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[M] Redefining personal energy security

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Posted by RS Wood on March 25, 2019, 3:34 am
 
From the «no faith in the system» department:
Title: Keeping Some of the Lights On: Redefining Energy Security
Author: kris de decker
Date: Sun, 09 Dec 2018 14:10:44 -0500
Link: http://feedproxy.google.com/~r/typepad/krisdedecker/lowtechmagazineenglish/~3/VwEEFsf6uc0/keeping-some-of-the-lights-on-redefining-energy-security.html  

As a society depends more on energy sources for its daily functioning, it
becomes more vulnerable if the supply of energy is interrupted. This obvious
fact is ignored in current strategies to achieve energy security, making them
counter-productive.

[image 2: Energy-security][2]
Image: Camilla MP[3]. 

What is Energy Security?

What does it mean for a society to have “energy security”? Although there are
more than forty different definitions of the concept, they all share the
fundamental idea that energy supply should always meet energy demand. This also
implies that energy supply needs to be constant – there can be no interruptions
in the service. [1-4] For example, the International Energy Agency (IEA)
defines energy security as “the uninterrupted availability of energy sources at
an affordable price”, the US Department of Energy and Climate Change (DECC)
defines the concept as meaning that “the risks of interruption to energy supply
are low”, and the EU defines it as a “stable and abundant supply of energy”. [5
-7]

Historically, energy security was achieved by securing access to forests or
peat bogs[4] for thermal energy, and to human, animal, wind or water power
sources for mechanical energy. With the arrival of the Industrial Revolution,
energy security came to depend on the supply of fossil fuels. As a theoretical
concept, energy security is most closely related to the oil crises from the
1970s, when embargoes and price manipulations limited oil supply to Western
nations. As a result, most industrialised societies still stockpile oil
reserves that are equivalent to several months of consumption.

Although oil remains as vital to industrial economies as it was in the 1970s,
mainly for transportation and agriculture, it’s now recognised that energy
security in modern societies also depends on other infrastructures, such as
those supplying gas, electricity, and even data. Furthermore, these
infrastructures increasingly interconnect and depend on each other. For
example, gas is an important fuel for power production, while the power grid is
now required to operate gas pipelines. Power grids are needed to run data
networks, and data networks are now needed to run power grids.

Power grids are needed to run data networks, and data networks are needed to
operate power grids.

This article investigates the concept of energy security by focusing on the
power grid, which has become just as vital to industrial societies as oil.
Moreover, electrification is seen as a way to decrease dependency on fossil
fuels – think electric vehicles, heat pumps, and wind turbines. The “security”
or “reliability” of a power grid can be measured precisely by indicators of
continuity such as the “Loss-of-Load Probability” (LOLP), and the “System
Average Interruption Duration Index” (SAIDI). Using these indicators, one can
only conclude that power grids in industrial societies are very secure.

For example, in Germany, power is available for 99.996% of the time, which
corresponds to an interruption in service of less than half an hour per
customer per year. [8] Even the worst performing countries in Europe (Latvia,
Poland, Lithuania) have supply shortages of only eight hours per customer per
year, which corresponds to a reliability of 99.90%. [8] The US power grid is in
between these values, with supply interruptions of less than four hours per
customer per year (99.96% reliability). [9]

How Secure is a Renewable Power Grid?

In the current operation of infrastructures, the paradigm is that consumers
could and should have access to as much electricity, gas, oil, data or water as
they want, anytime they want it, for as long as they want it. The only
requirement is that they pay the bill. Looking at the power sector, this vision
of energy security is quite problematic, for several reasons. First of all,
most energy sources from which electricity is made are finite – and maintaining
a steady supply of something that’s finite is of course impossible. In the long
run, the strategy to maintain energy security is certainly doomed to fail. In
the shorter term, it may disrupt the climate and provoke armed conflicts.

