{"name": "Nant de Drance pumped storage power plant.", "slug": "nant-de-drance-pumped-storage-power-plant-e0c9a0df-d7a", "as_of": "2026-10-17T16:56:44.740098+00:00", "depth": "basic", "facts": {"name": {"value": "Nant de Drance pumped storage power plant.", "rights": "facts_only", "source": {"url": "https://www.nant-de-drance.ch/en/the-power-plant", "name": "www.nant-de-drance.ch", "origin": "live", "checksum": "ae56471a86ef4eb63e95bdab6923be814c86398cff42d7167c3e5211bf683df1", "observed_at": "2026-10-17T16:42:01.175680+00:00", "revision_id": "c5733dd7-a5d9-43c0-8da7-814d4d7afbfc", "published_at": null}, "locator": "/html/head/title", "claim_id": "b24f2eb0-a995-439b-abed-94856ecb0cb3", "modality": "reported", "confidence": 0.9, "valid_from": null, "attribution": "www.nant-de-drance.ch", "evidence_id": "d06e4732-f600-4b5f-b72a-64ccfc1ccd5e", "valid_until": null, "assertion_id": "e1dc3708-50e8-4f80-8d89-3df9112a81d1", "temporal_expression": "", "extraction_confidence": 0.9}, "scope": {"value": "The plant is rated at 900 MW and comprises six 150 MW pump turbines. Reported storage capacity is 20 million kWh; maximum turbine flow is 360 m\u00b3/s. The plant can switch from full-power pumping to full-power turbining in 5 minutes.", "rights": "facts_only", "source": {"url": "https://www.nant-de-drance.ch/en/the-power-plant", "name": "www.nant-de-drance.ch", "origin": "live", "checksum": "ae56471a86ef4eb63e95bdab6923be814c86398cff42d7167c3e5211bf683df1", "observed_at": "2026-10-17T16:42:01.175680+00:00", "revision_id": "c5733dd7-a5d9-43c0-8da7-814d4d7afbfc", "published_at": null}, "locator": "/html/body/main/div[2]/div[1]/div/div[1]/div[2]/p", "claim_id": "72dda6ac-1c4f-41d9-8337-f7cb4c9e4150", "modality": "reported", "confidence": 0.9, "valid_from": null, "attribution": "www.nant-de-drance.ch", "evidence_id": "91176739-63b4-411f-a987-2f657a00426f", "valid_until": null, "assertion_id": "b44c1ae4-cc2e-4a25-806a-486e8cdc7a30", "temporal_expression": "", "extraction_confidence": 0.9}, "sector": {"value": "Pumped-storage power generation and electricity storage.", "rights": "facts_only", "source": {"url": "https://www.nant-de-drance.ch/en/the-power-plant", "name": "www.nant-de-drance.ch", "origin": "live", "checksum": "ae56471a86ef4eb63e95bdab6923be814c86398cff42d7167c3e5211bf683df1", "observed_at": "2026-10-17T16:42:01.175680+00:00", "revision_id": "c5733dd7-a5d9-43c0-8da7-814d4d7afbfc", "published_at": null}, "locator": "/html/body/main/div[2]/div[1]/div/div[1]/div[1]/header/h1", "claim_id": "75e49461-d4bd-4374-bc2c-5d0dd2279ff6", "modality": "reported", "confidence": 0.9, "valid_from": null, "attribution": "www.nant-de-drance.ch", "evidence_id": "1ef20ec4-77f2-46f3-9834-da38511211c1", "valid_until": null, "assertion_id": "09fbe2ce-ab44-4fbc-80c6-4a8811d8bfa6", "temporal_expression": "", "extraction_confidence": 0.9}, "activity": {"value": "Water is pumped from the lower dam to the upper dam to store energy when electricity demand is low or renewable production exceeds demand; water passes through the turbines to meet peak demand.", "rights": "facts_only", "source": {"url": "https://www.nant-de-drance.ch/en/the-power-plant", "name": "www.nant-de-drance.ch", "origin": "live", "checksum": "ae56471a86ef4eb63e95bdab6923be814c86398cff42d7167c3e5211bf683df1", "observed_at": "2026-10-17T16:42:01.175680+00:00", "revision_id": "c5733dd7-a5d9-43c0-8da7-814d4d7afbfc", "published_at": null}, "locator": "/html/body/main/section[1]/div/div/div/div[1]/div[2]/p", "claim_id": "7083a4e5-c22b-469b-9545-00fece5f00c6", "modality": "reported", "confidence": 