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Forward-Looking Statements Certain statements contained in this presentation constitute forward-looking statements. These statements relate to future events or SolarWorld Solicium s future performance, business prospects or opportunities. Forward-looking statements include, but are not limited to, statements with respect to commercial mining operations, anticipated mineral recoveries, protected quantities of future mineral production, interpretation of drill results, anticipated production rates and mine life, operating efficiencies, capital budgets, costs and expenditures and conversion of mineral resources to proven and probable mineral reserves, analyses and other information that are based on forecasts of future results, estimates of amounts not yet determinable and assumptions of management. All statements other than statements of historical fact may be forward-looking statements. Statements concerning proven and probable mineral reserves and mineral resource estimates may also be deemed to constitute forward-looking statements to the extent that they involve estimates of the mineralization that will be encountered if the property is developed, and in the case of mineral resources or proven and probable mineral reserves, such statements reflect the conclusion based on certain assumptions that the mineral deposit can be economically exploited. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always, using words or phrases such as "seek", "anticipate", "plan", "continue", "estimate", "expect, "forecast", "may", "will", "project", "predict", "potential", "targeting", "intend", "could", "might", "should", "believe", "outlook" and similar expressions) are not statements of historical fact and may be "forward-looking statements". Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking statements. SolarWorld Solicium believes that the expectations reflected in those forward looking statements are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking statements included in this presentation should not be unduly relied upon. SolarWorld Solicium GmbH does not intend, and does not assume any obligation, to update these forward-looking statements. These forward-looking statements involve risks and uncertainties relating to, among other things, results of exploration and development activities, SolarWorld Solicium's historical experience with development-stage mining operations, uninsured risks, regulatory changes, defects in title, availability of materials and equipment, timeliness of government approvals, changes in commodity prices and, particularly, lithium prices, actual operating and financial performance of facilities, equipment and processes relative to specifications and expectations and unanticipated environmental impacts on operations. Actual results may differ materially from those expressed or implied by such forward-looking statements. Unless otherwise indicated, all resource estimates have been prepared in accordance with Pan-European-Standard for Reporting of Exploration Results, Mineral Resources and Reserves (PERC). European standards, including PERC, differ significantly from the requirements of the SEC, and resource information may not be comparable to similar information disclosed by U.S. companies. Cautionary Note to U.S. Investors Concerning Estimates of Measured and Indicated Resources: This presentation uses the terms "measured resources", "indicated resources, and "measured and indicated resources". We advise U.S. investors that while these terms are recognized and required by European regulations, these terms are not defined terms under SEC Industry Guide 7 and are normally not permitted to be used in reports and registration statements filed with the SEC. The SEC normally only permits issuers to report mineralization that does not constitute SEC Industry Guide 7 compliant "reserves" as in-place tonnage and grade without reference to unit measures. U.S. Investors are cautioned not to assume that any part or all of mineral deposits in these categories will ever be converted into SEC Industry Guide 7 reserves. Cautionary Note to U.S. Investors Concerning Estimates of Inferred Resources: This