$280 - $580 per kWh (installed cost), though of course this will vary from region to region depending on economic levels. For large containerized systems (e., 100 kWh or more), the cost can drop to $180 - $300 per kWh.
Cambridge University has been tasked with developing ultra-lightweight solar panels that can survive in the high-radiation environment of space, while Queen Mary, University of London, will research the wireless transmission technology needed to beam the power to the ground.
Digicel, which is the leading mobile operator in Vanuatu, now carries more than 60% of its network traffic on base stations powered by renewable energy sources.