The Primary Energy Fallacy

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dan_b
Posts: 2286
Joined: Tue Jun 15, 2021 10:16 am
Location: SW London

The Primary Energy Fallacy

#1

Post by dan_b »

Been following this chap for quite a while, he's quite outspoken on a range of modern day obsessions including Hydrogen as a transport fuel, but this primer from him on the "primary energy fallacy" is well worth a read

https://www.linkedin.com/pulse/primary- ... tin-nty3e/
Tesla Model 3 Performance
Oversees an 11kWp solar array at work
Mart
Posts: 1296
Joined: Mon Jun 14, 2021 1:17 pm

Re: The Primary Energy Fallacy

#2

Post by Mart »

Nice to read, makes things seem a lot easier.

I'm (blindly(?)) confident that issues like transmission networks will be upgraded as needed. Solutions/storage for worst case scenarios are a tougher issue. But providing enough energy is, I believe, the simplest issue.

The UK can easily rollout enough PV, on-shore wind, and off-shore wind to individually generate the equivalent of a years worth of all-electric UK energy demand. There are simply no issues with scaling. But building the right amount in the right places, and transmitting it to where it's needed, when it's needed is far tougher.
8.7kWp PV [2.12kWp SSW + 4.61kWp ESE PV + 2.0kWp WNW PV]
Two BEV's.
Two small A2A heatpumps.
20kWh Battery storage.
Oliver90owner
Posts: 399
Joined: Wed Jun 16, 2021 3:48 pm

Re: The Primary Energy Fallacy

#3

Post by Oliver90owner »

I remember the likely perplexion when students asked about % heat loss from buildings. My reply was always 100%. I then had to explain the differences for the curriculum and the plain honest reality of what happens to all the heating, used in a house, in the winter.

Most only use the heat-loss % as a means to target the individual heat losses without considering that they always add up to a 100% (total loss).

I’m glad that the UK energy use is far better than that world piece chart!

EV haters simply don’t (want to) consider rejected heat energy.
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