Some people want us to believe there's not enough solar energy available to cover our worldwide energy needs

They often use EROI (Energy Return On Investment) as their metric

This is a rant against these EROI people misinforming the debate, based on a rebuttal of a 2020 paper

In essence the approach of the paper is straightforward:

1) Discard water and 96% of land because it's supposedly unavailable

2) Assume solar cells on just 1/5th of the remaining 4%

3) Complain that production of solar panels takes a lot of energy
https://t.co/tQUHLEHFnw
About 1) (available land)

Discarding 96% of land seems pretty extreme:
30% of the world's land is barren
40% of the world's land is used for meat

I think we could find more than 4% if we tried
(but we don't have to: we need less than 1%)
https://t.co/rJZiNWcu7F
About 2) (using 1/5th of available land)

If cells are expensive and land is dirt cheap, covering 20% with solar cells is logical

But with cheap cells you maximize land use: 80% is easily possible

New paper headline:
"Global available solar energy over 10 times what we need"
About 3) (20% of energy is needed for production)

This is something @MLiebreich and I often complain about:
If you get more energy out than you put it, that's FINE
If you get five times more energy out, that's GREAT

EROI is a USELESS metric. Let's STOP using it. At all.
I think the energy production numbers are very conservative (predicting 2030 and beyond based on 2013 Chinese production numbers?? - no learning curves??) but I won't go into that because EROI is a USELESS metric
I think that use of EROI stems from the misconception (still held by many) that the second law of thermodynamics implies that have limited energy here on earth

What they forget is that the massive influx of solar energy invalidates that argument
https://t.co/wiM76rNq2b
Of course there are other constraints. Like costs (but solar is cheap) and raw materials

Most sensible people have heard about planetary constraints. And of @KateRaworth and Doughnut Economics

So let's use THOSE and STOP using EROI
Because it's a USELESS metric
The EROI paper also suggest that it might be a good idea to add wind to the mix and to do more research into storage needed on an hourly basis. You think??

People like @mzjacobson, @ChristianOnRE, @nworbmot (and me: https://t.co/9A5qlC8nIS) have been doing that for ages
WAKE UP!
Anyhow, let's take heart from knowing that even EROI pessimists cannot make solar energy a limited resource

So let's get to work because there are many problems to be solved. But let's stop polluting the debate with irrelevant metrics conceived based on a misconception

Imho/end

More from Economy

What do a Tory Peer, Selwyn Gummer (Lord Chadlington), David Sumner ( Sumner Group Holdings) and the Sanchez Perez family (drugs money, laundered through Gold mines) have in common?

It’s another company-saving a £50 million PPE contract shaggy dog story

Connections, connections


What a start to the story

“A bulletproof truck trundled down the road in downtown Lima, guarded by 18 policeman
They were wearing body armour & wielding high velocity rifles

No-one was taking any chances
This was a Special delivery for Peruvian Prosecutor for an anti drug trial


That was in 2011, the same year that Lord Chadlington’s daughter got married in Chadlington to Henry Allsopp.

Who was there?
Yes Kirstie Allsopp of Location, location, location and all this Covid nonsense fame) is his sister

Camilla, his Godmother

Jeremy Hunt

Cameron


Well. Come on. Lord Chadlington had been chair of the local Witney Conservative Association. It’s only fair.

Hang on. Julian Wheatland, Director of SCL Group/ Cambridge Analytica had also been chair of Witney Conservative Association...and campaigned for his mate Cameron

Are we sure Julian Wheatland and his side kick Alexander Nix were not there too @JolyonMaugham ?

I mean. They move in the same North Oxford circles.

You May Also Like