The International Energy Agency (IEA), which was set up following the first oil
crisis in the early 1970s, encourages the use of renewable energy sources in
order to diversify the energy supply and improve energy security in the long
term. A renewable power system is not dependent on foreign energy imports nor
vulnerable to fuel price manipulations – which are the main worries in an
energy infrastructure that is largely based on fossil fuels. Of course, solar
panels and wind turbines have limited lifetimes and need to be manufactured,
which also requires resources that could come from abroad or which can become
depleted. But, once they are installed, renewable power systems are “secure” in
a way and for a period of time that fossil fuels (and atomic energy) are not.

Renewable energy sources pose fundamental challenges to the current
understanding of energy security

Furthermore, solar and wind power provide more security concerning physical
failure or sabotage, even more so when renewable power production is
decentralised. Renewable power plants also have lower CO2-emissions, and the
extreme weather events caused by climate change are a risk to energy security
as well.

However, in spite of all these advantages, renewable energy sources pose
fundamental challenges to the current understanding of energy security. Most
importantly, the renewable energy sources with the largest potential – sun and
wind – are only intermittently available, depending on the weather and the
seasons. This means that solar and wind power don’t match the criterium that
all definitions of energy security consider to be essential: the need for an
uninterrupted, unlimited supply of power.

[image 6: 3750034085_e9a258e408_z][6]

Image: Michael Lokner[7]. 

The reliability of a power grid with a high share of solar and wind power would
be significantly below today’s standards for continuity of service. [10-14] In
such a renewable power grid, a 24/7 power supply can only be maintained at very
high costs, because it requires an extensive infrastructure for energy storage,
power transmission, and excess generation capacity. This additional
infrastructure risks making a renewable power grid unsustainable, because above
a certain threshold, the fossil fuel energy used for building, installing and
maintaining this infrastructure becomes higher than the fossil fuel energy
saved by the solar panels and the wind turbines.

Renewable energy sources like wind and sun have advantages that current
definitions of energy security don’t capture

Intermittency is not the only disadvantage of renewable energy sources.
Although many media and environmental organisations have painted a picture of
solar and wind power as abundant sources of energy (“The sun delivers more
energy to Earth in an hour than the world consumes in a year”), reality is more
complex. The “raw” supply of solar (and wind) energy is enormous indeed.
However, because of their very low power density, to convert this energy supply
into a useful form solar panels and wind turbines require magnitudes of order
more space and materials compared to thermal power plants – even if the mining
and distribution of fuels is included. [15] Therefore, a renewable power grid
cannot guarantee that consumers have access to as much electricity as they
want, even if the weather conditions are optimal.

How Secure is an Off-the-Grid Power System?

Today’s energy policies related to electricity try to reconcile three aims: an
uninterrupted and limitless supply of power, affordability of electricity
prices, and environmental sustainability. A power grid that is mainly based on
fossil fuels and atomic energy cannot achieve the aim of environmental
sustainability, and it can only achieve the other goals as long as foreign
suppliers do not cut off supplies or raise energy prices (or as long as
national or international reserves are not depleted).

However, a renewable power grid cannot reconcile these three goals either. To
achieve an unlimited 24/7 supply of power, the infrastructure needs to be
oversized, which makes it expensive and unsustainable. Without that
infrastructure, a renewable power grid could be affordable and sustainable, but
it could never offer an unlimited 24/7 supply of power. Consequently, if we
want a power infrastructure that is affordable and sustainable, we need to
redefine the concept of energy security – and question the criterium of an
unlimited and uninterrupted power supply.

If we look beyond the typical large-scale central infrastructures in industrial
societies, it becomes clear that not all provisioning systems offer a limitless
supply of resources. Off-the-grid microgeneration – the local production and
storage of electricity using batteries and solar PV panels or wind turbines –
is one example. In principle, off-the-grid systems can be sized in such a way
that they are “always on”. This can be done by following the “worst-month
method”, which oversizes generation and storage capacity so that supply can
meet demand even during the shortest and darkest days of the year.

