On July 3, 2014, the U.S. Department of Energy (DOE) announced that it is making an additional $4 billion available in loan guarantees for innovative renewable energy and energy efficiency projects located in the U.S. that avoid, reduce, or sequester greenhouse gases. Part one of the solicitation is due October 1, 2014. Copies of the solicitation and fact sheet about the solicitation are available online.
According to DOE's press release on the announcement, "the Department has identified five key technology areas of interest: advanced grid integration and storage; drop-in biofuels; waste-to-energy; enhancement of existing facilities including micro-hydro or hydro updates to existing non-powered dams; and efficiency improvement." A copy of DOE's press release is available online.