Tag: energy

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Own Production

The 21st century has seen many innovations. Solar energy has been around for at least 3 decades now, but the wide spread application and adoption of it through consumers has taken quite a while. Nowadays you can buy a reasonably priced solar panel in your local shop selling gardening tools and home appliances. Solar panels have moved from a niche product to become an ordinary home enhancement product. Previously, the production of energy was highly regulated and restricted to business activities. Hence as producer and consumer of your own energy you became a “prosumer” of energy. Just refrain from selling the energy to your neighbors and you will be happy monitoring your own energy production and your energy consumption throughout the day as well. Suddenly, you might make a few behavioral adjustments to your daily routine. Throughout the day when the sun is shining bright you start to think of what kind of energy consumption you might want to switch on at the time. Charging mobile phones, cooking meals and washing are the obvious candidates that do the trick. Charging a battery of a bicycle(s) is also a good idea. The excursion of the evening or cycling to work the next few days is feasible with this as well. There is a slight danger to check the energy production frequently to optimize the return on your investment. In this case it might be expedient to invest also in a battery to store the energy  for a longer time. No stress for consuming your nuggets, but initial investment costs are substantially higher, albeit prices for batteries have come down significantly in the last few months. “Prosit prosumers”.

 

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Sun power

Statistics of hours of sunshine in Germany and many European countries show an extraordinary amount of sunny days in March 2025 compared to previous years. This opens up a window of opportunity to produce electricity already in a month previously less likely to yield a lot of energy. With more likely 8 months of decent electricity production the efficiency of investments in solar energy reach break even points earlier. Time to think of expanding the share of renewable energy even further. The cost effectiveness is improving in rather unpredictable ways. Economists, of course, consider opportunity costs in this case the alternative to use oil or gas despite the higher levels of CO2 emissions. As the prices are currently lower as well, without an easily predictable trend, solar alternatives are a valid option.

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Design skills

The is a huge B2C or C2B market in connection with home design and adaptations. Nowadays people are inspired by instagram, pinterest, YouTube and TikTok. Additionally, many play around with Apps to create their own images of how they would like to arrange or rearrange their home. Some have taken first steps to include measurements of their home in the design. The compatibility with professional software of the construction sector, however, is a drawback that delays or leads people to go to enterprises that take into account the prior efforts of young lay designers. It is a little bit like an own contribution in home building quite popular among new home builders to alleviate the upfront cash needed for first home acquisition. The younger generation could offer some of their “digital native” skills to bridge the gap in construction and home design. Of course, reworking and precise measurements on the location will still be required as construction has a lot of legal liability issues involved. Cooperation is a form of burden sharing to advance faster and/or with lower costs.

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Wave and Particle

The history of ideas in physics has been evolving or revolving a lot around the wave-particle-duality. Even if the basic debate by now is about a century old, we still need to come to grips with this challenging notion that light is not just a beam and nice colors through a prism yielding a spectrum of frequencies, but it can emit material matter called photons that have a non-zero value(s) of energy.
Max Planck came up with the formula E = h × f, where h is the Planck constant, E the energy and f the frequency of the photon. The synthesis of Einstein’s light quanta and De Broglie’s matter waves became the foundation of quantum mechanics.
The exciting evolution of physical ideas results in the state of the “art” view that, for example, light can take both forms, wave and particle, at the same time. Quantum mechanics has become a thriving field in physics and is currently transforming the world of computing in the 21st century. The amounts of funds invested in the race of applications of quantum computing across the globe are “astronomic” and have become part of dual-use spending of research funding. Encryption of information or access codes are of growing importance for civil (banking, mobility, health info) or military purposes. The speed of quantum processors will allow cracking of codes much faster and therefore new dangers are looming in many fields. It is a rather competitive field, which has evolved a lot from the original wave and/or particle vision of the world (of physics).
For social scientists there are several examples of applications of the concepts of quantum mechanics to social and behavioral sciences (Link 1, Link 2). Hard to predict, whether the wave and/or particle view will dominate the social applications of elements of the history of ideas in physics. New concepts in science challenge our traditional science-based thinking about time, space and space-time with implications even for our understanding of causality and covariance.
(Image of Dice icoshahedron (animated 3D image) from Egypt, dated to 2nd century before our time, BNF, Paris)

