Solar hyberbole is decades old. Inevitably, every few months there are fresh headlines about significant cost reductions, insinuating that the competitive moment of solar panels is arriving. In a recent post at Climate Progress, for example, Joe Romm reports: “Solar prices set to fall by up to 40 per cent by year end.” Google “solar” and “advances” to see what you get for previous years and even decades!
But fossil-fuel technologies have advanced too, and the competitive gap between solar and hydrocarbons for generating electricity remains huge. DOE Secretary Stephen Chu told the New York Times recently that solar technology will have to get five times better than it is today to be part of the energy transformation that he and other alarmists think is necessary.
Why is “free” energy from the sun so expensive?…