Matching supply to demand at all times makes an off-the-grid system very
costly and unsustainable, especially in high seasonality climates

However, just like in an imaginary large-scale renewable power grid, matching
supply to demand at all times makes an off-the-grid system very costly and
unsustainable, especially in high seasonality climates. [16-18] Therefore, most
off-the-grid systems are sized according to a method that aims for a compromise
between reliability, economic cost and sustainability. The “loss-of-load
probability sizing method” specifies a number of days per year that supply does
not match demand. [19-21] In other words, the system is sized, not only
according to a projected energy demand, but also according to the available
budget and/or the available space.

[image 9: Solar-panel-in-snow][9]

Off-the-grid. Image: Stephen Yang / The Solutions Project[10].

Sizing an off-the-grid power system in this way generates significant cost
reductions, even if “reliability” is reduced just a little bit. For example, a
calculation for an off-the-grid house in Spain shows that decreasing the
reliability from 99.75% to 99.00% produces a 60% cost reduction, with similar
benefits for sustainability. Supply would be interrupted for 87.6 hours per
year, compared to 22 hours in the higher reliability system. [16]

According to the current understanding of energy security, off-the-grid power
systems that are sized in this way are a failure: energy supply doesn’t always
meet energy demand. However, off-gridders don’t seem to complain about a lack
of energy security, on the contrary. There’s a simple reason for this: they
adapt their energy demand to a limited and intermittent power supply.

In their 2015 book Off-the-Grid: Re-Assembling Domestic Life[11], Phillip
Vannini and Jonathan Taggart document their travels across Canada to interview
about 100 off-the-grid households. [22] Among their most important observations
is that voluntary off-gridders use less electricity overall and routinely adapt
their energy demand to the weather and the seasons.

Voluntary off-gridders use less electricity overall and routinely adapt their
energy demand to the weather and the seasons.

For example, washing machines, vacuum cleaners, power tools, toasters or
videogame consoles are not used at all, or they are only used during periods of
abundant energy, when batteries can accommodate no further charge. If the sky
is overcast, off-gridders act differently to draw less power and have some more
left over for the day after. Vannini and Taggart also observe that voluntary
off-gridders seem to feel perfectly happy with levels of lighting or heating
that are different from the standards that many in the western world have come
to expect. Often, this shows itself in concentrating activities around more
localised sources of heat and light. [22]

Similar observations can be made in places where people – involuntarily –
depend on infrastructures that are not always on. If centralised water,
electricity and data networks are present in less industrialised countries,
they are often characterised by regular and irregular interruptions in the
supply. [23-25] However, in spite of the very low reliability of these
infrastructures – according to common indicators of continuity – life goes on.
Daily household routines are shaped around disruptions of supply systems, which
are viewed as normal and a largely accepted part of life. For example, if
electricity, water or Internet are only available during certain times of the
day, household tasks or other activities are planned accordingly. People also
use less energy overall: the infrastructure simply doesn’t allow for a
resource-intensive lifestyle. [23]

More Reliable, Less Secure?

The very high “reliability” of power grids in industrial societies is justified
by calculating the “value of lost load” (VOLL), which compares the financial
loss due to power shortages to the extra investment costs to avoid these
shortages. [1][10] [26-29] However, the value of lost load is highly dependent
on how society is organised. The more it depends on electricity, the higher the
financial losses due to power shortages will be.

Current definitions of energy security consider supply and demand to be
unrelated, and focus almost entirely on securing energy supply. However,
alternative forms of power infrastructures like those described above show that
people adapt and match their expectations to a power supply that is limited and
not always on. In other words, energy security can be improved, not just by
increasing reliability, but also by reducing dependency on energy.

[image 13: Energy-storage][13]

Natural gas storage terminal. Image: Jason Woodhead[14].

Demand and supply are also interlinked, and mutually influence each other, in
24/7 power systems – but with the opposite effect. Just like “unreliable”
off-the-grid power infrastructures foster lifestyles that are less dependent on
electricity, “reliable” infrastructures foster lifestyles that are increasingly
dependent on electricity.

