Associate Professor at @AarhusUni Leading a Research Group on #Photovoltaics and #EnergySystemsModelling. Member of @ocenergia | She/her
Oct 4, 2022 • 14 tweets • 5 min read
How much time needs a solar panel to save as much CO2 by making green electricity as it cost to produce it?
Less than 5 years! (and its lifetime is >30 years)
This thread aims at debunking incorrect information recently published at @klimamonitor and @AvisenDanmark
The thread is a reflection on how IMPORTANT is to use up-to-date information for solar panels to avoid incorrect results!
May 18, 2022 • 17 tweets • 7 min read
We know that Europe is committed to reaching GHG neutrality by 2050. In our new paper in @Joule_CP, @nworbmot, @lisazeyen_lz and I explore the consequences of using different cumulative emissions (co2 budgets) to get there. A thread on what we learnt doi.org/10.1016/j.joul…1/N The motivation is simple. If Europe manages to use a lower carbon budget, its contribution to temperature increase will be lower and/or Europe could compensate for higher historical emissions than other regions.
Feb 17, 2022 • 15 tweets • 7 min read
There are several key assumptions (usually hidden as too technical) in many IAMs that have strong impacts on the results. The problem is that all of them overstress delayed climate action and CDR and undermine the economic benefits of early climate action, e.g with wind and solar
QUESTIONABLE ASSUMPTION 1⃣ Out-of-date exogenous costs for solar PV and wind together with poor modelling of flexibility options for these technologies underestimate their potential. This has been discussed previously
In our recent paper, we investigate the changes in hydro operation due to 1⃣ increasingly wind and solar penetration in the grid (tweets 1-7) and 2⃣ climate change impact on inflow (tweets 8-18). Results from a great MSc project by Ebbe Gøtske @iScience_CP doi.org/10.1016/j.isci…1/ First, a disclaimer. We use PyPSA-Eur-Sec to model the sector-coupled European Energy system. The model assumes perfect foresight for the entire year, which entails an optimal operation of hydro reservoirs. How realistic is that?
Mar 30, 2021 • 8 tweets • 3 min read
(22/n) An extra common question regarding PV (usually this is not a problem in IAMs): Do we have enough space? Yes, generating the world current electricity consumption with PV would require 0.3% of the available land. More detailed calculations confirm this result, see SI
(23/n) In some specific regions (highly populated) space could be a problem. Innovations at the plant level include also dual use of infrastructure/land: rooftop PV, agrivoltaics, floating PV, irrigation channels ... bbc.com/future/article… ingenioer.au.dk/en/current/new…
Mar 30, 2021 • 25 tweets • 13 min read
We have just published a perspective in @Joule_CP. Main message: Although underestimated by many models, solar PV has a large potential for mitigating climate change in the next decade which is key to remain on a path compatible with the Paris Agreement. authors.elsevier.com/a/1cpj3925JEG7…
As stated in the summary, our aim is to open a constructive discussion among PV experts, modellers, and policymakers regarding how to improve the representation of this technology in the models, and how to ensure that manufacturing and installation of solar PV can ramp up on time
