wide Multicrystalline PV Modules – SCH660P We operate new, state-of-the-art production equipment Solar Cells Hellas PV Module Presentation Inline sheeter Glass Washer Laminator Tabber stringer Production Technology Empowered by GT Solar

22. SCH: What we do – Si Module Production Si Ingots Wafers Cells Modules SCH660P& - Multicrystalline PV Modules Solar Cells Hellas PV Module Presentation

23. SCH: What we do – Si Module Production Si Ingots Wafers Cells Modules Advanced Product Components for SCH660P PV Modules Characteristics Frame • Cornercutting: 45 degrees • Long side: double wall • Short side: double wall • Screw holes punched: on long side • Punched holes: 4 mounting, 2 grounding, • 8 drainage holes • Surface treatment: Silver Anodized, • Sandblasting (Mat) Core Advantages Solar Cells Hellas PV Module Presentation  Durability: extremely long life span & significant economic advantages through maintenance and operating saving Stability:in all weather conditions  Color Stability: extremely long life span & significant economic advantages through maintenance and operating savings   Aesthetics: large increasing number of gloss and color alternatives & minimization or elimination of color variations  Better and safer handling Better drainage of water   Handy to install

24. SCH: What we do – Si Module Production Si Ingots Wafers Cells Modules Advanced Product Components for SCH660P PV Modules Characteristics Solar Glass • Texture: Prismatic/Matt • Iron content: ≤100 ppm • Dimensional tolerance: ±2.0mm • SPF certification: Class U1 • Thermal process: tempered • Thickness: 4 ± 0,2mm • Dimensions: 1642x981mm • Light transmission factor>91% Core Advantages Solar Cells Hellas PV Module Presentation  Diffuse reflection of the pattern to decrease the light reflection Anti-reflective (AR) coating glass with specially-designed coating reflects a very low % of light & ensures higher energy yield   High solar transmittance at any angle incidence  Very low solar absorbance by the glass itself  Non-toxic chemical composition - Conformity to environmental requirement  High strength glass and mechanical durability  Maximum transparency and optical clarity

25. SCH: What we do – Si Module Production Si Ingots Wafers Cells Modules Advanced Product Components for SCH660P PV Modules Backsheet & EVA EVACharacteristics Backsheet Characteristics • Full PET layer structure • reassuring no delamination • Gel content > 80% • 3000h of continuous damp hit test • Optical light transmission > 91% • Thickness: 295 μm • Width: 988 mm Solar Cells Hellas PV Module Presentation Core Advantages  Guarantee of total insulation at high voltages and perfect adhesion to EVA  Excellent resistance to the atmospheric agents, strong barriers to oxygen and humidity Designed to overcome the shelf life issue giving much more flexibility in production   Fast cure process ensuring process stability

26. SCH: What we do – Si Module Production Si Ingots Wafers Cells Modules Advanced Product Components for SCH660P PV Modules Junction Box & Cabling Core Advantages Junction Box Characteristics • By-pass diodes: 3  Reliable and safe throughout the lifetime of the PV Module • Bus wire terminals: 4  Total protection against contact, protection against penetration of dust • Bus wire terminals: solderless clips • Protection class: II  Total protection against ingress of water in case of continuous immersion • Protection degree: IP 65 • Contact resistance: ≤ 5.0 mΩ Solar Cells Hellas PV Module Presentation Core Advantages Characteristics Cabling  IP68 LC4 Connectors Easy Install Fast, easy to automate and secure connecting processes inside the junctionboxes   Permanently reliable system operation  Minimized contact resistance

27. SCH: What we do – Si Module Production Si Ingots Wafers Cells Modules PV Module Applications SCH660P& - Multicrystalline PV Modules: Designed to satisfy all PV applications Large-scale PV Systems  Grid-connected large-scale PV systems  Grid-connected roof systems / BIPV in cooperation with third party vendors Solar Cells Hellas PV Module Presentation  Stand alone systems  Commercial, industrial, domestic applications Roof systems Light up your future with Solar Cells Hellas!

28. Modules Characteristics Solar Cells Hellas PV Module Presentation

29. Modules Characteristics Solar Cells Hellas PV Module Presentation * measured at STC (Standard Test Conditions: 1000W/m², 25ºC, 1.5AM) ** Nominal Operating Cell Temperature: 800W/m², 20ºC, 1.5AM

30. PV potentialities • Potentialities: • PV industry has to reduce operational and material costs: • Conductive pastes in cell metallization: alternative materials (Cu) or reduce consumption by advanced processes. • Reduce kerf losses in wire sawing: minimize wire diameter. Solar Cells Hellas PV Module Presentation

31. PV potentialities • Potentialities: • PV industry has to reduce operational and material costs: • Increase €/W: Improve electrical efficiency of cells/modules by integration of advanced processes and techniques. e.g: selective emitter Solar Cells Hellas PV Module Presentation

32. PV potentialities • Potentialities: • PV industry has to reduce operational and material costs: • Increase €/W: Improve electrical efficiency of cells/modules by integration of advanced processes and techniques. e.g: install micro-inverter per module instead of central units Microinverter per module Solar Cells Hellas PV Module Presentation

33. PV future markets • Future markets: • BIPV: Building-integrated photovoltaics • Module design based on semi-transparent materials to visible light. • Save amount spent on building materials. Solar Cells Hellas PV Module Presentation

34. PV future markets Thank you for attention Solar Cells Hellas PV Module Presentation