0.9, "valid_from": null, "attribution": "www.nant-de-drance.ch", "evidence_id": "ecaaf473-830e-43af-8b77-731cc86f9526", "valid_until": null, "assertion_id": "57bfeb46-10e0-46a6-99e5-eb1656b7f081", "temporal_expression": "", "extraction_confidence": 0.9}, "location": {"value": "Underground between the Emosson and Vieux Emosson reservoirs; the power house cavern is 600 metres underground.", "rights": "facts_only", "source": {"url": "https://www.nant-de-drance.ch/en/the-power-plant", "name": "www.nant-de-drance.ch", "origin": "live", "checksum": "ae56471a86ef4eb63e95bdab6923be814c86398cff42d7167c3e5211bf683df1", "observed_at": "2026-10-17T16:42:01.175680+00:00", "revision_id": "c5733dd7-a5d9-43c0-8da7-814d4d7afbfc", "published_at": null}, "locator": "/html/body/main/div[2]/div[1]/div/div[1]/div[2]/p", "claim_id": "113358a7-1353-4416-9acd-df756b18473e", "modality": "reported", "confidence": 0.9, "valid_from": null, "attribution": "www.nant-de-drance.ch", "evidence_id": "91176739-63b4-411f-a987-2f657a00426f", "valid_until": null, "assertion_id": "27a0f08b-4b58-4f0c-9278-c57f725c2803", "temporal_expression": "", "extraction_confidence": 0.9}}, "origin": "snapshot", "revision": 1, "timeline": [], "is_sample": false, "project_id": "703a8ebe-9729-47f3-a2ec-ac30a1adf222", "publication": {"local_only": false, "reviewed_at": "2026-10-17T16:57:59.287564+00:00", "indexability": "noindex", "buying_window": "unknown", "policy_version": "accepted-destination-v1", "template_version": "dossier-v1"}, "public_summary": "Nant de Drance is a pumped-storage plant between the Emosson and Vieux Emosson reservoirs, with its power house cavern 600 metres underground. The source reports 900 MW total capacity across six 150 MW pump turbines and 20 million kWh of storage. It also reports a maximum turbine flow of 360 m\u00b3/s and a five-minute switch from full-power pumping to full-power turbining.", "schema_version": "1.0", "public_unknowns": ["The supplied source snapshot, observed 2026-10-17, does not state procurement status, a buying schedule, financing, ownership or operator, or a next project milestone."], "evidence_observed_at": "2026-10-17T16:42:01.175680+00:00", "knowledge_reviewed_at": "2026-10-17T16:56:44.973702+00:00", "decisive_evidence_observed_at": "2026-10-17T16:42:01.175680+00:00", "export_metadata": {"publisher": "CapexCue", "project_title": "Nant de Drance pumped storage power plant.", "original_project_title": "Nant de Drance pumped storage power plant.", "canonical_url": "https://capexcue.com/projects/nant-de-drance-pumped-storage-power-plant-e0c9a0df-d7a/", "release": {"id": "e7f9ea29-828b-4601-8cde-b75c5d1ca82b", "number": 1, "published_at": "2026-10-17T16:58:07.995185+00:00"}, "release_reference": "release 1 (e7f9ea29-828b-4601-8cde-b75c5d1ca82b)", "current_dossier_url": "https://capexcue.com/projects/nant-de-drance-pumped-storage-power-plant-e0c9a0df-d7a/", "citation": "CapexCue \u2014 Nant de Drance pumped storage power plant. \u2014 dossier released 2026-10-17T16:58:07.995185+00:00, release 1 (e7f9ea29-828b-4601-8cde-b75c5d1ca82b) \u2014 https://capexcue.com/projects/nant-de-drance-pumped-storage-power-plant-e0c9a0df-d7a/.", "edition_note": "This file records the release identified above; visit the current dossier for later