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Sunny Trade

Some countries or regions struggle with trade deficits or trade surpluses, which cause worries to their partners. Eurostat publishes regularly the latest trade figures for the EU with external partners. The EU as a whole has a trade surplus in September in 2024 of € 12 billion. From January to September in 2024 the surplus accrues to 140 billion already. Overall, this is a rather sunny picture of EU trade. As we import raw materials and fossil energy mainly, the rest of the world is largely appreciating what we do with the imports, at least in an economic sense, environmental concerns tend to be neglected in such considerations.
The import statistics and figures do not capture the contribution of the sun to our energy balance sheets. We import energy from the sun almost on a daily basis and our trade statistics to not capture this, despite their huge impact on production and the fossil energy trade imbalance we report each month. Imported energy, the largest negative position in our sunny trade balance, in the EU amounts to € 20 billion per month. Harvesting more wind and solar energy as well as geothermal sources and energy storage require huge investments, but millions of Europeans are willing to contribute to this effort. With rising protectionism we should act now to avoid years of structural trade deficits in the coming years. There should already be more sun in the still sunny trade balance. To keep it that way more sunny trade will do the trick.
(Image from Eurostat, 2024-11-18, Euro area trade balance by product group in billions of €, original states in %, retrieved 2024-11-29)

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Build Tec

Home construction has turned into the art of isolation. Saving energy is easiest in a well isolated home. Besides the roof the walls, doors and windows are next issue. Isolation inside and/or isolation outside are good points of departure. Heat pumps are the next step that needs attention. This is already a sequence of works that have to be planned well in advance. Electric current or LAN wiring or even fibre are additional features a modern home should be equipped with. Lots of different skills involved that we are unlikely to find in traditional occupations. Networks of enterprises are involved in building technologies. Startups in this area could offer better integrated services to clients to advance energy savings rather than the traditional skill sets spread over multiple trades and occupations. Learning tasks and skill needs are abundant.

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Ener Tech

The future energy lab in Berlin proposes valuable advice and guidlines for the „prosumer“ revolution in energy technology. From the own or home production of energy, the sharing of investments and infrastructure to the distribution network and finally consumption, the whole life cycle of energy is treated with a concern for environmental and financial sustainability Sharing is the way forward and many solutions build on this basic idea to move beyond the individualistic approach and fossil fuels cheap in the short term, but more expensive to society in the medium to long term. As most solutions make use of digital tools the issue of cyber security has to be a concern right from the beginning or even the planning phase. Joint production and consumption rely on people and communities reaching compromises. However, wholesale resourcing and averaging over households allows cost savings. The technology is available already, the skilled people to implement these solutions are currently the bottleneck. DIY will have to bridge the gap as neighbors learn from neighbors as yet another form of community building and engagement. (Image gamification of community decision making, SCCON Berlin 2024)

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Mobi Tech

There is much more to mobility and technology than new cars and bicycles. Innovative infrastructure provided by new public services allows new forms of mobility technology to strive. Charging points across a country are crucial to ensure smooth and smart mobility for example with e-cars and e-bikes. Software guides us to next or cheapest charging point in the surroundings. Public services provide the basic data on this and need trustworthy updating and repair of the infrastructure to avoid frustrations. Navigation systems need up-to-date info on areas with restricted mobility due to high emissions (diesel) or illegal parking of shared bikes and rollers to avoid a banning of share options in inner cities. Data allow the guidance of traffic and combinations of different modes of transport. Mobility tech is nowadays a largely data driven process and public services provide important basic services and information for innovation and reduction of emissions in the field of multimodal mobility.

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LED light

For decades now, we have the LED light technology around us. In many instances we do no longer realize the presence of light emission devices (LEDs) for example in our television screens or in road lighting. However, this still is an exciting field of electrical engineering and the replacement of gas lighting as well as other electrical devices with higher energy consumption are high on the agenda for sustainable lighting. There are important health and security aspects related to lighting (sleep and road traffic).
In Berlin the demonstration and test area for innovative LED lighting is also an open-air museum which can be experienced throughout the year. The party-goers and club visitors might best know the demonstration street as part of the “Deutsches Technik Museum” The energy saving potential of LEDs use in street lighting is substantial and should interest most rural and city councils. The demonstration of the differential effects of targeted lighting and broad illumination based on the same technology is impressive. Of course, the design aspect of LED-technology with the colourful potentials are of interest beyond the technical aspects to replace for example gas lighting. There is much more to lighting than just opening your eyes in the morning. (Image FG Lichttechnik TU Berlin)

