DeepResource

Observing the world of renewable energy and sustainable living

Archive for the category “renewable”

“Climate Change, Are We Doomed?” Public Discourse Heating Up in Holland

Ir. Guus Berkhout is niet zo maar iemand: afgestudeerd TU-Delft, lid Nederlandse Akademie van Wetenschappen, Officier in de Orde van Oranje-Nassau. O.a. gewerkt voor Shell. Berkhout heeft een open brief geschreven naar onze premier, zie hieronder. Daaronder ons kommentaar.

Geachte heer Rutte,

Geluk heeft te maken met geloof in de toekomst. Daarom kijken velen van mijn generatie met warme gevoelens terug naar de jaren ’60, waarin we veel minder welvaart hadden dan nu, maar waarin we vast geloofden dat alles beter zou worden. Bedrijfsinvesteringen lagen dan ook op een hoog niveau. Wat een verschil met nu, waarin onze welvaart weliswaar aanzienlijk hoger is dan toen, maar waarin het geloof in de toekomst ver te zoeken is. De huidige generatie wordt overladen met inktzwarte verhalen over de toekomst van de aarde. En ze krijgen al jaren te horen dat er in ons land honderden miljarden nodig zijn om te proberen catastrofale klimaatrampen te voorkomen. Het is volgens de klimaatbeweging vijf voor twaalf! Maar is dat wel zo?

Meneer Rutte, ik weet dat u met ons land graag voorop wilt lopen in het nemen van klimaatmaatregelen. Maar bent u er zich wel van bewust dat u vreselijk verkeerd bent voorgelicht? Realiseert u zich wel dat de werkelijkheid heel anders is dan het sombere beeld dat u nu al jaren voorgeschoteld krijgt? Weet u wel dat als we alles gaan uitvoeren wat er in uw kostbare klimaatplannen staat, de wereld slechts 0,00030C minder opwarmt? Dat getal is niet te meten!

In mijn brief wil ik u graag vijf aantoonbare onjuistheden in de argumenten van uw voorgenomen klimaatbeleid voorleggen.

De bewering dat 97% van de klimaatwetenschappers er van overtuigd is dat opwarming wordt veroorzaakt door de mens, is een gemanipuleerd getal. Van de 11.944 klimaatartikelen die werden geraadpleegd waren er 7930 die zich daar helemaal niet over uitlieten, slechts 41 artikelen die er echt in geloofden (slechts 41 van de 11.944!) en de resterende artikelen die min of meer twijfels hadden.

Klimaatverandering is een razend ingewikkeld proces en de wetenschap is er nog lang niet uit. Met name over de effecten van wolken en oceanen is nog weinig bekend. Bovendien, de nieuwste wetenschappelijke resultaten laten zien dat de invloed van CO2 op de temperatuur aanzienlijk kleiner is dan eerder geschat. Dat verklaart waarom tot nu toe de voorspellingen van klimaatmodellen altijd veel te hoog uitkwamen. De daaraan gekoppelde doemverhalen zijn dus niet op feiten maar op fictie gebaseerd.

De wereld van het klimaatonderzoek zit al jarenlang vol met bedenkelijk gedrag. Temperaturen uit vroegere warme perioden worden naar beneden bijgesteld, met als gevolg dat de hoge temperaturen van vandaag uniek lijken in de geschiedenis. Ook zien we regelmatig dat metingen van nu juist naar boven worden bijgesteld, met als gevolg dat metingen en modelresultaten goed overeen lijken te komen. Waarom deze misleidende acties in naam van de wetenschap?

Zon en wind kunnen bij lange na niet ons land voorzien van voldoende energie. Dat is geen zaak van technologie, maar van klimaat. Nederland heeft relatief weinig zon en wind, met ook nog eens een grote variatie in het aanbod. Bovendien, ons land is welvarend en gebruikt daardoor veel energie. We zullen ons land dus propvol moeten gaan zetten met windparken en zonneweiden. Als één van de dichtstbevolkte landen ter wereld is dat geen prettig vooruitzicht. Maar het is nog erger. We zullen ook nog een peperduur back-up systeem operationeel moeten houden om energie te leveren op dagen met weinig zon en wind.

