When the power plant was brought up in the earlier days it use to be of the size of several 100’s of Megawatts, built in remote location and electricity was transmitted over 100’s of miles to the point of consumption. Because the installation runs in 100’s of millions of dollars, if not billions power plant operator can manage a team of experts installing and monitoring the system. These monitoring systems like SCADA can run into half-a million dollar type of cost and man power to manage it. This is still ok if you have large power plant.
With the advent of Solar, individual homeowners can produce power as low as 1KW and sell it to grid or to their neighbors. Even small plant like this one cannot have the luxury of sophisticated monitoring system, until IoT comes into picture. With IoT the entire site operations can be automated. Once the data goes to cloud in IoT framework, Machine Learning and AI algorithms can make the prediction of energy generation, any problem in the site or managing the maintenance schedule autonomous without any human intervention.