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Gas light

Even if it sounds crazy from today‘s perspective gas lights once were the symbol of progress. In the middle of the 19th century gas lights started to lighten and brighten the boulevards of major cities in Europe. The historic evolution of the various designs can still be followed in Berlin in the open space museum of gas light in the Tiergarten area near Zoologischer Garten. These gas lights were brighter than candles or petroleum lights and needed less maintenance. The CO2 footprint was no concern at that time and also safety concerns have been tolerated. Mechanical maintenance was relatively easy and sufficiently qualified personnel still abundant. All this has changed and the lamp posts powered by gas are mostly a part of industrial history now. The image below shows a fine example from Amsterdam. The solid construction shows nice ornaments on steel. The rounded shape remained quite unique.
Unfortunately, the accessibility of the museum has contributed to the loss of many nice examples of gas light designs. Many were destroyed during the football world cup in Berlin in 2006. Let’s hope the Tiergarten survives the Euro2024 better than the previous huge football events and Love parades. Serious precautions have been taken with quite solid fences to protect the inner city wild life.

Berlin Gas Light Museum
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Electricity

We all use electricity, not only daily but continuously. But do we really know or remember how it works? Surprisingly, we care very little about the energy provision or the physics behind it. Therefore, from time to time it is useful to dive into the details of generating electricity and thereby energy and how it arrives at our doorsteps or desks. In science museums you can literally walk through the history of power generation. A fine example is the Energy Discovery Centre in Tallinn, Estonia. Even for those you did all at school turning the handles of generators is a playful reminder of the basic principles of electric power generation. The efficient use of it, is a topic that needs to be covered as well. Searching the web for demonstration videos is fine as well, but the physical activity of moving induction coils and releasing sparks is difficult to rival. Opening up your mind for the physics of our lives yields a better grip on the challenges of electricity grids and local production of electricity. Are you already a prosumer? Combining electricity production and consumption in one household is surely a forward-looking strategy. Raising awareness for these topics concerns all generations. Take time for a power play, it is truly enlightening. For teaching professionals or want to be there are exciting programs out there, too. Just one suggestion for 2024 in Colorado, US.

Energy Discovery Centre Tallinn
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Energy Storage

On a sunny and windy day, even in winter or spring, renewable energy is abundant. If demand is stable prices will drop. Prices will rise again as demand for energy picks up. Hence, this is an obvious case for trading opportunities. All you need is … energy storage. All so-called prosumers, short for producers and simultaneously consumers have a lot to gain if they are able to store energy when it’s abundant and cheap. Sell it when it is expensive or use it yourself if needed. Just keep an eye on the costs of energy storage. A stylish insulated carafe is a well known example of storing hot water for astonishingly long time. Insulation is key to store transformed electric energy here. Other options use kinetic energy like pumping water to a higher level and then generate electricity again when the water returns to the lower level. Of course, batteries are a simple way for energy storage as well. Costs seem to come down rapidly and less environmentally hazardous materials leave the laboratory almost every month. It is about time to consider this seriously. More and more cities have understood that energy storage can generate cash for them (Example Feuchtwangen) and appears to be a worthwhile investment for a local power generating community. For the time being my favorite energy storage is the insulated carafe. It is often the beginning of energizing conversations.

Old school energy storage
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Gas Reduction

Gas consumption in the EU has been reduced by about 20% since the beginning of Russia’s war on Ukraine. This is a considerable accomplishment and has been sustained for 2 years now. The major element in this has been the reduction of gas consumption in industry, but also households have successfully managed to reduce heating of rooms and water with gas.
Diversification of provision with sizable increases in the provision by the U.S.A is another element in the beginning of a trajectory of gas reduction in Europe. Germany as a major consumer of this type of energy supply is also making strides in shifting consumption. This is my short summary of the report by IEEFA.org in 2024-1. All electric devices like heat pumps could speed up the gas reduction further according to the policy recommendation by IEEFA in 2024-2 reducing costs of living and CO2 emissions further.
Data from Eurostat allow to compare monthly data across Member States. The overall trend is a market decrease with differential patterns of refilling supply capacities. Big countries in the EU made and continue to make a real difference compared to previous years (see table below). The comparison of December and January figures across years reflect the months with high sensitivity of the public for heat and cold. Further reductions of gas consumption is feasible due to the mild winter months of 23/24 which allow to reduce heating costs for many households and offices. Good news for the planet and hopefully a move in the right direction to shift away from heating with gas.