Industrial societies with “reliable” power grids are in fact the weakest and
most fragile in the face of supply interruptions

In their 2018 book Infrastructures and Practices: the Dynamics of Demand in
Networked Societies[15], Olivier Coutard and Elizabeth Shove argue that an
unlimited and uninterrupted power supply has enabled people in industrial
societies to adopt a multitude of power dependent technologies – such as
washing machines, air conditioners, refrigerators, automatic doors, or 24/7
mobile internet access – which become “normal” and central to everyday life. At
the same time, alternative ways of doing things – such as washing clothes by
hand, storing food without electricity, keeping cool without air-conditioning,
or navigating and communicating without mobile phones – have withered away, or
are withering away. [30]

As a result, energy security is in fact higher in off-the-grid power systems
and “unreliable” central power infrastructures, while industrial societies are
the weakest and most fragile in the face of supply interruptions. What is
generally assumed to be a proof of energy security – an unlimited and
uninterrupted power supply – is actually making industrial societies ever more
vulnerable to supply interruptions: people increasingly lack the skills and the
technology to function without a continuous power supply.

Redefining Energy Security

To arrive to a more accurate definition of energy security requires the concept
to be defined, not in terms of commodities like kilowatt-hours of electricity,
but in terms of energy services, social practices, or basic needs. [1] People
don’t need electricity in itself. What they need, is to store food, wash
clothes, open and close doors, communicate with each other, move from one place
to another, see in the dark, and so on. All these things can be achieved either
with or without electricity, and in the first case, with more or less
electricity.

Defined in this way, energy security is not just about securing the supply of
electricity, but also about improving the resilience of the society, so that it
becomes less dependent on a continuous supply of power. This includes the
resilience of people (do they have the skills to do things without
electricity?), the resilience of devices and technological systems (can they
handle an intermittent power supply?), and the resilience of institutions (is
it legal to operate a power grid that is not always on?). Depending on the
resilience of the society, a disruption of the power supply may or may not lead
to a disruption of energy services or social practices.

For example, although our food distribution system is dependent on a cold chain
that requires a continuous power supply, there are many alternatives. We could
adapt refrigerators to an irregular power supply by insulating them much
better, we could reintroduce cold cellars (which keep food fresh without
electricity), or we could relearn older methods of food storage, like
fermentation. We could also improve people’s skills in terms of fresh cooking,
switch to diets based on ingredients that don’t need cold storage, and
encourage local daily shopping over weekly trips to large supermarkets.

To improve energy security, we need to make infrastructures less reliable.

If we look at energy security in a more holistic way, taking into account both
supply and demand, it quickly becomes clear that energy security in industrial
societies continues to deteriorate. We keep delegating more and more tasks to
machines, computers and large-scale infrastructures, thus increasing our
dependency on electricity. Furthermore, the Internet is becoming just as
essential as the power grid, and trends like cloud computing, the Internet of
Things, and self-driving cars are all based on several interconnected layers of
continuously operating infrastructures.

[image 17: Abandoned-power-line][17]

Abandoned power line. Image: Miura Paulison[18]. 

Because demand and supply influence each other, we come to a counter-intuitive
conclusion: to improve energy security, we need to make the power grid less
reliable. This would encourage resilience and substitution, and thus make
industrial societies less vulnerable to supply interruptions. Coutard and Shove
argue that “it would make sense to pay more attention to opportunities for
innovation that are opened when large network systems are weakened and
abandoned, or when they become less reliable”. They add that the experiences of
voluntary off-gridders “provide some insights into the types of configuration
at stake”. [30]

Arguing for a less reliable power supply is sure to be controversial. In fact,
“Keeping the lights on” is a phrase that is often used to justify energy
reforms such as building more atomic plants, or keeping them in operation past
their planned lifetimes. To achieve real energy security, “keeping the lights
on” should be replaced by phrases like “keeping some of the lights on”, “which
lights should we turn off next?”, or “what’s wrong with a bit more dark?”. [31]
Obviously, a less reliable energy supply would bring fundamental changes to
routines and technologies[19], whether it is in households, factories,
transport systems, or communications networks[20] – but that’s exactly the
point. Present ways of life in industrial societies are simply not sustainable.

