Matthew Heun

May 19, 2024 | nature.com | Emmanuel Aramendia |Paul Brockway |Peter Taylor |Jonathan Norman |Matthew Heun

AbstractThe net energy implications of the energy transition have so far been analysed at best at the final energy stage. Here we argue that expanding the analysis to the useful stage is crucial. We estimate fossil fuelsʼ useful-stage energy returns on investment (EROIs) over the period 1971–2020, globally and nationally, and disaggregate EROIs by end use.

Mar 20, 2024 | mdpi.com | João Gonçalves |Joao Santos |Paul Brockway |Matthew Heun

1. IntroductionIn neoclassical economic theory, the primary inputs to production are capital and labour. With the advent of GDP and other economic time series, empirical data showed that capital played a much smaller role in past economic growth than had previously been assumed [1].