Bachelor of Engineering, Master of Science 📚 Junior Researcher at LUT University's Solar Economy research group 👨🏻💻 Techno-economic modelling of 100% renewable energy systems ☀️💨💧🌱 linktr.ee/dkeiner
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The most annoying part of being a researcher: Investing hours in adapting research proposals (for paying your own salary) to specific requirements and layouts of funders over and over again, so that a REVIEWER can kill it because he/she doesn‘t like it (w/o getting reviewer reports after rejection)🤦🏻♂️
"huge solar PV demand for Africa ahead" - that's what we find since year. The energy system solution for Africa is largely PV+battery as the core & most important backbone. Additional articles would be these ones: www.cell.com/iscience/ful... ; www.cell.com/joule/fullte... ; doi.org/10.1016/j.eg...
😎☀️Well this is good news! There is a huge potential ahead for Africa 🌍 (and South Asia): doi.org/10.1016/j.so... @christianonre.bsky.social
#Trump climate report has so many misleading information and false claims that it takes forever to read the entire #factcheck. @carbonbrief.org, well done 👍🏻
#ThrowbackThursday #TBT ☀️🍃⚡️ Over one year ago our study on the Seychelles introducing a new EnergyPLAN-based optimisation tool was published. Check it out (it‘s #OpenAccess) 👇🏻
It seems that in the vastness of your intelligence the ability to read and the difference between tidal energy and wave energy got lost. You just proved yourself that a troll is what you are. Sad. I was hoping for top quality trolling here.
„Potential“, „can“, „could“. Come on, troll, you can do better than Google AI. Give me at least something real to „educate myself“. The quality of trolls was definitely better on X…
Says the account which only purpose it is to troll without any science- or evidence-based arguments adding nothing which would be helpful to open a serious discussion. Please stop commenting unless you have something valuable to say. Thanks, and have a good day.
See our other column articles: tinyurl.com/lutcolumn
📰🌍🚀 Wave power shows strong potential as a renewable source, especially for coastal and island regions. Complementary to solar PV worldwide, it could support hybrid systems. Islands may gain the most from combining wave power with solar PV. @lut.fi @christianonre.bsky.social
Meine ursprüngliche Frage war auch eher rhetorischer Natur.
Logisch. Ich meinte dass es offenbar einfach ist zu messen. Die flächendeckende Installation von smart metern ist m.E. keine Hürde und könnte in wenigen Jahren umgesetzt werden. Bei meinen Eltern war das für eine Balkon-PV im nullkommanix erledigt.
Jeder Wechselrichter und jedes battery management system weiß in welcher Stunde wie viel Strom eingespeist oder vom Netz bezogen wird. Wenn PV schon da ist, ist das überhaupt kein Problem zu wissen. Stündlicher Verbrauch ohne PV ok, Problem falls kein smart meter installiert ist.
Bei den Preisen? Entweder beschweren sich Leute zu viel oder nur die Gutverdiener kaufen Elektroautos. Denke eher zweiteres.
Ich frage mich warum es in Deutschland immer noch keine flächendeckenden stündliche Strompreise gibt? Einspeisung ins Netz zu den selben Kosten -> Vergütung wird nicht komplett gestrichen, aber unattraktiv zu Peakzeiten.
Please always post source link(s).
This month‘s column was featured by Ashish Gulagi. @christianonre.bsky.social @lut.fi Check out our other column articles: sites.google.com/view/lutuniv...
📰🌍🚀 The role of solar PV in Indonesia will extend; it will also include the production of e-fuels for hard-to-abate segments as alternative to land-intensive biofuel production. Various scenarios show the cost-competitiveness of solar PV in Indonesia’s renewable energy transition.
Gibt es auch Zahlen zu Speichern pro Monat, vor allem Batterien?
Cost-competitiveness for green hydrogen using intermittent renewable energy sources remains a significant challenge. Researchers have shown that considerable cost reductions can be achieved by optimizing plant control and design based on specific hydrogen demand targets and local weather conditions.
Redox-Flow wird wohl nicht mit Lithium und vor allem Natrium-Ionen Batterien mithalten können. Selbst im stationären Speichermarkt werden die die Nase vorn haben.
1/ New research @lut.fi @dominikkeiner.bsky.social doi.org/10.1088/1748... presents a quantification of the portfolio-wide area intensity for carbon dioxide removal (CDR) integrated in an energy-industry system.
