Sunshine is our business. What makes a good solar module Frank Heise / June 2011
AGENDA About Centrosolar What we take care of
About Centrosolar ORGANISATION Renusol Köln Centrosolar Glas Fürth Solarsquare Schweiz Centroplan Geilenkirchen Centrosolar AG Hamburg Paderborn Kempten International Sales Organisations Spain, France, Italy, Greece, Benelux, USA, SAS Solar Key Components Integrated Systems Centrosolar Sonnenstromfabrik Wismar 2
About Centrosolar HISTORY OF SONNENSTROMFABRIK 1996 Founding of SOLARA AG 2001 1. Step in Technology- and commercial centre Wismar at University Wismar 2005 new facility (1000 m²) + additional warehouse 2008 Construction of new site and facility (15,000 sqm) 2010 Expanding to 200 MWp August 2001 foundation as SOLARA Sonnenstromfabrik Wismar GmbH 2003 expansion in the TGZ + additional warehouse 2006 SOLARA AG becomes part of the Centrosolar AG -2008 new name CENTROSOLAR Sonnenstromfabrik GmbH 2011 Expanding to 300 MWp 3
About Centrosolar CONSTANT GROWTH 350 Capacity growth in MWp of Sonnenstromfabrik 300 250 200 150 Capacity growth in MWp of Sonnenstromfabrik 100 50 0 2001 2003 2005 2008 2009 2010 2011 planned 4
About Centrosolar SYSTEM SUPPLIER One stop shopping at Centrosolar 5
SHOCK THERAPY 6
QUALITY AND CERTIFICATION External Product certification: IEC61215 /IEC61730/UL1730 Periodical factory inspection VDE, TÜV und UL Certified Quality- and Environmental Management System at CS Sonnenstromfabrik in Wismar according ISO 9001:2008 and ISO 14001:2009 ISFH and Fraunhofer ISE: round robbin (modul power confirmation) Fresenius Institut: EVA curing rate (long term stability assurance of EVA) UV- and Climatic camber test (damp-heat, thermal-cycling, humidity freeze) 7
REKNOWN HIGH QUALITY COMPONENTS 8
HIGH QUALITY EQUIPMENT 9
CONTROLLING SOLDERING QUALITY BY BEST PROCESS Induction Soldering -Low stress on cells -Fast process Hot Pin Soldering -Stable process -Process optimized for all material cobinations Hot Air Soldering -Low stress on cells -No touch of cells 10
INHOUSE TESTS Internal Supplier qualification and evaluation, inclusive factory inspection for all key suppliers Detailed production control processes and control steps Customer complaint analysis and systematical corrective action implementation Continuous improvement process Knowledge influences supplier qualification Plan to certify CS AG according ISO 9001 within this year 11
MODULE PRODUCTION PROCESS Solar cell AR glass Aluminium frame Edge corner piece Packaging Cell tabbing & stringing layup interconnection of strings, sheet feeding Lamination Post lamination Framing Measurement; Packing String connector EVA foil Back skin Connectors Junction box 12
QUALITY MONITORING Check of incoming goods Declaration of own charge system In house testings Field experience Test system on the factories roof Definition of supplier requirements Supplier audits 13
FIELD EXPERIENCE 200kW power grid connected different modules different materials datalogging 14
INHOUSE TESTINGS UV- and climatic camber test temperature variation damp-heat-test reactivity of BSF EVA curing rate development of own test procedures mechanical stress test for frames, glas, complete modules 15
PULL-OFF-TEST OF SOLDER-CONNECTION AND EL-TESTING 16
WE ALSO TAKE CARE OF Junction box - kind of protection: IP65 - CE conform - Safety Class II - robust and water proof Cable - very robust and flexible - large cross-section for high currents - resistance against abrasion, chemicals, weather and UV Bypass diode (Schottky diode) - low voltage drop in case of bypassing low power consumption - ultra low reverse current (max. 5mA) - wide temperatur range - ensure modul power despite shadows Connectors - contact security - small dimensions - low transition resistance - simple connect 17
AND IF EVERYTHING WORKS WELL Centrosolar S-Series or Centrosolar S-Class modules is the result 18
Sunshine is our business. Thanks for your attension! 19
Sunshine is our business. Complete Systems Planning and Projecting Mounting Systems PV-Glas Module Manufacturing Stand Alone Systems Thin Film Roof Integration www.centrosolar.com ISIN: DE0005148506 Prime Standard Deutsche Börse This document contains forward-looking statements and forecasts based on assumptions and estimates made by CENTROSOLAR Group AG management. While we assume that the expectations of these forward-looking statements are realistic, we cannot guarantee that the expectations will prove to be correct. The assumptions may conceal risks and uncertainties which may lead to actual results significantly divergent from those made in the projective forecasts. The factors that can cause such a divergence include: changes in foreign exchange control or the economic and business environment, currency exchange rate fluctuations, the low market entry barriers for competitors, insufficient acceptance of new products or services and changes in corporate strategy. No update of the projected forecasts contained herein is planned, nor does CENTROSOLAR Group AG assume any obligation to do so.