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Renewables

Renewable energy has reached for the 1sr time a share of more than 50% in Spain and Germany in 2023. This is an astonishing milestone in the energy transition of both countries. For Spain a report from Red Energy Espanola attributes the Spanish success story to the expansion of mainly wind energy (Link). The increase of renewable energy in Germany is due to a more rapid expansion of solar energy (Link). In any case a continued expansion of both forms of renewables allows to reduce the share of fossil fuel even more rapidly than previously estimated. Good news for the planet particularly to phase out energy from coal due to its highly polluting side effect. Countries with faster trajectories shall serve as examples that it is feasible to manage the energy transition also for large countries. Political instability might be a price worth paying considering the positive effects for future generations. Managing the transition in a just way which means to assist poorer households, ensures the respect of social policy targets at the same time. With this in mind the energy transition can be perceived by all as an opportunity rather than a threat to their welfare and wellbeing.

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Energy Storage

News agent Reuters has published an analysis of the setback for short peak coverage of electricity by power plants fueled with gas. Conclusion: economically no longer viable. Investors draw back even from contracts already signed. What is the game changer technology here. Batteries that store energy just like the batteries of millions of cats that have a storage capacity to supply energy for a whole household for more than 2 days. Other giant batteries cost only half the price compared to 5 years ago equal to $150 per kwh. In five years solar energy doubled its share of energy production to now reach the same amount as energy provision by gas.
Reaching a critical turning point in energy generation, investors flock to the more profitable medium or long-term investment. Good news for the planet. Wind and the sun are all around us. We have only started to cover roof tops of office buildings, car parks and other shelters. Start thinking about your energy storage as of now and reserve a suitable space for it. Costs are coming down rapidly in a few years or maybe only a few months.

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Sonnendank

Jeder kennt den Sonnengruß aus dem Yoga. Jetzt gibt es eine neue Variante des Sonnengrußes. Nach vielen anderen Bundesländern hat sich Berlin an seine Mieterinnen, Pächterinnen und Eigentümerinnen gewandt, damit sie sich an der Ernte der Sonnenenergie beteiligen. Mit € 500 wurden kleine Steckersolarkraftwerke gefördert, die jede/jeder beantragen konnte der den Hauptwohnsitz in Berlin hat. Interessant war die erweiterte Interpretation des Balkons. Es wurden Kleinanlagen für Balkon, Terrasse, Gartenzaun oder auch für die Gartenlaube in die Förderung einbezogen. Alles digital zu erledigen, bitte.
Die öffentliche Förderung wird wohl die 2-3 fache Summe an privaten Investitionen anreizen. Das kann dann schon ein Anfang sein. Die Aussicht auf mehr Balkon- und Laubenpieper, die Strom für den Eigenbedarf erzeugen, kann hoffentlich mehr Personen bewegen, derartige Investitionen rasch umzusetzen. Viele Beispiele zeigen die Wirtschaftlichkeit solcher kleiner Investitionen, aber einige Jahre des Betriebs sollten schon einkalkuliert werden. Viel hängt dabei von dem allgemeinen Strompreis ab. Seit der Aggression Russlands in der Ukraine wissen wir, dass es noch viele weitere Gründe für die Beteiligung an der Energiewende gibt. Mehr Energiesouveränität fängt im Kleinen an, eine dezentrale Erzeugung und Verbrauch vor Ort kann sogar eine Netzausfall oder Notfallreserve darstellen.
Zu dem morgendlichen Sonnengruß reiht sich dann bald der tägliche Sonnendank ein. Mit dem entsprechenden Messgerät lässt sich die Sonnenernte leicht in Zahlen fassen und wir hören es buchstäblich im Geldbeutel klingeln. So werden gleichzeitig Steuergelder mit einer Hebelwirkung durch zusätzliche private Investitionen sinnvoll eingesetzt. Ein Digitalisierungsschub der privaten Antragsstellenden, Betreibende der Anlagen und öffentlichen Stellen ist ein zusätzlich sinnvolles Nebenprodukt. Papierlose Verwaltung ist ein Megaprojekt. Jetzt danken wir aber erst einmal der Sonne als großzügigem, selbstlosen Energielieferanten. (Image: IBB Webseite 2023).