De vaak genoemde optie van biomassa verbranden is aanwijsbaar veel slechter dan het verbranden van steenkool. Waterstof dan? Helaas, waterstof is een zeldzaam gas in de natuur. Dat gas moet de mens dus zelf maken en daarvoor is goedkope groene elektriciteit nodig. Maar die hebben we juist niet. Dus zitten we hier in een cirkelredenering.

In conclusie, meneer Rutte, de wetenschap weet het nog (lang) niet, de natuurlijke fenomenen zon + wind zullen in ons land nooit de benodigde hoeveelheid energie op een betrouwbare en betaalbare manier kunnen leveren, het verbranden van biomassa is erger dan het verbranden van steenkool en groene waterstof is pas toepasbaar als we de groene energie hebben om het te maken.

Maar wat u echt zorgen moet baren is dat de samenleving zienderogen polariseert. Steeds meer burgers willen Nederland niet zien veranderen in een jungle van gesubsidieerde windturbines en zonnepanelen, terwijl ze weten dat er geen meetbaar effect zal zijn op het klimaat. Ze beginnen nu ook te merken aan hun besteedbaar inkomen dat ze er wel veel armer van worden.

Daarom, tot slot meneer Rutte, mijn dringende advies aan u is om klimaatbeleid over een heel andere boeg te gooien. Het kan nu nog. Haal milieu- en klimaatbeleid uit elkaar, stop met de omvangrijke houtkap, temporiseer de energietransitie en geef de burger juiste informatie over de nationale kosten. De laatste wetenschappelijke stand van zaken laat zien dat we ruim de tijd hebben om met deskundige critici – die tot nu toe niet aan de klimaattafels van ja-knikkers mochten plaatsnemen – een alternatief voorstel op te stellen met als beginsel: aanpassen aan zaken waar de mens geen invloed op heeft (‘adaptatie’) en voorkomen van zaken waar de mens wél invloed op kan uitoefenen (‘mitigatie’). Is het bestuurlijk niet onverantwoord van uw kabinet om klimaatbeleid te gaan uitvoeren zonder kennis te hebben genomen van de nieuwe inzichten in het alternatieve voorstel?

[climategate.nl] – Open brief aan Mark Rutte
[climategate.nl] – Guus Berkhout: ‘Stop met doemdenken!’
[wikipedia.org] – Guus Berkhout

Onze reaktie:

Read more…

Renewable Energy Breakthroughs Tipping Point

GreenBiz

Gepubliceerd op 31 okt. 2018

We are at an amazing tipping point with recent renewable energy breakthroughs. To achieve a carbon-free world, the challenge is staggering, but so is the size of the opportunity. Technology and innovation pioneer Bill Gross shares new developments that make this tipping point a reality.

Magnetic Gearing for Renewable Energy Devices

Renewable energy sources, such as wind and wave, can power our world. Currently, mechanical gears are used inside of these energy conversion systems to connect a high-speed electric machine to a low-speed physical energy source. Improving the design of the systems that convert these sources into electrical energy has far-reaching benefits.

[coastalstudiesinstitute.org] – Improving Efficiency, Maintenance and Power Output
[tees.tamu.edu] – Magnetic gears to advance renewable energy technology
[wikipedia.org] – Magnetic gear

Read more…

Intersolar Europe 2018 – Exhibition Highlights

[intersolar.de] – Inter Solar 2019/2020 exhibition dates

[cleantechnica.com] – Intersolar Announces 2019 Award Finalists In Smarter E Europe Show

Energy Transition Index 2019

The World Economic Forum studied 115 countries to see which ones were the best prepared to achieve the renewable energy transition first. The result was no surprise: Europe is best positioned, just like last year.

