News for hackers. Stuff that matters.

A comment on After rising for 100 years, electricity demand is flat. Parent comment

Re:After rising for 100 years, electricity demand is flat by philipkglass on Tuesday February 27, 2018 @01:18PM (#16476278)
That may be true over some timeframes of comparison, but it doesn't explain 2007 to now, when the Vox chart shows electricity demand plateauing.

Here is Lawrence Livermore National Laboratory's energy flow chart for the United States in 2007:

https://flowcharts.llnl.gov/content/energy/energy_archive/en...

And here's the most recent one, from 2016:

https://flowcharts.llnl.gov/content/assets/images/energy/us/...

Industrial sector primary energy demand barely declined, from 24.84 quads in 2007 to 24.5 in 2016. That's less than the decline from the residential sector, 11.43 to 11.00.

[ Parent | on HN ]
Re:After rising for 100 years, electricity demand is flat by antr on Tuesday February 27, 2018 @02:47PM (#16477159)
"U.S. Electricity Sales", as shown in the graph, is net of any restrictions, generation efficiency, transmission losses, etc.
[ Parent | on HN ]
Re:After rising for 100 years, electricity demand is flat by fludlight on Tuesday February 27, 2018 @01:50PM (#16476581)
What is "rejected energy"?
[ Parent | on HN ]
Re:After rising for 100 years, electricity demand is flat by philipkglass on Tuesday February 27, 2018 @02:07PM (#16476761)
It's energy that is dissipated without providing energy services. For example, electrical transmission line losses and the less-than-100% efficiency of heat engine electrical generators both contribute to rejected energy. Those numbers can't be directly compared between the 2007 and 2016 charts. LLNL changed methodology for reporting them in recent years. The input primary energy numbers can be compared across the whole time frame, though.
[ Parent | on HN ]