World Power Plants

Shiroyama Pumped Storage Power Station31 MW Hydroelectric

HydroRenewableVerified: Feb 2026

Shiroyama Pumped Storage Power Station is a 31 MW hydro power plant in Japan, operated by the Kanagawa Prefectural Government. It was commissioned in 1970. Ranked #75 of 90 hydro plants in Japan. Its 31 MW represents 0.08% of the country's total hydro capacity of 40,101 MW. The largest hydro plant in Japan is Okutataragi at 1,932 MW, making Shiroyama 62.2 times smaller. Nearby plants within 50 km include Isogo power station (1200 MW, Coal), Kazunogawa Pumped Storage Power Station (1200 MW, Hydro), and Minami Yokohama (1150 MW, Gas). The facility is located in Kanagawa Prefecture, approximately 30 km southwest of Tokyo.

Capacity
31 MW
Commissioning Year
Owner
神奈川県企業庁
Location
35.6160°, 139.1966°

Japan, Asia

Context & rankings
  • 314. largest of 662 plants in Japan
  • #16,324 worldwide by installed capacity
  • #3,789 of 8,493 Hydroelectric plants worldwide
  • 0.01% of the installed capacity of Japan
Operator portfolio

Kanagawa Prefectural Enterprise Bureau operates 2 plants totalling 62 MW

Regional density

51 plants within 100 km, 35,495 MW combined

Nearest plant: Kazunogawa Pumped Storage Power Station (30 km)

Data provenance

Location

Coordinates:: 35.616036, 139.196570
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Shiroyama Pumped Storage Power Station is a hydro power plant producing approximately 109 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
Japan
Continent
Asia
Data Source
Global Power Plant Database

JapanEnergy Profile

662
Total Plants
342.8 GW
Total Capacity
GasNuclearCoalOil
Top Fuels

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