{
  "slug": "solarpflicht-niedersachsen",
  "title": "Solarpflicht Niedersachsen 2026 – PV-Pflicht bei Neubau, Dachsanierung und Parkplatz (§ 32a NBauO)",
  "topic_area": "bau-sanierungsrecht",
  "topic_label": "Bau- und Sanierungsrecht",
  "language": "de",
  "legal_status": "in_force",
  "valid_from": "2025-01-01",
  "valid_to": null,
  "last_reviewed": "2026-07-13",
  "factcheck_status": "ok",
  "authority_level": "A",
  "license": "CC-BY-4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/deed.de",
  "attribution": "Nexvyra (https://nexvyra.de, Wikidata Q139919900)",
  "wikidata_subjects": [],
  "summary": "In Niedersachsen gilt seit dem **1. Januar 2025** eine landesweite Photovoltaik-Pflicht nach **§ 32a der Niedersächsischen Bauordnung (NBauO)**. Sie greift bei der **Errichtung jedes Gebäudes** – Wohn- wie Nichtwohngebäude – mit einer…",
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    "markdown": "https://nexvyra.de/fakten/solarpflicht-niedersachsen.md",
    "json": "https://nexvyra.de/fakten/solarpflicht-niedersachsen.json"
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      "url": "https://www.mw.niedersachsen.de/startseite/bauen_wohnen/bauordnungsrecht_bautechnik_und_gebaudeenergierecht/haufig_gestellte_fragen/haufig-gestellte-fragen-217309.html",
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    },
    {
      "url": "https://www.klimaschutz-niedersachsen.de/themen/strom/photovoltaik/PV-Pflicht.php",
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      "url": "https://www.klimaschutz-niedersachsen.de/_downloads/Veranstaltungsdokumente/Vortrag_PV-Pflicht_2025-05-05-neu.pdf",
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      "claim": "Rechtsgrundlage: § 32a NBauO (Niedersächsische Bauordnung)",
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      "claim": "Auslöser Neubau: Errichtung eines Gebäudes mit Dachfläche ≥ 50 m²",
      "label": "Auslöser Neubau",
      "value": "Errichtung eines Gebäudes mit Dachfläche ≥ 50 m²",
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      "claim": "Mindestbelegung: mindestens 50 % der Dachfläche mit PV (50/50-Regel)",
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      "claim": "Auslöser Bestand: Aufstockung, Anbau oder Erneuerung der Dachhaut bis zur wasserführenden Schicht (§ 32a Abs. 2)",
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      "claim": "Pflicht Parkplätze/Parkdecks: offen, mit mehr als 25 Einstellplätzen (§ 32a Abs. 3 Satz 1)",
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        "has_evidence_hash": false,
        "hash_status": "pending",
        "evidence_weight": 0.25,
        "semantic_clean": true,
        "semantic_weight": 1.0,
        "consistent_across_formats": false,
        "consistency_weight": 0.7,
        "legal_status": "",
        "status_weight": 0.5
      },
      "trust_score": 0.622
    },
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      "claim": "Verantwortlich: Bauherrin/Bauherr (Erfüllung auch durch Verpachtung an Dritte möglich)",
      "label": "Verantwortlich",
      "value": "Bauherrin/Bauherr (Erfüllung auch durch Verpachtung an Dritte möglich)",
      "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
      "source_authority": "C",
      "confidence": "medium",
      "last_verified": "2026-07-13",
      "jurisdiction": "DE-NI",
      "unit": "text",
      "valid_from": "2025-01-01",
      "valid_to": null,
      "valid_to_status": "open_ended",
      "evidence": {
        "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
        "locator": "siehe Quelle (voris.wolterskluwer-online.de)",
        "retrieved_at": "2026-07-13",
        "source_hash": null,
        "hash_status": "pending"
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      "inline_source_label": "voris",
      "topic_slug": "solarpflicht-niedersachsen",
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        "authority_weight": 0.3,
