New energy big picture book by Vaclav Smil: “Energy and Civilization”.
[amazon.com] – Energy and Civilization: A History
[anoutsidechance.com] – Energy And Civilization: a review
[deepresource] – Vaclav Smil on Energy Transitions
[wired.com] – This Is the Man Bill Gates Thinks You Absolutely Should Be Reading
[Source]Share renewable energy Germany timeline
The renowned German Fraunhofer research institute presented in 2012 a blueprint of how a 100% renewable energy base could be realized in Germany. From the summary (p31):
It is possible for Germany to have a 100% renewable energy base (electricity and space heating) with a cost comparable with today and equal electricity consumption. Assumed though is a reduction of 50% of energy required for space heating through insulation measures. Wind power opportunities need to be completely exhausted. Long term energy buffering can be done with methane gas produced from renewable electricity. Warm water production from solar collectors and industrial waste heat, combined with seasonal storage. Installed PV: 200 GW (1250 million m2), solar-thermal: 130 GW (190 million m2). 75% can be installed on existing building roof tops. Additional required surface area: 400 km2 (20 x 20 km) or 0.011% of Germany.
[ise.fraunhofer.de] – 100 % Erneuerbare Energien fuer Strom und Waerme in Deutschland (German)
Talk Princeton 2016.
Hall comes from ecology and that’s where he minted the concept of energy return on invest. It was first applied to fish and fish migration patterns. Hall discovered that my moving around at the energy cost of 1 calorie, the fish gained 5 calories (salmon eating plankton). Life in general has to engage in energy investments.
Next Hall applied EROI on humans. Hunter/gatherers need to walk/run to find food, nuts and animals. Fire enhanced EROI since it made cooking of food possible, which was more abundant and easier to acquire than animals.
Next step agriculture allowed for food storage, yielding in EROI in the range of 10-50, enabling leisure, resulting in socializing, like story telling.
Next step fossil fuel exploitation. Secret: you want more wealth? Use more energy. During Hall’s lifetime, energy use per capita, as well as wealth increased by a factor of 7.
Next graph that shows the % of GDP spent on energy, with a sharp decline after 1850 (application of coal). In the 1990s that % went up again. Hall states that EROI of most of our fuels is declining as they are depleting.
Hall acknowledges the importance of technology and that technology is in competition with depletion and refers to his book about (low) EROI of solar with Pietro. Pietro today is even more pessimistic about EROI of PV-solar than before.
Refers to the reality of peak (conventional) oil. Decline EROI of Norwegian North Sea oil from 1:40 to 1:20. Patterns applies to everywhere else. Net energy cliff. Offshore wind has EROI of 52. Shows picture with peak fossil (all included) at 2045. Familiar pyramid of cultural achievements as related to EROI. For arts you are supposed to need 14:1 (a ridiculous notion, the highest art was created before the fossil fuel age).
Hall has extremely little hope for renewable energy and suggests that by 3000, humans will be hunters-gatherers again. Hall nevertheless says it is wise that we move the renewables and downplays importance climate change a little and that the EROI discussion-implications are more important for society.
[cassandralegacy] – Charlie Hall speaks about EROI (and many other things)
[wikipedia.org] – List of countries by energy intensity (2003)
|Country||Ton of oil/million $ GDP|
Countries like Russia and to a lesser extent the US with lots of resources don’t need to invest too much time and effort in reducing energy waste as other (European) countries and Japan, that have few natural energy resources.
The video and Wikipedia differ about China, probably due to 12 years time difference.
List 1990 – 2014
[worldbank.org] – Energy intensity level of primary energy (MJ/$2011 PPP GDP)
[yearbook.enerdata.net] – Energy intensity of GDP at constant purchasing power parities
Rijswijk Buiten is located near The Hague. Unlike almost any other group of houses, these ones no longer have a connection to the natural gas grid. Electricity comes from solar panels and powers heat pumps for space heating via floor heating.
Between now and 2023, 3500 new energy neutral homes without connection to natural gas grid are planned to be build. From 2020 every new build home in the Netherlands must be energy neutral like the ones presented here in Rijswijk Buiten.
Ecofys on behalf of the European Commission presented a study, giving thumbs up for onshore wind energy.
Onshore wind is cheaper than coal, gas or nuclear energy when the costs of ‘external’ factors like air quality, human toxicity and climate change are taken into account, according to an EU analysis.
The report says that for every megawatt hour (MW/h) of electricity generated, onshore wind costs roughly €105 (£83) per MW/h, compared to gas and coal which can cost up to around €164 and €233 per MW/h, respectively.
Nuclear power, offshore wind and solar energy are all comparably inexpensive generators, at roughly €125 per MW/h.
[theguardian.com] – Wind power is cheapest energy, EU analysis finds
[ec.europa.eu] – EU report: Subsidies and costs of EU energy [pdf]
[ecofys.com] – It should be kept in mind that Ecofys is a renewable energy consultancy firm, so not entirely impartial.
|Country||Energy Intensity (toe/million $)|
An interesting question in a world that is slowly running out of fossil fuel reserves is: how much energy does a country need to generate its wealth? The table gives the answer for a number of OECD countries, plus a few countries of special geopolitical interest. Keep in mind that geographical location has an inevitable influence on energy use; colder countries need more energy for space heating. The units in the right column represent tonnes of oil equivalent per million constant year 2000 international dollars.
Switzerland needs 1031 barrel of oil to generate 1 million $ income, Russia 4386.
[wikipedia.org] – List of countries by energy intensity
Dutch language video. This is claimed to be the most energy efficient home in the Netherlands with no fossil fuel usage. Meanwhile the ‘zero home’ is a ‘plus home’, supplying surplus energy for a car to drive 36.000km/year. Location Groenlo/Netherlands. Person in the video Ronald Serne (inhabitant). Panes with three layers glass. Total autonomous electricity production 5000Kwh (4 persons, including 2 children), divided over 3500 Kwh direct consumption and 1500 Kwh for generation of 2500 Kwh heating and 3600 Kwh hot water. Energy neutrality only over the entire year; feed-in into the grid of generated excess electricity during the summer is accepted. Ingredients of concept: thorough isolation, air-tightness, soil heat exchanger, three layered glass, southern orientation, passive solar energy, heatpump, thermal solar sollectors, heat storage.
Interesting details: most western European countries consume ca. 20 kwh per day (Germany, France, Spain, Netherlands, Russia). US citizens consume almost double that amount: 39 kWh. Canadians top the list with 52 kWh, Australia 34 kWh. Coming world power China is at 7 kWh.
Philips Electronics developed a new LED CFL tube, called TLED (TL + LED), which consumes less than 50% of the current fluorescent tubes and is the world’s most energy-efficient LED lamp suitable for general lighting applications. The people from Philips achieved 200 lumen/Watt, a world record. Since 20% of electricity consumption is dissipated in lighting, this innovation could lead to reduction of global electricity consumption of 10%. The Dutch multinational company just made the energy transition 10% easier, as far as electricity is concerned. For the US alone replacement of all existing lighting with these TLEDs would reduce power consumption with 100 terrawatt or the equivalent of 50 medium sized power plants. Philips intends to start production in 2015.