{
  "$schema": "https://powerjp.mkhr.co.jp/.well-known/ai.json",
  "name": "powerjp",
  "url": "https://powerjp.mkhr.co.jp/",
  "alternate_names": ["powerjp Japan power grid map"],
  "language": ["ja", "en"],
  "entity_type": "open_data_visualization",
  "description": "powerjp is a static web map and reproducible pipeline for exploring Japan's power-grid topology, facilities, and observed transmission-line power flow from public data.",
  "capabilities": [
    "Explore transmission-line and substation geometry on a map",
    "Inspect generation sites and unit output layers",
    "View observed trunk-line power flow at 30-minute intervals",
    "Compare layers and inspect source attribution in the interface"
  ],
  "data_coverage": {
    "country": "Japan",
    "spatial_extent": "Japanese power-system network and generation facilities represented by the published source data",
    "flow_temporal_resolution": "30 minutes",
    "unit_output_temporal_resolution": "30 minutes",
    "area_supply_demand_temporal_resolution": "hourly upstream data used for derived estimates",
    "delivery_format": ["GeoJSON", "JSON"]
  },
  "methodology": [
    "Ingest public source data into a reproducible local pipeline",
    "Align source identifiers and coordinates",
    "Publish static, versioned artifacts with a manifest",
    "Render the artifacts in a React, Vite, and Mapbox GL JS web map"
  ],
  "sources": [
    "All-Japan-Grid",
    "OpenStreetMap",
    "OCCTO public power-system data",
    "MLIT National Land Numerical Information",
    "Global Energy Monitor"
  ],
  "limitations": [
    "This project visualizes observed flow; it is not an operational control system.",
    "Not every published flow record has a recoverable physical line geometry.",
    "Area-level demand is not building-level demand.",
    "Published artifacts carry source-specific attribution and licensing conditions."
  ],
  "distribution": {
    "frontend": "Cloudflare Pages",
    "data": "Cloudflare R2 or an R2-compatible CDN",
    "machine_readable_manifest": "manifest.json"
  },
  "license": {
    "code": "MIT",
    "published_artifacts": "See the in-application attribution and source terms; ODbL applies to artifacts derived from All-Japan-Grid/OpenStreetMap."
  },
  "last_reviewed": "2026-08-11"
}