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Tom Brown
@nworbmot
, 4 tweets, 5 min read Read on Twitter
Save the date:

1st North American Open Energy Modelling Initiative Workshop

September 18-19, 2019

@NREL, Golden, Colorado

Come and help free the energy models!

#FreeTheModels

@openmod
Details about registration, programme, hotels, etc, will be updated periodically here:

wiki.openmod-initiative.org/wiki/Open_Ener…

Questions and discussion here:

forum.openmod-initiative.org/t/north-americ…
@claytonpbarrows @CJCoffrin @JesseJenkins @gschivley @jfdecarolis @KenCaldeira @MatthiasFripp @kamal_kapadia @cbdvs @E_Buechler @jacob_mays @ZaneSelvans @CatalystCoop

sorry if I forgot someone from this hastily-selected list...
Never heard of open energy modelling? Check out the FAQ here:

forum.openmod-initiative.org/t/openmod-faq-…
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More from @nworbmot see all

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Tom Brown
@nworbmot
Who came up with the first coherent plan to use renewables to cover all our energy needs?

My money is on Bent Sørensen, who wrote these two ground-breaking papers in the 1970s:

doi.org/10.1126/scienc… (1975)

doi.org/10.1016/0038-0… (1978)

He deserves more credit.

Thread.
By "coherent" I mean that it covers all energy sectors (electricity, heating, transport, industry) and it's technically, economically and socially viable. In particular, it considers the short- and long-term balancing needed to deal with the variability of wind and solar.
The first paper looks at the big picture for Denmark: what are the feasible energy potentials?

Hydro and geothermal are limited, so it focuses instead on wind and solar.

His 1975 plan to use "continuous" (i.e. versus finite fossil) energy sources tackles the four major sectors:
Read 21 tweets
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Tom Brown
@nworbmot
Ever wanted to run your own energy system model with your own assumptions?

Now you can!

A new, open online tool for computing least-cost wind+solar+storage systems to meet baseload electricity demand:

whobs.org
Just choose your location (European countries at the mo, will extend worldwide shortly), which assets you want (wind/solar/batteries/power-to-gas), cost assumptions, then press the big red "Solve" button, wait 30 seconds and voila!
Fun things to do:

i) Remove long-term hydrogen gas storage and see system costs rise!

In most locations solar+wind+batteries alone won't be affordable. You need longer-term storage or other dispatchable low-carbon generation for multi-day lulls.
Read 12 tweets
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Tom Brown
@nworbmot
Can we meet baseload electricity demand from wind, solar and storage alone?

Thread summary: Yes. Today it's a bit expensive, in a decade it will be reasonable. Costs even lower if we use other low-carbon sources too (existing hydro, sustainable biomass, nuclear, CCS, etc.)
In this thread we demonstrate this claim with an open model that anyone can download and play with, see http://github/PyPSA/WHOBS. It's based on the free software modelling framework github.com/PyPSA/PyPSA and open weather data from renewables.ninja. @openmod
We concentrate on European countries. We optimise over 31 years of hourly historical data to get a wide selection of weather events. We only allow onshore wind, utility-scale solar PV, batteries and hydrogen (H2) storage. They have to meet a flat demand profile (i.e. baseload)
Read 28 tweets

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Nicholas Mulder
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This by @TroyVettese in @BostonReview is a stellar analysis of the IPCC report on 1.5°C global warming, bringing out its subtle radicalism through the lenses of classical political economy, land use, planning, and the German war economy in 1914-1918: bit.ly/2UZxbsW
More historical analogies for how to deal with climate stress and energy scarcity are to be found in Jörg Friedrichs' book "The Future Is Not What It Used to Be"; interwar Japan, and North Korea and Cuba in the 1990s: bit.ly/2ULu1nF
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🔻 JUSTIN TRUDEAU 🔻
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Millennial Macro
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#demographics #militaries #economies #currencies
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Bring the manufacturing (jobs) home while negatively impacting China's economy.
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