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Energiewende lokal

Neben dem vielen politischen Geschrei vollzieht sich die Energiewende oft schon unter dem Radar der breiten Massenmeinung. Unzählige lokale Initiativen machen Energiewende von unten, statt auf die große Politik mit ihren Subventionstöpfen zu warten. Das rechnet sich langfristig und bezieht viele lokale Akteure mit ein. Kelheim, an der Mündung der Altmühl in die Donau, schafft es mit kleinen Schritten, weniger Gas zu verbrauchen und die Bierbrauerei mit Energie aus Pellets lokaler Holzwirtschaft zu betreiben. Recyclen der Flaschen mit Mehrwegkonzept trägt zu weiteren CO2-Einsparungen bei. Der lokale Konsum ist dabei inbegriffen.
Lokale Energiewende wird oft von unerwarteter Seite noch ausgebremst. Geplante Windräder ebenfalls in Kelheim (Bayern) scheitern an der Bundeswehr, da sie Vorrechte geltend macht für Flugkorridore. Wir wissen gar nicht, welche Barrieren noch gefunden werden können, damit lokale Energiewende Realität werden kann. (Bericht Deutschlandfunk).
Damit wir weg vom Gas kommen, brauchen wir viele Anstrengungen von allen. Für die kommunale und regionale Energieplanung ist das durchaus eine Jahrhundertaufgabe. Unsere Gasometer, die vor hundert Jahren den Gasdruck lokal reguliert haben, sind oft schon für neue Nutzung erschlossen. Die Befreiungshalle nahe Kelheim heißt im Volksmund schon lange Vereinsbier- oder Freibierhalle, jetzt vielleicht sogar aus „nachhaltiger“ Produktion. Die Auenlandschaft wird wohl nicht so schnell wieder nachwachsen. Weniger Zellstoff-, dafür mehr nachhaltige Bierproduktion ist doch eine interessante Perspektive. Photo: Auszug aus https://loc.gov/pictures/resource/ppmsca.00044/

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Energy Ethics

Around the topic of energy there many ethical issues that urgently need sorting out. Carlos Diaz-Rodriguez and co-authors have provided a sound basis for such ethical considerations. To leave the disastrous path of energy provision through polluting fossil fuels and, additionally very risky, nuclear energy, they propose a departure from the principles and values that have guided us into a dead end. In their opinion we suffer from a mistaken belief to be able to control in extremis, through scientific methods, the forces of nature. In ethics this mistaken belief has roots in religious beliefs that mankind is mandated to make the earth subordinate to its own will. The authors propose to overcome this old paradigm with a new paradigm. This builds on the (1) “precautionary principle”, (2) justice as equity, (3) protection and the (4) principle of responsibility.
Most European readers of philosophy and social science are familiar with these principles. The virtue of the paper is to expose and juxtapose these principles in a clear format and a stringent application to the ethics of energy (production as well as consumption of it).
The precautionary principle is part of the European treaty on the functioning of the European Union Art. 191, but its implementation on energy issues reveals that it is a tiger without teeth. Younger generations across the globe are right to claim a more forceful implementation of this principle.
The perspective of justice as equity is bringing in later born generations as well into the balance costs and benefits of “cheap energy today” but huge costs of dismantling, repairing, stocking deferred to the future.
The protection principle refers to the loss of biodiversity and exploiting resources in areas of world heritage, for example.
The principle of responsibility goes beyond the judicial and economic principle that the person, company or state causing damage through exploitation of resources, and in producing energy with it, has to pay for repairing those damages.
As this is hard to achieve in real terms, there is an urgent need to reiterate the responsibility principle at all levels. Despite the inefficiencies of legal systems, the international legal order in particular, there is no way around than to insist on responsibility from the individual behaviour, company strategic goals as well as objectives set by nation states and international organisations. The Paris agreement and all COP XY conferences only prove the fact that irresponsibility continues to be a guiding principle.
Maximalist positions as well as continuing like decades before is failing people on earth. Organising a discourse on these ethical issues is a first step, but we have to be able to address negationists as well.
The missing principle so far is the solidarity principle. Without a firm commitment to intergenerational and international solidarity we shall remain unable to solve the ethical puzzle. It is high time to organise solidarity related to the field of energy.
(Image: “The fallen tree of knowledge” by Fabrice Samyn. Exposition in Yerres, France 2021-11)

