Thanks for your comments. I'm not sure if you've ever actually visited an off grid solar installation, but if you had you would see first hand the impact these technologies have on people's lives. From increasing productivity for those selling goods by the streetside (by increasing the hours they are open) to providing light for children to study, to keeping people's phones charged this first generation of solar interventions are improving people's lives today. To disparage that means you've probably never seen it. I highly encourage you to do so.
The point around scale is a good one, and often misunderstood. These are not meant to be the end solution, they are the beginning. These interventions get people on an energy ladder that increases the services provided as they go. That's why solar is so appropriate - it's modular, can be added in increments that are appropriate to cash flow.
Remember, we can't let the perfect be the enemy of the good. People have waited decades for grid extension. It's never come, and it won't if we keep believing in top down, trickle down, centralized solutions. The most impactful thing we can do is get power in the hands of people on a time frame that matters - now. Once we've done that we are beginning to build an entirely different power system, from the bottom up.