Emily Cunningham

becoming competitive economically, they are becoming competitive (and ever more so) on a pure physical energy efficiency basis. The days of fossil dominance are physically numbered by this calculus.

The second major implication is that "... we may already have entered this zone of highly nonlinear change, where further modest declines in EROI_FIN ratios lead to increasingly rapid reductions in the net energy available to society."

This means that fossil fuel reliance is risky: it could lead to an energy restricted or insecure future given current EROI trends. The third implication of the paper is that our socioeconomic energy models and policy responses have not taken these trends into account sufficiently

(or at all). The authors recommend a focus on rapid renewable deployment, and a policy and modelling focus on satisfying energy service demand at lower final energy levels. This advice should be taken seriously by researchers and policy-makers, but it's hard without media echo.

At the end of this too long thread, I'll try and introduce the @SRILeeds EROI #Squad. First up, Dr Paul Brockway, @exergy_paul. He's very tall, very very smart, super keen, runs, cycles, eats tons of sandwiches, is also lovely and nice. https://environment.leeds.ac.uk/see/staff/1177/dr-paul-brockway …

The astounding Dr Lina Brand Correa @librand3. Lina is a researcher of all trades: she can do super complicated quantitative work (like this paper) and pioneer super innovative qualitative and conceptual research on human needs and energy services. Wow. https://environment.leeds.ac.uk/see/staff/1648/dr-lina-brand-correa …