Ryse Energy, a provider of decentralized renewable energy systems, has raised a $15 million growth funding round led by RWE Energy Transition Investments, an investment vehicle of RWE Supply & Trading, the energy trading arm of the global renewable energy company RWE. The investment will enable Ryse Energy to accelerate its international growth and enter other markets, expand its technology offerings, and continue to diversify its business model into energy-as-a-service.