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Energy Food

For more than a decade now researchers have shown the link between energy prices and food prices. At first sight this might seem surprising. In traditional or romantic associations with growing food, there is no link between the cost of energy and food production. Growing crops in your garden does not need more than sunlight, soil and water. Yes, that was long ago. Industrial production of food is heavily relying on energy to heat, feed and water plants or animals. Additionally, the supply chains have become far more distant, which increases the CO2 footprint even further. Therefore, it is no longer surprising that a great number of econometric studies confirm the close link of energy prices and subsequent pressure on food prices. This is not restricted to Europe, but has reached global contamination.
Enjoying seasonal local food is a double catch solution. You grow according to local weather conditions and use traditional conservation methods, if the crop is exceeding your demand at that time. Providing heating for animals to increase productivity or quality of products appears to be one of the most wasteful ways to further increase the spiralling up of energy and food prices.
In agricultural science there is a lot of research into the “energy intake” of animals to better grow or produce more milk etc. This is the expensive intermediary step using energy to produce energy intake for animals rather than humans. It is surprising that we take so many years to address these well-known linkages that have turned to serious problems after Russia’s war on Ukraine. Agriculture and farmers can be part of the solution rather than a problem themselves, if the link of energy consumption and food prices is taken seriously.

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Nuclear War

In the last few years we have witnessed a new surge in the investment in nuclear energy on the global level (IEA). Ever since the foundation of the initiative “International physicians for the prevention of nuclear war” in the 1980s, there have been relentless reminders of the devastating effects of such a war. In 2023 we are all aware of the real risk of attacks on the biggest nuclear power plant located in Ukraine. Nevertheless we continue to invest heavily in power plants that constitute a massive risk at times of war between irresponsible nations. Besides the publication of many high quality papers in The Lancet there is regularly space to keep the awareness of the dangers of nuclear war at a high level. Too many politicians shield themselves from dealing with such realistic dangers in the interest of supposed cheap and save energy for all. Both is no longer the case. Nuclear energy is expensive and unsafe in peace and horrible in war times. We cannot afford to abstract from these rising risks. The hype about anything nuclear like in the 1980s is grossly displaced (image of book below).

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Car Energy

The car industry sells more electricity-driven than diesel-cars for the first time in July 2023 (ACEA, 2023). This is a turnaround, considering the large share of the most polluting cars in the EU. It is difficult to see this as good news as newly sold diesel-cars will be around and polluting for many years to come. Hybrid cars are an own category and full of heavy additional material that allows 2 types of mobility. Tax reductions to push hybrid cars into the EU-market were very expensive for tax-payers and increasing inequality through co-financing rather expensive cars. 36,3%, the largest share, are still petrol-driven cars, with little awareness for further CO2 reductions. This is the slow evolution of the energy consumption pattern of the automotive industry in Europe.
On the energy production side there have been substantial efforts to invest in clean energy, too (IEA, 2023). With the world burning at several places already it is, after all, good news that investment in solar energy production on a global level has reached the level of investment in fossil fuels. Major drivers of this evolution are 1. China, 2. Europe and 3. The U.S. A. (unadjusted for population size) according to this investment report. Grids and storage investments rise equally to new heights, reflecting new distributional aspects of power provision within and between countries. We are in the race against the burning of our planet due to our shameless use of fossil fuels, worst in form of flying small jet planes. Besides the large company and state investments we need the spending and investment power of the masses to speed up the end of the fossil fuel age of polluting dinosaurs. Please do not replace one dinosaur (coal, oil, gas) with another one (nuclear). Too big to fail is maybe an economic rationale, but it does not withstand natural disasters (Fukushima), human failure (Tschernobyl) or war activity (Saporischschja).
(Figure source: IEA, Power investment in billion US$, 2019-2023, IEA, Paris https://www.iea.org/data-and-statistics/charts/power-investment-2019-2023.

