Spire Corporation (Nasdaq: SPIR), a diversified global company providing solar photovoltaic ("PV") equipment and systems announced today that it has completed and shipped its 250 th Spi-Sun Simulator TM 4600SLP ("4600SLP"). The 4600SLP provides a light source that closely matches the solar spectrum to measure electrical characteristics and output power ratings of PV modules. The system combines International Standard Class AAA performance with a unique long pulse-width that permits more accurate measurement of thin film and high efficiency crystalline silicon modules. The unit is also available as part of an integrated Module QA Tester, which performs high voltage isolation and ground continuity testing as well. Roger G. Little, Chairman and CEO of Spire Corporation, stated “Sun simulators are among the most critical pieces of equipment in the module manufacturing process. They are used to determine module power, which directly influences a module’s selling price. Therefore, accuracy and reliability of this equipment is paramount to a manufacturer’s success. Spire’s Sun Simulators are considered the gold standard in the PV industry since they offer the highest levels of accuracy and product throughput. The 4600SLP’s versatility has made it a staple for both large-scale module manufacturers and certification laboratories worldwide. Shipment of our 250 th unit is a testament to the industry’s acceptance of our equipment and of Spire as the world leader in PV module performance measurement.” Mr. Little concluded, “We have provided the industry with over 600 simulators since we began offering PV module metrology instruments. We continue to maintain our leadership position with the introduction of our new advanced 5600SLP simulator, and continue to develop our expertise in metrology by offering state-of-the-art equipment.” About Spire Corporation Spire Corporation provides capital equipment for the manufacture of PV modules. For further details on the Company and its products, please visit www.spirecorp.com. Certain matters described in this press release may be forward-looking statements subject to risks and uncertainties that could cause actual results to differ materially from those indicated in the forward-looking statements. Such risks and uncertainties include, but are not limited to, the risk of dependence on market growth, competition and dependence on government agencies and other third parties for funding contract research and services, as well as other factors described in the Company's Form 10-K and other periodic reports filed with the Securities and Exchange Commission.