        "freshness_days": 1,
        "freshness_weight": 1.0,
        "has_locator": true,
        "locator_weight": 1.0,
        "has_evidence_hash": false,
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        "semantic_clean": true,
        "semantic_weight": 1.0,
        "consistent_across_formats": false,
        "consistency_weight": 0.7,
        "legal_status": "",
        "status_weight": 0.5
      },
      "trust_score": 0.622
    },
    {
      "claim": "Wirtschaftlichkeitsschwelle: Amortisationszeit bis 20 Jahre gilt als vertretbar (KEAN/Ministerium)",
      "label": "Wirtschaftlichkeitsschwelle",
      "value": "Amortisationszeit bis 20 Jahre gilt als vertretbar (KEAN/Ministerium)",
      "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
      "source_authority": "C",
      "confidence": "medium",
      "last_verified": "2026-07-13",
      "jurisdiction": "DE-NI",
      "unit": "years",
      "valid_from": "2025-01-01",
      "valid_to": null,
      "valid_to_status": "open_ended",
      "evidence": {
        "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
        "locator": "siehe Quelle (voris.wolterskluwer-online.de)",
        "retrieved_at": "2026-07-13",
        "source_hash": null,
        "hash_status": "pending"
      },
      "inline_source_label": "voris",
      "topic_slug": "solarpflicht-niedersachsen",
      "trust_factors": {
        "authority": "C",
        "authority_weight": 0.3,
        "freshness_days": 1,
        "freshness_weight": 1.0,
        "has_locator": true,
        "locator_weight": 1.0,
        "has_evidence_hash": false,
        "hash_status": "pending",
        "evidence_weight": 0.25,
        "semantic_clean": true,
        "semantic_weight": 1.0,
        "consistent_across_formats": false,
        "consistency_weight": 0.7,
        "legal_status": "",
        "status_weight": 0.5
      },
      "trust_score": 0.622
    },
    {
      "claim": "Anrechnung Solarthermie: vorhandene/geplante Solarthermie auf demselben Dach reduziert die Pflichtfläche",
      "label": "Anrechnung Solarthermie",
      "value": "vorhandene/geplante Solarthermie auf demselben Dach reduziert die Pflichtfläche",
      "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
      "source_authority": "C",
      "confidence": "medium",
      "last_verified": "2026-07-13",
      "jurisdiction": "DE-NI",
      "unit": "text",
      "valid_from": "2025-01-01",
      "valid_to": null,
      "valid_to_status": "open_ended",
      "evidence": {
        "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
        "locator": "siehe Quelle (voris.wolterskluwer-online.de)",
        "retrieved_at": "2026-07-13",
        "source_hash": null,
        "hash_status": "pending"
      },
      "inline_source_label": "voris",
      "topic_slug": "solarpflicht-niedersachsen",
      "trust_factors": {
        "authority": "C",
        "authority_weight": 0.3,
        "freshness_days": 1,
        "freshness_weight": 1.0,
        "has_locator": true,
        "locator_weight": 1.0,
        "has_evidence_hash": false,
        "hash_status": "pending",
        "evidence_weight": 0.25,
        "semantic_clean": true,
        "semantic_weight": 1.0,
        "consistent_across_formats": false,
        "consistency_weight": 0.7,
        "legal_status": "",
        "status_weight": 0.5
      },
      "trust_score": 0.622
    },
    {
      "claim": "Teilbelegung: Bei < 50 % geeigneter Fläche entfällt die Pflicht nicht vollständig – die geeignete Teilfläche ist zu belegen",
      "label": "Teilbelegung",
      "value": "Bei < 50 % geeigneter Fläche entfällt die Pflicht nicht vollständig – die geeignete Teilfläche ist zu belegen",
      "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
      "source_authority": "C",
      "confidence": "medium",
      "last_verified": "2026-07-13",
      "jurisdiction": "DE-NI",
      "unit": "percent",