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Photovoltaik

Eigentlich ist die Photovoltaik eine alte Technologie. Seit 1954 werden Solarzellen, damals noch mit geringerer Effizienz und teuer, produziert und benutzt. Da hat sich viel verändert und nicht zuletzt durch die sogenannten Balkonkraftwerke sind Solarzellen zu einer weltweit beliebten, rentablen Alternative geworden. Dächer eignen sich wegen ihrer Schräge und oft der Ausrichtung bestens zum Aufstellen von Solarzellen. Renovationen und Neubauten sollten diese Art der Energieerzeugung unbedingt in Betracht ziehen.
Wegen Olympia 2024 in Paris wird dort gerade viel städtische Infrastruktur erneuert. Der “Gare de L’Est” wird beispielsweise von Frankfurt aus mit TGV und ICE angefahren. Da kommen viele Geschäftsreisende und Touristen aus Europa und der ganzen Welt an. Ein Blick auf die Dächer des “Gare de L’Est” von dem Fußweg zum Gare du Nord zeigt viel verpasste Investitionen. Ein Meer von Dächern liegt brach, bestens geeignet zur Installation von Photovoltaik. Das könnte eine Menge an Energie vor Ort produzieren, die die Züge dann direkt benötigen. Mehr Ökostrom statt Atomstrom kann einfach sein. Es fehlt nur oft der Wille. Nachhaltigkeit und Olympische Spiele ist ein ganz eigenes Thema, nicht nur für Paris 2024.

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Gaslager

Der Gaspreis (TTF in Amsterdam) ist zum Ende Mai 2023 auf ein Tiefstwert von 23,50 € pro Megawattstunde zur Auslieferung einen Monat später gefallen. Der Unterschied zum Höchstpreis von ca 300 € übersteigt die Erwartungen der meisten Kunden. Das sind die Spekulanten und Zwischenhändler. Der Preis für die Endverbraucher bewegt sich weniger. Kartellbehörden in Europa müssen wachsam bleiben damit die Endverbraucher nicht zusätzlich zur Kasse gebeten werden. Gaslager für zivile und militärische Zwecke wurden vom Bund billig vor Jahrzehnten verkauft (Privatisiert) und sind jetzt wieder zu einer unverzichtbaren Infrastruktur geworden. Der Kapitalismus fällt immer wieder in seine eigenen Fallen durch exzessive Volatilität. Öffentliche Infrastruktur braucht langen Atem und sollte dazu dienen, die übertriebene Spekulation mit der zeit Grundversorgung der Bevölkerung zu vermeiden. Gaslager, Öllager, Wasserspeicher und Stromspeicher bei zentraler Stromerzeugung gehören dazu. Dezentrale Lösungen verstärken die Resilienz und Souveränität weiter. Europäische Solidarität hilft enorm, diese Herausforderungen zu meistern. Wichtig ist nicht nur der Einkaufpreis, sondern der Preis vor und nach Steuern sowie Unterschiede zwischen Industrie und Haushalten (Beispieldaten OECD 2014 für Jahr 2012, IEA Gas Market Report various years). Die ökologischen Sauereien rund um die Shale-gas Förderung in den USA haben uns wohl geholfen, besser durch die künstliche Verknappung von Gas für Europa durchzukommen durch die Erhöhung der gesamten Fördermenge. Ein weiteres “worst case szenario” zur Bekämpfung von Preisschocks. (Paper Link)

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Repair 3

Repair is our new mantra. Think of repairing in all domains as of now. Nature is showing us the way how to repair in many ways. Culture is also embracing the shift towards repairing as caring. If we really care about our planet, and there is no planet B, we shall have to repair in many more domains. We are used to repair bicycles, cars, roofs, windows etc. Repairing is never boring. You can improve the performance of a device or building by repairing it, even with relatively small budgets. Isolation of buildings is a good example of investing in upgrades through repairing. Rather than throwing away a functioning heating system repairing it with an energy saving device is enhancing its performance and produces fewer emissions in the short run. Heat pumps are the way forward for new installations. Shifting a sector, heating with gaz, to ensure longer lasting repair and improve options would save a lot of raw materials and CO2 as well. The construction sector has repair work almosts in its DNA, the energy sector will have to make that shift as well. Dare to repair.