The report says despite the diversity of the top performing nations in their primary energy mix, systems and resources, they all share certain characteristics, demonstrating a combination of technical advances and effective policy-making and implementation.

Countries with high ETI scores also performed well on their readiness for energy transition, with Finland topping that list, followed by Denmark, and Austria in third.

Again, these countries have commonalities: stable regulatory frameworks, innovative business environments capable of attracting investment and strong political commitment to energy transition.

[weforum.org] – European Countries Are The Most Ready For Global Energy Transition

Shell to be the World’s Largest Electricity Producer by 2030

[source]

Royal Dutch Shell Plc plans to become the world’s biggest power company despite electricity’s historically narrow margins.

The world’s second-largest oil explorer by market value is spending up to $2 billion a year on its new energies division, mainly to grow in a power sector it envisions delivering 8 percent to 12 percent annual returns, according to Maarten Wetselaar, director of Shell’s integrated gas new energies unit.

“We believe we can be the largest electricity power company in the world in the early 2030s,” Wetselaar said in an interview with Bloomberg TV on Monday. “We are not interested in the power business because we like what we saw in the last 20 years. We are interested because we think we like what we see in the next 20 years.”

[bloomberg.com] – Shell Says It Can Be World’s Top Power Producer and Profit
[royaldutchshellgroup.com] – Shell says it can be top power producer and make money
[cleanenergywire.org] – Shell says Sonnen purchase part of effort to become world’s largest power company
[businessinsider.nl] – Shell wil in 2030 het grootste stroombedrijf ter wereld zijn

Thermal Solar to Electricity Conversion Efficiency 34% With Stirling Engine

CSP-Stirling is known to have the highest efficiency of all solar technologies (around 30%, compared to solar photovoltaic’s approximately 15%), and is predicted to be able to produce the cheapest energy among all renewable energy sources in high-scale production and hot areas, semi-deserts, etc.[citation needed] A dish Stirling system uses a large, reflective, parabolic dish (similar in shape to a satellite television dish). It focuses all the sunlight that strikes the dish up onto a single point above the dish, where a receiver captures the heat and transforms it into a useful form. Typically the dish is coupled with a Stirling engine in a Dish-Stirling System, but also sometimes a steam engine is used. These create rotational kinetic energy that can be converted to electricity using an electric generator.

In 2005 Southern California Edison announced an agreement to purchase solar powered Stirling engines from Stirling Energy Systems over a twenty-year period and in quantities (20,000 units) sufficient to generate 500 megawatts of electricity. In January 2010, Stirling Energy Systems and Tessera Solar commissioned the first demonstration 1.5-megawatt power plant (“Maricopa Solar”) using Stirling technology in Peoria, Arizona. At the beginning of 2011 Stirling Energy’s development arm, Tessera Solar, sold off its two large projects, the 709 MW Imperial project and the 850 MW Calico project to AES Solar and K.Road, respectively. In 2012 the Maricopa plant was bought and dismantled by United Sun Systems. United Sun Systems released a new generation system, based on a V-shaped Stirling engine and a peak production of 33 kW. The new CSP-Stirling technology brings down LCOE to USD 0.02 in utility scale.[citation needed]

According to its developer, Rispasso Energy, a Swedish firm, in 2015 its Dish Sterling system being tested in the Kalahari Desert in South Africa showed 34% efficiency.

Website comment: interesting! But one would tentatively guess that an array of solar panels will probably be cheaper in a long-term per kWh cost.

[wikipedia.org] – Solar Thermal Energy, Dish Designs
[ripassoenergy.com] – Company Site

Tegenlicht – Doorbraak van Duurzaam

Nyrstar – The Next Royal Dutch Shell?