Kris De Decker. This article was originally written for the UK Demand Centre[21]
.
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[image 23][23][image 25][25][image 27][27][image 29][29][image 31][31][image 33][33]

Links:
[1]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad3c5bb37200b-pi  (link)
[2]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad3a6770c200d-pi  (image)
[3]: https://www.flickr.com/photos/dieknochenblume/8454004839/in/photolist-nJrNa3-z9St6d-vicpX8-bjNYMa-CNWajb-PKUbFu-8TqWZX-qzaoch-r3Gb3J-28jYUV3-p3gMD1-snwVj-2chyArN-4ehCVH-cWuLz-dT3Z78-pnFKK9-5qGDSP-hxU2d7-24uoKVs-f7CoCe-93ZqZQ-jPMVaK-T4yoN-4HiX59-97Kq68-23hFdSw-jE59uD-9aFpr7-68DbEo-NvymKZ-335BtT-8RtT65-a6Jut4-nt2zNy-qrkSGP-HPM9ee-bcdyA2-5Fy731-FGSpvq-eqKSpH-8jGFmq-qcFSw4-6USSog-dJEYby-jk3JQ2-7BMzWV-jetX2F-hLnHJy-5SHzAW  (link)
[4]: https://www.lowtechmagazine.com/2011/09/peat-and-coal-fossil-fuels-in-pre-industrial-times.html  (link)
[5]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad37fc55d200c-pi  (link)
[6]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad3805404200c-pi  (image)
[7]: https://www.flickr.com/photos/lokner/3750034085/in/photolist-6HnUu6-UhuiFu-25J2o-igXEMC-2NwrTS-fXr6rA-YfRhKA-6qU1zz-9Cpo2C-6Fbr3L-6P1Rae-ed7Hj8-7gsMfc-diuZY5-gkC3N4-e3Xwk1-sWZpT5-6tiPCK-6wpih6-pdRkHA-qeFn6G-pdRkSd-2V8zak-eke5Dr-6S5NU2-e7Jz2R-562YcE-qyp6Ek-h7ogQ-4Dm76-8rt4ig-69Zbf-8TBtPg-fmV6qG-oEUDfL-7jWzuM-74rY1u-F1Wgc-qXAYtt-dgBWFz-69ELJp-4GMjoN-4su6c9-ij8LF-3KgC3T-54TTaU-WnBnjk-2Dqxi1-8AZEdF-4SFUiH  (link)
[8]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad3a60895200d-pi  (link)
[9]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad3a60895200d-500wi  (image)
[10]: https://www.flickr.com/photos/149368236@N06/33068752693/in/photolist-Sob15v-bBnpyx-keyKG-cuaVX3-nuP1zk-U2eVh7-cuaWEf-pskKMf-cuaswE-p27cJW-cu9SQu-cuaMky-mCLFCt-ajiCfB-4AFrsp-943usV-TyoqrN-pu9HK-erKVcJ-aYHgDT-7zrUXc-tQv77b-6xot6g-baF4gg-Xjymka-qHgAkg-ii2jys-9eD7tj-9fJDFi-Ge2Mn-guUowg-amvdKB-cvDZ15-79wfLn-c6XjSS-ddFjjF-9KYuQV-8Zp8z6-guV3wK-9P1nHp-q5c2cz-9RCRVu-cD8w4d-9YDNzC-7ehy1e-4obYkG-8tkNMS-cvDZru-4obYtN-23Aqhr  (link)
[11]: http://lifeoffgrid.ca/off-grid-living-the-book/  (link)
[12]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad3c5bf60200b-pi  (link)
[13]: https://krisdedecker.typepad.com/.a/6a00e0099229e88833022ad3c5bf60200b-500wi  (image)
[14]: https://www.flickr.com/photos/woodhead/7150825737/in/photolist-bTTRmV-85JomL-jysSQn-fw7gTZ-5Jkm2T-eDueWy-ohYc4x-fFxZCm-eD8VG8-eDfhqy-8pCnxZ-qPTdqx-22WNtVf-fFybmb-fFxRVG-fFyhCf-mGNU1p-24mDPG2-8efS2s-fFguSX-nN4pMi-fFgpjT-6br69i-hVGdgU-9DSQQ5-cDwVt-EqVP-dp7vJX-fwmwQh-oHAfHH-fFy6QS-fFgvS8-aaCofJ-fFxW5L-agEkAL-eDfonE-fFgrrn-eD9m9a-PLLffy-fFggcX-fFgka6-nRdzs-fFgwFH-88JrU8-nN4epz-2atchc9-nN523B-24mDNL4-2atciAb-GFzRM  (link)
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[32]: http://feeds.feedburner.com/~ff/typepad/krisdedecker/lowtechmagazineenglish?a=VwEEFsf6uc0:mkEcw4pQLRg:qj6IDK7rITs  (link)
[33]: http://feeds.feedburner.com/~ff/typepad/krisdedecker/lowtechmagazineenglish?d=qj6IDK7rITs  (image)

