The rigour of the Jacobson et al. RE plan

Completely decarbonising energy systems is a difficult and complex problem. Wind and solar have the benefit of modularity, falling costs, and scalability. They are contributing to lowering the emission intensity of legacy electricity systems. But at high penetration, intermittency will be a major challenge. Although there are potentially many long-term low-carbon options, the only other …

The competitive struggle between technology and resource depletion

The study of EROI may be of little more than academic interest except for two factors. Energy extraction has conformed to Ricardo’s ‘best first’ principle, meaning that the easiest resources to extract tend to be the first. But at the same time, human ingenuity continually pushes the technological frontier forward. Hence, there is a competitive …