The European Union has decided it wants a 100% renewable energy future and as the saying goes: “He Who Says A Must Say B”, with “A” being a renewable energy base and “B” the required energy storage facilities. This implies giant business opportunities for those companies, that can provide for large-scale energy storage options, options that become a necessity if a society begins to heavily rely on intermittent renewable energy sources solar and wind. Batteries and pumped-hydro can only provide hours worth of storage. What is really required are seasonal storage options, with a size in the order of 40% of annual primary energy consumption, to be able to completely compensate intermittency and waive energy demand management.

Several candidates for seasonal storage exist. First of all the largest share of primary energy consumption is used for space heating. A lot of fossil fuel can be saved if solar heat is stored in large bodies of water or other bulk materials. Excess renewable electricity can be converted in hydrogen and if necessary further converted into other forms of chemical energy that are easier to maintain than hydrogen, like ammonia (NH3), natural gas (CH4).

A relatively unknown possibility is using hydrogen to reduce metal-oxide powder (“reduce” as in: “strip of oxygen”) and turn it into pure metal powder that can be burned again, back to metal-oxide, thus creating a carbon-free closed-loop. Few people realize that metals can burn, a process mundanely known as “rusting”, yet they can, as fine-grained powders, the finer the better:

In contrast to hydrogen, metal powders like iron can be stored, moved around, traded easily at room temperature and ambient pressure for as long as you want, provided you keep moist away. Potentially suitable metal-powder-as-fuel candidates are: lithium (Li), boron (B), magnesium (Mg), aluminum (Al), silicon (Si), iron (Fe), and zinc (Zn).

IF metal-powder can assert itself as an efficient energy storage vehicle for the 21st century, dominated by the EU renewable energy policy and Paris Accords, the sky is the limit for those companies already specialized in reducing metal ores into pure metals. They could become the successors of the Seven Sisters that dominated the 20th century and become the energy companies of the 21st century in that they lay their hands on every renewable kWh and convert it into metal powder.

This possibility has been recognized by Zinc-giant Nyrstar, located near the small town of Budel-Schoot in the South of the Netherlands at the Belgian border, conveniently situated at a run-down, but upgradable “Iron Rhine” railway-line, connecting the Antwerp Harbor and the German industrial Ruhr-valley heartland. This is the rationale behind the recently initiated Metalot energy storage campus, located next to the Nyrstar zinc factory in Budel-Schoot.


[fabriekofiel.com] – Budel

[wikipedia.org] – Nyrstar
[elsevier.com] – Recyclable metal fuels for clean and compact zero-carbon power
[deepresource] – How Much Storage is Needed?
[Google Maps] – Nyrstar, Budel-Schoot

The Geopolitics of the Energy Transformation

This data is taken from the Shell Sky Scenario (2018), which has the merit of forecasting to 2100 and therefore projects the nature of the energy transformation over the course of the century. Other energy transition scenarios usually have shorter time horizons. The Sustainable Development Scenario (SDS) of the International Energy Agency (IEA), for example, only looks forward to 2040. IRENA’s REmap scenario goes to 2050. Shell’s forecast share of renewables and fossil fuels is similar to that of the IEA SDS scenario for 2040 as well as the DNV GL and Equinor Renewal scenarios for 2050. The IPCC 1.5 degree median scenario and IRENA REmap scenario anticipate a substantially larger share of renewables by 2050 with an earlier peak in fossil fuel demand.

Finally some good news for poor countries of Africa: superb solar irradiation and cheap labor positions this region to become a competitor on the global hydrogen market.

Potential for wind energy. They forgot to color the North Sea, one of the most potent regions on earth for offshore wind, with average wind speed of 10 m/s and shallow water.

