“In the year 2000, the International Energy Agency (IEA) made a prediction that would come back to haunt it: by 2020, the world would have installed a grand total of 18 gigawatts of photovoltaic solar capacity.”
The world installed that much in a single year by 2007. The IEA kept underestimating solar and overestimating coal and oil for two decades. Governments planned their grids off those forecasts. When the official models are this wrong for this long, ask who they were built to comfort.