EnerG2, a Seattle, Wash. company making advanced materials for fuel and energy storage, has raised an $8.5 million round of funding, according to Xconomy.

Various nanomaterials that the company is working on could prove useful for holding methane, hydrogen and other fuels. Other new materials could also be useful for other alternative energy fields, like solar cells.

Initial work at EnerG2 was funded by state and Federal grants. This funding, the company’s first, was proided by OVP Venture Partners and Firelake Capital Management.