updates.", "presentation": {"version": "dossier-presentation-v7", "project_milestones": [], "project_category": {"basis": "codex_retained_dossier_curation", "value": "energy", "support": {"end": 230, "start": 0, "sources": [{"url": "https://www.nant-de-drance.ch/en/the-power-plant", "name": "www.nant-de-drance.ch", "origin": "live", "checksum": "ae56471a86ef4eb63e95bdab6923be814c86398cff42d7167c3e5211bf683df1", "observed_at": "2026-10-17T16:42:01.175680+00:00", "revision_id": "c5733dd7-a5d9-43c0-8da7-814d4d7afbfc", "published_at": null}], "modality": "reported", "predicate": "scope", "raw_value": "The plant is rated at 900 MW and comprises six 150 MW pump turbines. Reported storage capacity is 20 million kWh; maximum turbine flow is 360 m\u00b3/s. The plant can switch from full-power pumping to full-power turbining in 5 minutes.", "statement": "The plant is rated at 900 MW and comprises six 150 MW pump turbines. Reported storage capacity is 20 million kWh; maximum turbine flow is 360 m\u00b3/s. The plant can switch from full-power pumping to full-power turbining in 5 minutes.", "qualifications": {"attribution": "www.nant-de-drance.ch"}}, "label": "Energy", "icon": "energy"}, "project_metadata": {"version": "released-metadata-v7", "category": {"basis": "codex_retained_dossier_curation", "value": "energy", "support": {"end": 230, "start": 0, "sources": [{"url": "https://www.nant-de-drance.ch/en/the-power-plant", "name": "www.nant-de-drance.ch", "origin": "live", "checksum": "ae56471a86ef4eb63e95bdab6923be814c86398cff42d7167c3e5211bf683df1", "observed_at": "2026-10-17T16:42:01.175680+00:00", "revision_id": "c5733dd7-a5d9-43c0-8da7-814d4d7afbfc", "published_at": null}], "modality": "reported", "predicate": "scope", "raw_value": "The plant is rated at 900 MW and comprises six 150 MW pump turbines. Reported storage capacity is 20 million kWh; maximum turbine flow is 360 m\u00b3/s. The plant can switch from full-power pumping to full-power turbining in 5 minutes.", "statement": "The plant is rated at 900 MW and comprises six 150 MW pump turbines. Reported storage capacity is 20 million kWh; maximum turbine flow is 360 m\u00b3/s. The plant can switch from full-power pumping to full-power turbining in 5 minutes.", "qualifications": {"attribution": "www.nant-de-drance.ch"}}}, "input_hash": "d37bd765e8fa7faeac88517b4bd031fb59afeb9fe0af56a75dfd49db1461a327", "release_id": "e7f9ea29-828b-4601-8cde-b75c5d1ca82b", "type_codes": ["pumped_hydro"], "field_states": {"type": {"state": "accepted", "reason": "Nant de Drance and the Emosson reservoirs identify Switzerland; pumped-storage operation is explicit."}, "region": {"state": "accepted", "reason": "derived_from_accepted_countries"}, "country": {"state": "accepted", "reason": "Nant de Drance and the Emosson reservoirs identify Switzerland; pumped-storage operation is explicit."}, "category": {"state": "accepted", "reason": "Nant de Drance and the Emosson reservoirs identify Switzerland; pumped-storage operation is explicit."}}, "region_codes": ["europe"], "release_hash": "2ed647cd55ce669acd2e765032228b0b981aeced065776d6a259b069b414de1b", "assessment_id": "74047bca-f4ad-4a8d-bb50-e3e2cd7c73c1", "country_codes": ["CH"], "assessment_hash": "b445f353ced957b48ef2d4206f340ff83bea36e0c401a7b4ea3c75c9c613e832", "country_label": "Switzerland", "region_label": "Europe", "type_labels": ["Pumped Hydro"]}, "date_note": "Project event times are distinct from source publication, observation and dossier release dates. An elapsed plan does not establish completion."}}}