📰🌍🚀 To address the variability of renewable energy for a stable supply, 22 distinct types of flexibility options are found in 100% renewable energy systems research articles, categorized into power-to-X, energy storage, demand response, transmission and distribution grids, and curtailment. @lut.fi
What effect could the rotation practice in forest management have? Here they razor trees for timber. What if Finland would change to continuous tree cover / selection-based management?
📰🌍🚀 The WEO @iea.org has been a report on energy statistics and guiding future energy supply and demand developments. An examination of these reports indicates that even the progressive WEO scenarios vastly underestimate the growth of #RE, especially PV. @christianonre.bsky.social shorturl.at/YnORe
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(Hello darkness, my old friend.) #phd #phdstudent #academicsky
As if we wouldn‘t continuously check during the holiday 😅
Bitte Artikel mir #paywall gerne auch so kennzeichnen.
1/ New research @UniLUT @UCNZ @ashishgulagi doi.org/10.1016/j.en... exploring the techno-economic impacts of #WavePower in #NewZealand to achieve #NetZero goals by 2050 & opportunity to export #efuels to the Pacific islands.
📰🌍🚀 The Caribbean stands to benefit from low-cost renewable energy solutions driving a clean energy transition. With solar PV as the cornerstone technology, the region is poised to transition to a solar-to-X Economy to achieve carbon neutrality. @christianonre.bsky.social shorturl.at/LmNom
🤔🧐 I have started a survey on @linkedin.com related to the way citations for methods and data are restricted by word limits in journals. Please let me know your view, and thanks for sharing 😉 www.linkedin.com/posts/domini...
🤔🧐 I have started a survey on @linkedin.com related to the way citations for methods and data are restricted by word limits in journals. Please let me know your view, and thanks for sharing 😉 www.linkedin.com/posts/domini...
In den vergangenen Tagen gab es Messerangriffe in Bremen, Lübeck, Ratingen, Erfurt, mehrere in Dortmund und in Berlin. Teilweise mit Toten, mit Schusswechsel mit der Polizei, willkürliche Opfer. Von keinem hast du wahrscheinlich gehört. Rate mal, warum. www.volksverpetzer.de/analyse/mani...
🔥New paper published assessing yield of rooftop #PV systems compared to ground-mounted systems for easier energy system model integration 🔥 Prosumer viability is not at risk for up to 18% lower yield! 👇🏻 Paper follows my presentation at EU PVSEC. Thanks to WihurinRahasto.
📰🌍🚀 Hard-to-abate segments in the energy transition require electricity-based e-methanol in large quantities. The transport costs could be a key factor in determining the best locations for future green e-methanol projects. @christianonre.bsky.social www.pv-magazine.com/2025/02/11/t...
Cost-wise not really. That is why DESERTEC did not really work out. Shipping is extremely cheap. Huge transm. lines are also not socially accepted, see e.g. the problems in GER with North-South lines. Cheap e-fuels from the sunbelt will come by ship. Plus no geographic ties: doi.org/10.1016/j.rs...
Then why doing a PhD in the first place? Doctoral education trains us for academic research, so should be done if a career in academia is the choice.
📰 🌍 🚀 In a new monthly column for pv magazine, the Lappeenranta-Lahti University of Technology (LUT) describes how carbon dioxide removal may support reaching climate targets from a portfolio perspective. @christianonre.bsky.social @michael-sterner.bsky.social www.pv-magazine.com/2025/01/21/c...
New research on CDR portfolios available. Check out the detailed 🧵from @christianonre.bsky.social below 👇🏻
1/ New research @UniLUT @OTH_Regensburg @dominikkeiner.bsky.social @michael-sterner.bsky.social doi.org/10.1016/j.ij... presents techno-economic assessment of #CDR from a portfolio perspective for 1.5C and 1.0C climate targets until 2100
😂
They are on the way ☺️ bsky.app/profile/domi...
Please distinguish between fossil CCS and renewables-powered, post-fossil CDR.
Klar. Einfach sinnlos drauf losspeichern wird nicht hilfreich sein.
How are going to estimate the future of very complex system with simplified models? Of course there is uncertainty, which is why scenarios and sensitivity analyses are so important. But with simplified models we miss complex trade-offs and synergies. @christianonre.bsky.social
Energiespeicher wäre die Lösung die jetzt einen rollout braucht, und zwar massiv.
In most cases yes. We will see troubles in highly populated areas, namely small islands and especially South Asia. Europe is on the edge, but much can be traded within Europe. It‘s not yet fully clear for post-2050 developments.
You are in invited to contribute own research on the topic or share insights from other research you deem convincing.
Do you have any methodologically sound justification for that?