presentation uses the term "inferred resources". We advise U.S. investors that while this term is recognized and required by Canadian regulations, this term is not a defined term under SEC Industry Guide 7 and is normally not permitted to be used in reports and registration statements filed with the SEC. "Inferred resources" have a great amount of uncertainty as to their existence, and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to a higher category. Under European rules, estimates of inferred mineral resources may not form the basis of a feasibility study or prefeasibility study, except in rare cases. The SEC normally only permits issuers to report mineralization that does not constitute SEC Industry Guide 7 compliant "reserves" as in-place tonnage and grade without reference to unit measures. U.S. Investors are cautioned not to assume that any part or all of an inferred resource exists or is economically or legally minable. 2
SolarWorld Zinnwald SolarWolrd-CZ Cinovec-III SolarWorld Exploration Areas Granite (surface contact) Granite (contact @ 750 m a.s.l.) 1 km 1 km 3
Geology and distribution of Sn-W-Li (-Mo)-deposits in the SE part of the Eastern Erzgebirge (Altenberg-Teplice Caldera) (modified after Seifert & Kempe, 1994) 4
Simplified geological map of the Zinnwald/Cínovec deposit (modified from Baumann et al., 2000) 5
Fl Qtz Fl Zwd To To Zwd Zwd Quartz-Mica-Greisen from underground trench sample TBSt 06a; plane Pol. (Qtz=quartz, Zwd=zinnwaldite, To=topaz, Fl=fluorite) TBSt 06a; crossed Pol. 6
Pegmatitic Vein Greisen Picture: Jörg Neßler, August 2011 7
n=288 n=771 n=55 Greisen Greisenized Granite Albite Granite Boxplot of Li-grade from various lithologies (drill core and underground channel samples). Picture: Jörg Neßler, August 2011 8
n=288 n=771 n=55 Greisen Greisen [ppm] Greisenized Granite Hostmineral Albite Granite Median [ppm] Coefficient of Variation Maximum [ppm] Li Zwd 3,750 0.32 8,160 Sn Oxides 139 2.26 10,000 W Oxides 47 2.85 5,520 Cs Zwd 67 0.35 152 Rb Zwd 2,780 0.30 6,160 Sc Misc. 16 0.28 49 Nb Oxides 87 0.30 265 Ta Oxides 35 0.32 105 K 2 O [wt.-%] Zwd 2.55 0.29 6.94 Th Misc. 31 0.43 152 U Misc. 10 0.95 127 As Sulfides 29 1.93 1,405 F [wt.-%] Zwd/To 2.96 0.44 7.67 Picture: Jörg Neßler, August 2011 9
Hole ID Depth from Depth to Thickness [m] mean Li [wt%] ZGLi 02 85.5 113.5 28.0 0.41 ZGLi 04 173.4 179.4 6.0 0.39 ZGLi 05 57.3 66.3 9.0 0.41 ZGLi 05 115.2 127.3 12.1 0.35 ZGLi 06a 214.0 264.0 50.0 0.47 ZGLi 07 238.3 254.7 16.4 0.26 ZGLi 07 349.9 355.6 5.7 0.30 ZGLi 08 121.4 146.6 25.2 0.31 10
Basic geological map with indication of drill hole location 11
Geological 3D model displaying several stacked, sheetlike Li-greisen ore bodies within the uppermost part of the granite cupola, view towards west direction 12
Geological 3D model displaying several stacked, sheetlike Li-greisen ore bodies within the uppermost part of the granite cupola, view towards north-east direction 13
500 kt/y underground mine for 25 years Lithium salt production plant in Germany nominal capacity of 8,500 t/y lithium hydroxide and 15,000 t/y potassium sulfate 27 Mt @ 0.36% Li comprising 96,000 t Li-metal 14
(incl. 4 m @ 0.34 wt% Sn) 15
N S Geological cross section with interpretation of greisen distribution 16
N S Geological cross section with interpretation of potential Sn-ore zone 17
Li-Sn-W-Greisen Potential Sn-W ore zone Basic geological map with indication of drill hole location and greisen distribution 18
The SolarWorld owned Zinnwald Lithium-Project has a PERC compliant measured and indicated resource of 27 million tons ore (Lithium Mica Greisen) @ 0.36 wt% Lithium comprising 96,000 t Lithium-metal (510.000 t LCE) Additionally, there is a considerable upside potential of about 535,000 t Potassium, 5,500 t Tin and Cesium Furthermore, significant potential of Sn-W (Nb-Ta) mineralization was recently discovered The SolarWorld developed a processes to produce high purity (battery grade) Lithium Hydroxide, Lithium Carbonate and Potassium Sulfate Currently in discussions with potential strategic and financial partners in order to secure project financing 19
Contact: SolarWorld Solicium GmbH Prof. Dr. Armin Müller Tel.: + 49 3731 301-4952 armin.mueller@solarworld.com www.solarworld.com 20