Noah Smith’s classic definition of “derp” as “the constant repetition of strong priors” was developed with particular reference to solar energy, to refer to people who’ve taken the view, at some point in the past, that solar energy can’t work, and who are neither willing to change their minds, whatever the evidence, nor to state their views once and for all and remain silent thereafter.
The classic illustration of this would have to be Ted Trainer of the University of New South Wales. For the past 20 years, he’s been writing and rewriting the same paper, showing that renewables can’t possibly sustain a consumer society. Here’s a version from 1995, and from 2003, and here’s the latest.
What’s striking is that, while the numbers change dramatically, the conclusions don’t. The 1995 report says, in essence, that solar PV is totally unaffordable for all practical purposes.  So, our only hope is to embrace a massively simpler lifestyle,
The most recent version, written at a time when cheap solar power is a reality, has much less scary numbers. He estimates that the capital investment required for decarbonization of the economy would amount to 11 per cent of GDP. That’s still an over-estimate but it’s in the right ballpark. Trainer rightly observes that this number far exceeds current investment levels and is unlikely to be attained. But, unlikely as it may be, it would certainly be chosen if people accepted Turner’s conclusion that the only alternative was to live in huts with peat roofs.
And, over time, the insistence on negativity about renewables has led Trainer to promote views that are the opposite of his original concerns about simplicity For quite a few years, his work was published primarily at pro-nuclear site, Brave New Climate.
If Ted Trainer actually wants to help save the planet it’s time for him to abandon the campaign against renewables and urge society to accept the relative modest reduction in the rate of growth of income needed to decarbonize energy supply. Once the prospect of massive extinction has been staved off, we will have plenty of tiem to think about a simpler lifestyle.
fn1. As an illustration, the cost of a system to charge an electric car is estimated at $350 000, an estimate that is supposed to take account of optimistic projections of efficiency gains. These systems haven’t quite arrived yet (as usual, there are a bunch of technical difficulties to be overcome) but it appears they will soon be on the market for less than $10000. These systems have an obvious potential to resolve the problem of mismatch between peak PV availability at midday and peak demand in the evening, and may therefore reduce the conflict associated with the idea of a “utility death spiral”/
fn2. BNC ran into the same problem. In his eagerness to push the idea that nuclear power is the only way to save the planet from global warming, Barry Brook ran slabs of anti-renewable nonsense from climate delusionists such as Peter Lang.