      "valid_from": "2025-01-01",
      "valid_to": null,
      "valid_to_status": "open_ended",
      "evidence": {
        "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
        "locator": "siehe Quelle (voris.wolterskluwer-online.de)",
        "retrieved_at": "2026-07-13",
        "source_hash": null,
        "hash_status": "pending"
      },
      "inline_source_label": "voris",
      "topic_slug": "solarpflicht-niedersachsen",
      "trust_factors": {
        "authority": "C",
        "authority_weight": 0.3,
        "freshness_days": 1,
        "freshness_weight": 1.0,
        "has_locator": true,
        "locator_weight": 1.0,
        "has_evidence_hash": false,
        "hash_status": "pending",
        "evidence_weight": 0.25,
        "semantic_clean": true,
        "semantic_weight": 1.0,
        "consistent_across_formats": false,
        "consistency_weight": 0.7,
        "legal_status": "",
        "status_weight": 0.5
      },
      "trust_score": 0.622
    },
    {
      "claim": "Befreiungsverfahren: gesetzlich nicht vorgesehen; Ausnahme wirkt kraft Gesetzes, Dokumentation empfohlen",
      "label": "Befreiungsverfahren",
      "value": "gesetzlich nicht vorgesehen; Ausnahme wirkt kraft Gesetzes, Dokumentation empfohlen",
      "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
      "source_authority": "C",
      "confidence": "medium",
      "last_verified": "2026-07-13",
      "jurisdiction": "DE-NI",
      "unit": "text",
      "valid_from": "2025-01-01",
      "valid_to": null,
      "valid_to_status": "open_ended",
      "evidence": {
        "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
        "locator": "siehe Quelle (voris.wolterskluwer-online.de)",
        "retrieved_at": "2026-07-13",
        "source_hash": null,
        "hash_status": "pending"
      },
      "inline_source_label": "voris",
      "topic_slug": "solarpflicht-niedersachsen",
      "trust_factors": {
        "authority": "C",
        "authority_weight": 0.3,
        "freshness_days": 1,
        "freshness_weight": 1.0,
        "has_locator": true,
        "locator_weight": 1.0,
        "has_evidence_hash": false,
        "hash_status": "pending",
        "evidence_weight": 0.25,
        "semantic_clean": true,
        "semantic_weight": 1.0,
        "consistent_across_formats": false,
        "consistency_weight": 0.7,
        "legal_status": "",
        "status_weight": 0.5
      },
      "trust_score": 0.622
    },
    {
      "claim": "Vollzug: untere Bauaufsichtsbehörde (anlassbezogene Prüfung)",
      "label": "Vollzug",
      "value": "untere Bauaufsichtsbehörde (anlassbezogene Prüfung)",
      "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
      "source_authority": "C",
      "confidence": "medium",
      "last_verified": "2026-07-13",
      "jurisdiction": "DE-NI",
      "unit": "text",
      "valid_from": "2025-01-01",
      "valid_to": null,
      "valid_to_status": "open_ended",
      "evidence": {
        "source_url": "https://voris.wolterskluwer-online.de/browse/document/f056c189-2143-307d-9a85-eb5d10b7fa52",
        "locator": "siehe Quelle (voris.wolterskluwer-online.de)",
        "retrieved_at": "2026-07-13",
        "source_hash": null,
        "hash_status": "pending"
      },
      "inline_source_label": "voris",
      "topic_slug": "solarpflicht-niedersachsen",
      "trust_factors": {
        "authority": "C",
        "authority_weight": 0.3,
        "freshness_days": 1,
        "freshness_weight": 1.0,
        "has_locator": true,
        "locator_weight": 1.0,
        "has_evidence_hash": false,
        "hash_status": "pending",
        "evidence_weight": 0.25,
        "semantic_clean": true,
        "semantic_weight": 1.0,
        "consistent_across_formats": false,
        "consistency_weight": 0.7,
        "legal_status": "",
        "status_weight": 0.5
      },
      "trust_score": 0.622
    }
  ],
  "generated_at": "2026-07-14T05:18:35Z"
}