The article itself differentiates OECD vs Non-OECD. The point is Non-OECD countries are going big on Solar because at the consumer level they have the most to

The article itself differentiates OECD vs Non-OECD. The point is Non-OECD countries are going big on Solar because at the consumer level they have the most to gain. There are parts of India which are not electrified because the electricity distribution is state owned and is always loss making. So there are not that many investments into distribution. Solar really helps with distributed generation as well as is not that location specific. A village can have its own solar farm and does not need the transmission lines from outside etc. Solar + Battery tech will improve lives of millions of people around the world and especially in the Non-OECD countries.