The Poznan Test: Why Innargi's Usufruct Agreement Is Europe's Real Geothermal Heating Benchmark By Alphaxioms Geothermal Intelligence | June 6, 2026 For months, the geothermal heating world has watched Germany—Geretsried, Erfurt, Berlin. But a quieter, potentially more significant story has been unfolding in western Poland. On May 28, 2026, Innargi, the Danish subsurface developer backed by AP Pension and Hatch, signed a usufruct agreement with the City of Poznan for two geothermal heating plant sites. The press release was brief. The implications are not. This is not a pilot. It is not a research project. It is a commercial-scale urban heating play in one of Europe's most coal-dependent economies. And the timeline, the partners, and the geology all point to a single question: If Innargi makes Poznan work, how many cities follow? Part I: What Was Actually Signed The agreement covers two locations: Chartowo in eastern Poznan and Kopanino in western Poznan. The Chartowo sit...
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