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De-risking

Risks are all around us. Risk is the spice of life. True, but this might be an elitist concept of life or business. Survival of the fittest or the best equipped to take risks might be the consequence. After the 3 crises, financial, covid, energy, we have a new impetus to thrive for de-risking. Certainly, concerning our health, we are aware that prevention is key to fight a pandemic. In order to stem an energy crisis, most countries start to rethink their energy mix and achieving more energy autonomy is a major step to shield against risks of delayed delivery or commerce with belligerent states like Russia. De-risking is key in supply chains for industries (automotive production, microprocessors) as well as service providers (cloud services, care givers) just as well. Mariana Mazzucato (UC London) urges us to develop a new narrative to accompany the transformation of our production and service provision models. Mazzucato advocates to learn from lessons from the ground of how to proceed in the best way. Copenhagen is a good starting point to observe how a metropolitan city manages the greening and decarbonisation of a city. It is important to not only target single policies but the coherence of several policies and approaches. In my view de-risking means for Germany and the EU to shield energy systems from foreign, malignant interference. Only local production of energy and nearby consumption of it will ensure the de-risking of energy provision and consumption. Let us start with massive investments in rooftop solar or small wind turbines. Nobody complained about millions of ugly television antenna all around us. Solar cells on balconies contribute to a basic local electricity supply, difficult to target millions of solar cells instead of a single huge and horrifically dangerous nuclear power plant. At the same time ,we reduce dependency on monopoly or oligopoly structures that develop their own agenda (Too big to fail, remember those?). I prefer the reverse statement. Because they are so big, they are doomed to fail and, therefore, fail us sooner or later. The Forum New Economy offered an open and accessible platform for exchange of ideas. That’s a good starting point to address de-risking. Reducing Risk is in the subtitle of Rebecca Henderson’s Chapter 3 on “Reimagining Capitalism” (short Review), but I would like to add the business case for household production of energy for de-risking supply failure and exploitation of consumers through excessive profit margins as a prosumer business case.

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Fukushima

Ein Bericht über die Explosionen von 2 Blöcken des Kernkraftwerks Fukushima lassen uns Menschen ziemlich dumm aussehen. Wir glauben, alle möglichen katastrophalen Ereignisse vorhersehen zu können und werden doch wieder des besseren belehrt. In der Buchserie der Presses Universitaires de France (PUF) erschien in 2022 “Un récit de Fukushima” in dem der Direktor des Atomkraftwerkes vor der Untersuchungskommission berichtet, wie genau die verschiedenen Ereignisse Erdbeben und Tsunami mit der Verkettung von offensichtlichen menschlichen Fehlentscheidungen einhergingen. Planungsfehler, wie zu tief liegende Notstromaggregate, da rasch überflutet, sowie Kosteneinsparungen bei Vorsorge gegen als unrealistisch eingestufte Risiken (so starkes Erdbeben, Tsunami) haben die Katastrophe ermöglicht. Nach Tschernobyl haben wir nun Saporischschja fürchten gelernt. Das Atomkraftwerk Mykolajiw steht wohl als nächster Schrecken auf der Liste. Neben Planungsfehler, Kostensparen und menschlichem Versagen kommt nun die Gefahr von Nuklearkatastropen auf die Liste des Kriegsarsenals. Nicht als Bombe, wie wir bisher annahmen, sondern als nicht schützbare Infrastruktur, die kaum zu verstecken ist. Der nächste Tabubruch ist realistischer geworden. Die Kosten für Abwehrraketensysteme neben jedem Atomkraftwerk wohl etwas teuer und eventuell ineffizient. Wer befasst sich mit derartigen verbotenen Gedanken? Die Schrecken des 21.-ten Jahrhundert könnten sich als noch schlimmer gestalten als wir zu denken wagten. Atomkraft: die Geister, die ich rief, ich werd’ sie nicht mehr los.
Also eine dezentrale Energieversorgung durch Wind und Solar mit 100.000-den von kleinen Anlagen, in Gärten und auf Dächern erscheint als realisierbarer Lösungsansatz. Warum sagt das kaum eine/r? “Everyday for future” its easy. Mehr grüne Energie für Frieden = Greenpeace mal anders.