Yingli Green Energy, a Chinese vertically integrated photovoltaic product manufacturer, has entered into a new long-term polysilicon supply agreement with German company Wacker Chemie AG.

ET Solar Group, a Nanjing-based solar power solution provider and integrated manufacturer of photovoltaic products including ingots, wafers, modules, and state-of-the-art dual-axis tracking systems, with manufacturing facilities located in Taizhou, China, has announced a 15MW module sales contract with Helios Technology, an Italian manufacturer of photovoltaic cells, photovoltaic modules, inverters and charge regulators.

In their Energy Rating Comparison Measurement tests in 2008 TUV has rated Chinese manufacturer Trina Solar in the top three manufacturers of monocrystalline photovoltaic modules.

Spire Corporation, a global solar company providing turnkey solar factories and capital equipment to manufacture photovoltaic modules worldwide, has announced that it has entered into a multi-year, multi-system contract to provide key module line equipment to Trina Solar Limited in China.

Evolution Solar Corp. has acquired Synergy Design and Development Company Limited, a Hong Kong R&D and procurement company based in Shanghai.

Trina Solar Limited, has announced a cooperation agreement with LISA Airplanes for the building of the Hy-Bird, a solar and hydrogen powered airplane that is set to be the first to fly around the world using only renewable energy as fuel.