Good find, although I am dubious of the source.
From the article: Ukraine has ramped up its drone attacks on Russian oil and gas facilities and pipelines since August, with Bloomberg estimating that
roughly one in three Russian refineries has been hit.
One way to measure strikes effectiveness include observing volume and revenue of oil shipped by Russia. For example, one source states:
1. "In September, Russia’s monthly fossil fuel export revenues saw a 4% month-on-month decline to EUR 546 mn per day — the lowest they have been since the full-scale invasion of Ukraine."
2. "In September 2025, Russian tax revenues from oil & gas exports recorded a 26% year-on-year reduction. However, there was a 15% rebound month-on-month, driven chiefly by changes in the timing of Export Duty collections, rather than by significant increases in production or upstream taxes. Gas revenues remain especially weak, with export volumes to Europe sharply curtailed and domestic regulated prices keeping margins low."
3. "Russian revenues in September 2025 are half of what they were in September 2022 — despite volumes witnessing a mere 5% decline, in this same comparison window."
https://energyandcleanair.org/september-...sanctions/
Putin is learning Russia is not immune to a war of attrition.