SoloPower— a manufacturer of flexible, thin film solar cells and modules— has raised another $43.7 million in an equity round this month, according to a new SEC filing. Investors in the round include: Greentech Capital in New York, and Thomas Weisel Partners in San Francisco. Earlier investors in the company include: Hudson Clean Energy Partners, Crosslink Capital, Convexa, and Firsthand. In February this year, SoloPower locked a $197 million loan guarantee from the U.S. Department of Energy (DOE) Loan Programs Office to build a "facility that, when completed and at full capacity, is expected to produce approximately 400MW of thin film Photovoltaic (PV) modules annually," according to a company press statement.