Posted by ads on March 25, 2019, 5:27 am
 
wrote:


Long term energy security probably comes down to individual action -
having your own space with appropriate renewable energy source(s).

Depending on your location, electricity would be solar PV, wind
generator or hydro generator and adeqaute replacement/repair parts for
your lifetime.

Heat/cooking would be wood, peat or similar - basically stored
sunlight.

Personal energy might also include the food that enrgizes your body.
That's a store and/or grow process depending on your location.

It all comes down to taking personal action before something fails.

Posted by Jim Wilkins on March 25, 2019, 4:15 pm
 <ads> wrote in message  

The lack of posting activity here suggests little interest in taking  
personal action.



Posted by Jim Wilkins on March 29, 2019, 1:11 pm
 
Here in New England USA we suffer power outages from summer hurricanes  
and winter ice storms, typically lasting up to a week or so. What have  
the rest of you experienced?



Posted by ads on March 30, 2019, 1:12 pm
 On Fri, 29 Mar 2019 09:11:06 -0400, "Jim Wilkins"


We're supplied by a co-op here in north-central Georgia, USA. Short
outages are frequent and no planned maintenance announcements have
been made in the 14 years we've been here.  However, the longest we've
been without power was 16 hours (70mph straight-line winds taking the
tops out of trees in a July thunderstorm) with the next longest being
12 hours (7" to 12" of snow in December in a county that rarely sees
more than 3"). We've had some slightly shorter winter outages from
freezing rain.   They do keep the lines in good condition, having been
in a replacement program for aerial distribution cable (40+ year old
lines) for the past two years.

The power the co-op delivers isn't as clean as that delivered by the
2000 watt pure sine wave inverter on my solar-charged "Wait until
daylight" backup power system that can provide 10 to 24 hours of
limited power (fridge, furnace, some LED lights, internet) depending
on the season. The  AC waveform was checked with a battery powered
scope in an all-plastic case so it's totally isolated.  The co-op
power has a slight jog on the trailing edges of the peaks (positive
and negative).

With the co-op's history of fast power restoral, having a little power
available overnight is usually adequate.  I also have an inverter
generator and 20 gallons of treated fuel available.  If there's sun,
we'd have limited solar power for multiple days.  Without sun, the
inverter gen can run for about six hours on a gallon of gas and that
would cover cooling down the freezer along with running the fridge and
furnace and charging the battery bank enough for another night.

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