Assertion Supported AI assessment confidence: 95% certainty 3/5 debate potential 1/5

Horne: Commercial closed-loop pilot in Germany requires 80 kilometers of drilling

Dr. Roland Horne · Going deep on next-gen geothermal · Jun 27, 2024 · at 21:38

Dr. Roland Horne discusses the immense drilling volume required to make closed-loop geothermal systems deliver commercial power.

0:00 / 0:17exact quote · 17.7s

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“So the system, they're drawing a closed loop system, sort of the first commercial pilot or whatever in Germany right now, which they're planning. 80 kilometers of holes, if I remember that number correctly, which is feasible but quite expensive.”

quote is from the automated transcript, cleaned for reading: filler sounds and stutters are removed, nothing is rephrased. names can be misheard (the analysis reads context, assessments check outside sources). how →

The claim, plainly

A commercial closed-loop geothermal pilot project under development in Germany plans to drill approximately 80 kilometers of boreholes.

a quote alone can be ambiguous, so this restates it with the references and context of the conversation around it resolved. AI-written; the tape below the player is the source.

Assessment

The commercial closed-loop geothermal pilot facility under development in Germany as of mid-2024 is Eavor Technologies' Geretsried project in Bavaria. Technical specifications published by the European Investment Bank (EIB), engineering contractor SPIE, and Eavor Deutschland confirm that each closed loop consists of two deep vertical wells branching into 12 lateral horizontal sections, totaling approximately 80 kilometers of borehole drilling per loop (with four loops totaling roughly 320 kilometers across the full planned installation). Dr. Roland Horne's offhand citation of '80 kilometers of holes' accurately describes the planned drilling scale of the pilot loop.

European Investment Bank (EIB) project documentation (published May 2024, updated October 2024) indicates each loop requires approximately 80 to 90 km of drilling.
SPIE operational management contract announcement (May 2025) specifies two 4,500-meter vertical wells and 12 parallel horizontal sections of 3,000–3,500 meters totaling approximately 80 km of borehole per loop.
Eavor Deutschland Head of Communications Alexander Land confirmed in August 2025 that the Geretsried plant design planned four loops totaling ~320 km, or 80 km per loop.

Checked against

[1] thinkgeoenergy.com [2] eib.org [3] eib.org [4] eib.org [5] energyglobal.com [6] geothermalcanada.org [7] eavor.com [8] eavor.com

Eavor Geretsried 80 kilometers OR 80 km drilling OR boreholes Eavor Geretsried borehole length kilometers OR km Eavor loop Geretsried total drilling length km "80 kilometers" OR "80 km" "Geretsried" "Eavor"

assessed as of 2026-09-02

This assessment is an AI reading of a public statement, made against the cited references with the confidence shown. It can be wrong. The quote, the tape and the references are all on this page; if something is off, use report an error below. full disclaimer →

Mentioned

closed loop system Germany

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Horne: Commercial closed-loop pilot in Germany requires 80 kilometers of drilling

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