Great to finally see Ruff integrated!

Thank you for publishing this! Quick feedback: Clicking on markers in the map of the "Company operations" tab doesn't seem to do anything (I've tried both Safari and Chrome)

All data is publicly available: Industrial Emissions Portal (industry.eea.europa.eu); ENTSO-E (transparency.entsoe.eu); linking between databases (hdl.handle.net/1814/94107). 8/8

Where does this leave us? Oltenia's power plants report suspiciously low emission factors per unit of coal burned. This can be driven by inaccurate reporting of emissions or energy inputs. Emissions per unit of electricity generated appear to be more in line with averages across Europe. 7/

This second chart presents emission factors per unit of energy output. Compared to tCO2 per TJ, Oltenia's power plants have less extreme emission factors in terms of tCO2 per MWh. For example, Isalnita's emission factor is close to or above the average emission factor in most years. 6/

Although electricity production is not reported in the Industrial Emissions Portal, it can be obtained from the ENTSO-E transparency platform (transparency.entsoe.eu) and linked back to the reporting in the Industrial Emissions Portal. 5/

Oltenia claims that this is due to low-quality lignite combusted in its plants. @occrp.org rightly points out that low-quality lignite should result in higher emission factors "per unit of energy produced". However, the article only shows emissions per unit of energy input and not energy output. 4/

The chart presents the mean and 95% confidence interval of the 74 power plants reporting lignite energy inputs since 2016. Although there is a similar trend on average, Oltenia's power plants appear to have some of the lowest emission factors across Europe. 3/

The analysis compares trends in country-level average emission factors in tCO2 per TJ of lignite. Can we observe similar differences at the plant-level? For this, I dug into the reporting of lignite-fired power plants in the Industrial Emissions Portal provided by the @eea.europa.eu

These are calculated using generation data from the ENTSO-E transparency platform. With @eui-eu.bsky.social, we have recently published a linking between the Industrial Emissions Portal, the ENTSO-E and the EU ETS Union Registry hdl.handle.net/1814/94107

I just checked if the emission factors expressed as tCO2 per MWh show a similar pattern (albeit noisier).

Does the reporting of energy content per unit of coal the Industrial Emissions Portal account for the specific coal used in these plants? In other words, is the trend driven by emissions or energy input reporting?

It would be interesting to see if these papers take a design-based view on inference. From @cdechaisemartin.bsky.social's difference-in-differences book: "We do not adopt the design-based perspective, as it seems unrealistic in many natural experiments." papers.ssrn.com/abstract=448...

Thought provoking, thanks. Nothing I can fundamentally disagree with but I understand people getting triggered by the headline's timing and the essay's somewhat one-sided framing (measuring progress by the change in IEA GHG projections seems rather generous, for example)

It's great! I was very pleased to find the rapidfuzz extension (query.farm/duckdb_exten...). This can come in super handy for record linkage bsky.app/profile/cata...