clean coal

  • Ciris Energy Raises $23.9 Million To Convert Coal To Natural Gas

    Ciris Energy, Inc., a Centennial, Colorado energy startup, raised a series B investment of $23.9 million a recent SEC-filing revealed. Khosla Ventures led the round with earlier Ciris backers Braemar Energy Ventures, Rho Ventures and GE Energy Financial Services, the companies announced Monday. Ciris Energy aims to produce natural gas from coal in a way that is more environmentally responsible… Read More