Invenergy inks massive HQ expansion: The company is adding around 84,000 square feet to its lease and working on a plan to create a clean energy innovation hub in the tower.

Landlord trouble An Invenergy spokesman said in a statement that the company has added more than 1,300 employees globally over the past five years, and that the company today operates more than 200 clean energy projects across four continents. One of the largest independent clean energy producers in the world is adding about 84,000 square feet to its Wacker Drive headquarters, a rare massive expansion of workspace and a deal that could tee up the creation of a new clean energy innovation hub in downtown Chicago. [Extracted from the article]