Cygni Energy, a city-based Solar-DC solutions startup today said it has raised USD 6.4 million through a combination of equity and debt. According to a press release from Cygni, the equity funding is led by Endiya Partners, and the debt by IndusInd Bank. The funds will help the startup in expanding capacity, strengthening R&D capabilities and increasing market reach, it said. Cygni which manufactures efficient solar controllers raised an initial funding in 2014 and was the first company to be recognised under the 'Startup India' programme.