It is. Shipping charged batteries won‘t happrn 😉
These fuels are already developed today. If society aims for cost-optimised solutuons e-fuel trading will play a major role to supply remote islands, and countries with high population density without enough area.
Not really. There will be the need for trading e-fuels, e-methanol, e-ammonia. Plus growing weslth in developing countries fire consumption. Though ships can run on clean e-methanol.
Here's a dye called Nile blue. It doesn't take much to stop a great deal of visible light from passing through. CO₂ acts in a different part of the spectrum (infra-red rather than visible), but basically does a similar thing.
Great visualisation! Do you have the copyright / can it be re-used?
☀️->🔋 Sodium-ion batteries on the rise. ↗️ @christianonre.bsky.social
🔥 This video should be seen by every human on Earth! 🔥 @christianonre.bsky.social @amuehlbauer.bsky.social youtu.be/Vl6VhCAeEfQ?...
What you are showing is CCS („reduction“ of fossil emissions via negative emissions). CDR is the removal of CO2 in a 100% RE system, achieving net-negative emissions.
What is causing the atmospheric CO2 concentration to growth (light blue bars)? It is all the fossil CO2 emissions (brown) we dump into the atmosphere (a little LUC too), with the land (green) & ocean (dark blue) sinks struggling to keep up. More figures: robbieandrew.github.io/GCB2024/
Where can we find the raw data?
🔥New paper published assessing yield of rooftop #PV systems compared to ground-mounted systems for easier energy system model integration 🔥 Prosumer viability is not at risk for up to 18% lower yield! 👇🏻 Paper follows my presentation at EU PVSEC. Thanks to WihurinRahasto.
Zumindest in Sachen CO2 haben wir alle Lösungen parat um die planetare Grenze von 1.0 Grad einzuhalten: doi.org/10.1016/j.en... doi.org/10.1371/jour...
🔥 New research available: doi.org/10.1016/j.en... Please find a detailed 🧵 on the findings 👇🏻 @christianonre.bsky.social Thanks to the Jenny and Antti Wihuri Foundation for the grant enabling this research!
Wie ist die Erfahrung hinsichtlich der Teilnehmenden? Ich habe oft das Gefühl dass zu solchen Veranstaltungen nur Leute kommen, die sowieso nicht mehr überzeugt werden müssen, da sie bereits mit an board sind.
Great work by SwimSol! There is a huge potential ahead: doi.org/10.1016/j.ap... www.linkedin.com/posts/swimso...
1/ New research @UniLUT doi.org/10.1016/j.en... compares techno-economics and life-cycle impacts of local e-polyethylene in Germany, Belgium/Netherlands, Finland and Spain with imports across the supply chain from lowest renewable cost regions of Morocco and Chile.
Söder konfrontierte Habeck mit einigen Vorwürfen zur Atomkraft. Dieser konterte unter großem Beifall aus dem Netz mit vielen Fakten. Wir haben Habecks Aussagen einem Faktencheck unterzogen: Er hat fast komplett Recht. www.volksverpetzer.de/faktencheck/...
Auch gibt es bessere Lösungen als gasförmige Speicherung. CO2 muss in solide Materialien gewandelt/gebunden werden. Die Sicherheit von gasförmiger Speicherung ist keineswegs erprobt, bekannt, oder sichergestellt. @bmwk.de @gruene.de
Carbon dioxide removal (CDR) wird ein wichtiges Instrument zur Einhaltung des 1,5 Grad Ziels sein, aber nur weil wir bereits mehr CO2 ausgestoßen haben als wir dürften und zur Komp. von Industrie. Deshalb brauchen wir netto negative Emissionen. Fossiles CCS aus zB Gaskraftwerken ist KEINE Lösung.
1/ New research @UniLUT @hasretshn.bsky.social doi.org/10.1038/s414... examines the net energy performance of 9 #decarbonisation global energy transition scenarios until 2050 by applying the systemwide #EROI at the electricity level.
🔥 New research on electricity-based carbon fibres, enabling an unique carbon capture and utilisation/sequestration (CCUS) approach. @christianonre.bsky.social
Mibet launches floating PV array system for offshore applications www.pv-magazine.com/2023/12/21/m... - substantial potential for offshore floating PV, see cases in the #Caribbean: ieeexplore.ieee.org/document/102... and the #Maldives: doi.org/10.1016/j.ap...
New research on single-axis tracking solar PV ☀️ backtracking: doi.org/10.1016/j.so... Thanks to Jenny and Antti Wihuri foundation for the valuable grant. The research is available in #openaccess. @christianonre.bsky.social