OT_050: Trommsdorff et al. (2025) — Agri-Photovoltaics: A Guide for Germany (Fraunhofer ISE)

OT_050: Trommsdorff et al. (2025) — Agri-Photovoltaics: A Guide for Germany (Fraunhofer ISE)

Source

https://www.ise.fraunhofer.de/en/publications/studies/agrivoltaics-opportunities-for-agriculture-and-the-energy-transition.html — original source (opens in a new tab; the file is not redistributed)

Summary

The Fraunhofer ISE Agri-Photovoltaik guide (2025) is Germany’s authoritative practitioner reference for agri-photovoltaics — the dual use (Doppelnutzung) of agricultural land to grow food and generate solar electricity simultaneously. It covers system types, land-use efficiency, crop compatibility, climate-resilience co-benefits, economics and German regulation. For Neobiome Intelligence it is ingested light: it is German-language with German cost/regulatory context, so only the transferable technology principles are taken — the headline being that agri-PV can raise total land-use efficiency by ~60–80%, the key to sharing scarce land across food, energy (and, per the low-carbon-construction concept, materials). It enriches the existing agro_pv technology page beyond the single Hungarian demonstration site previously cited.

Key claims

- claim: "Agri-photovoltaics (Agri-PV / Doppelnutzung) is the simultaneous use of the same agricultural land for crop production and solar electricity generation, preserving soils for food production while adding renewable generation."
  source_location: "Einleitung / §1 (German text)"
- claim: "Agri-PV can increase land-use efficiency by approximately 60–80% compared with single use of the land (i.e. the combined food + energy yield per unit area corresponds to a land-equivalent ratio of roughly 1.6–1.8)."
  source_location: "§Landnutzungseffizienz (p.~)"
- claim: "Open agri-PV systems fall into two main types: ground-level / near-ground systems (mounting height < 2.1 m — e.g. vertical bifacial rows between cropped strips; cheaper, more storm-resistant, with flexible module orientation) and elevated / high-clearance overhead systems (crops and farm machinery operate beneath the raised modules)."
  source_location: "§Systemkonzepte (bodennah vs hoch aufgeständert; ~p. with 'Bodennahe Aufständerung < 2,1 m')"
- claim: "Worldwide agri-PV deployment grew rapidly, from about 5 MWp in 2012 to at least 14 GWp in 2021 (China alone over 12 GWp), supported increasingly by bifacial PV modules."
  source_location: "§Markt / deployment figures"
- claim: "Partial shading from agri-PV can provide a climate-resilience co-benefit for crops, buffering against heat and drought; the guide links this to rising solar irradiation and shifting rainfall patterns."
  source_location: "§Klima / Resilienz"

Neobiome Intelligence relevance

• agro_pv technology — authoritative principles. OT_050 supplies the land-use-efficiency framing and system taxonomy that the agro_pv page previously lacked (it cited only the Hungarian demo via Interview II [INT_002]): the ~60–80% land-use-efficiency gain, the ground-level (<2.1 m) vs elevated system split, and the dual-use principle OT_050.
• D01 ↔ D02 — the land-sharing lever. Agri-PV is the technology that resolves part of the food-vs-energy-vs-materials land tension flagged in low_carbon_construction: it lets the same hectare carry food and generation, raising effective land productivity ~1.6–1.8× — directly relevant to a land-constrained self-sufficient community OT_050.
• ⚠ Scope: German-language guide with German cost and regulatory content, not transcribed — NZ agri-PV installed cost, consent pathway and crop-specific yield trade-offs remain a gap (advances RT_108; the NZ-specific economics are still needed).

Research targets

Research gaps

• NZ-specific agri-PV: installed cost (NZD/kWp at the ground-level vs elevated configurations), consent pathway (rural-zone, productive-land rules), and crop-specific yield trade-offs under NZ irradiance — OT_050 gives the German principles; the NZ economics/regulatory layer is the gap (folds into RT_108).

Connections

Links to

Concepts (1): Low-Carbon & Bio-Based Construction

Technologies (1): Agro-PV (Dual-Use Solar + Agriculture)

Referenced by

Sources (4): LIT_113 · LIT_114 · LIT_115 · OT_202

EDT domains (2): D01: Renewable Energy & Storage Systems · D02: Smart Food Systems & Agriculture

Technologies (1): Agro-PV (Dual-Use Solar + Agriculture)