[irena.org] – A New World – The Geopolitics of the Energy Transformation
[wikipedia.org] – International Renewable Energy Agency
[cleantechnica.com] – Renewable Energy To Remodel World Dominance Patterns

2018 Status Renewable energy in Europe

From Executive Summary:

In 2017, renewable energy again accounted for the overwhelming majority (85 %) of new EU electricity-generating capacity… The EU-wide share of renewable energy in final EU energy use increased from 16.7 % in 2015 to 17.0 % in 2016 and to an expected 17.4 % in 2017… However, the average yearly growth in the RES share slowed down in 2016 and2017, compared with the average annual pace of growth recorded between 2005 and 2015. As shown elsewhere (EEA, 2018b), the slower RES progress in recent years can largely be attributed to increasing energy consumption across Europe. Although installed renewable capacity has continued to grow, the proportion of energy from renewable sources has fallen as more energy from non-renewable sources is consumed… The increased use of renewable energy sources since 2005 allowed the EU to cut its fossil fuel use and the associated greenhouse gas emissions by more than one tenth in 2017.

[eea.europa.eu] – Renewable energy in Europe — 2018

Connecting Remote Renewable Power Generation to the Market

Siemens video highlights HVDC technology as the effective solution to transmitting renewable power over long distances.

[wikipedia.org] – High-voltage direct current
[power-technology.com] – The world’s longest power transmission lines (2014)
[wikipedia.org] – List of HVDC projects

Name Country Length (km) Voltage (kV) Year Power (GW)
Rio Madeira Brazil 2385 600 2012 7.1
Jinping-Sunan China 2090 800 2012 7.2
Xiangjiaba-Shanghai China 1980 800 2010 7.2
Inga-Kolwezi Congo 1700 500 2009 0.5
Talcher-kolar India 1450 500 2003 2.5

The World’s First Major Renewable Energy Economy

Germany is on course to become the first major renewable energy economy. English-spoken documentary from Eastern Germany.

38% Electricity OECD Europe Renewable

More than gas and coal combined (March 2018).

[twitter.com] – IEA

[iea.org] – Monthly Electricity Statistics

Renewables 2017 – Global Status Report

[ren21.net] –

Price of Hydrogen Production via Electrolysis

[Source]

It was the old idea of the hydrogen economy (first use term: 1970): intermittent renewable electricity in –> hydrogen out. Storage problem solved. The idea got discredited for cost reasons. These reasons are no longer valid and hydrogen is making a come-back.

Basic fact: It takes about 50 kWh of electrical energy to electrolyze 9 liters of water to obtain 1 kg of Hydrogen.

Price hydrogen from electrolysis: 2-3 euro/kg

Energy density (MJ/kg):
Hydrogen: 143
LNG: 56
Diesel: 48
Gasoline: 46

[carboncommentary.com] – Hydrogen made by the electrolysis of water is now cost-competitive
[wikipedia.org] – Hydrogen Economy
[opwegmetwaterstof.nl] – Veel wegen leiden naar waterstofeconomie

IEA Renewables 2017

[iea.org] – Renewables 2017

The Forgotten Green Energy Champion Chile

Today Chile gets 45% of its electricity from renewable sources and intends to increase this to 90% by 2050… or earlier.

[wikipedia.org] – Renewable energy in Chile
[nytimes.com] – Chile’s Energy Transformation Powered by Wind, Sun and Volcanoes
[independent.co.uk] – “Chile’s electricity should be 100% renewable by 2040”
[collective-evolution.com] – The ‘Uber of Recycling’ Igniting Green Revolution in Chile

Read more…

Hans-Josef Fell – Das Tempo der Energiewende

German language video.

Hans-Josef Fell is one of the most important advocats of renewable energy in Germany. He was the man behind “feed-in tariffs”, introduced in Germany in 2000 and and set an example for the rest of the world.

Fell has bad news: the energy transition in Germany is stalling. Were in 2000, 7 GW of new capacity was installed, in the last few years it has fallen back to 1.5 GW. Big oil, coal and lignite producers are successful in slowing down the transition.

[wikipedia.org] – Hans-Josef Fell

Renewable Energy Skeptic David MacKay

[wikipedia.org] – David J. C. MacKay
[withouthotair.com] – David MacKay official site
[inference.org.uk] – MacKay’s magnum opus “Sustainable Energy — without the hot air” (pdf, 12MB)

Post Navigation