Arnergy: Bill Gates-backed Arnergy to expand solar access in Nigeria with $18M as demand surges

Demand for solar energy in power-starved Nigeria has soared in the last decade thanks to worsening grid reliability and rising fuel costs. That's drawn investor interest to Arnergy, a cleantech startup meeting that need. The company just raised a $15 million Series B extension (on top of a $3 million B1 round last year), bringing [...]