Hachijojima Geothermal Area

From Open Energy Information

Area Overview

Geothermal Area Profile

Location: Tokyo, Japan

Exploration Region: Northeast Honshu Arc

GEA Development Phase: Operational
"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

Coordinates: 33.1036°, 139.7869°

Resource Estimate

Mean Reservoir Temp: 283°C
556.15 K
541.4 °F
1,001.07 °R

Estimated Reservoir Volume: 77 km³
77,000,000,000 m³
18.473 mi³
2,719,229,337,517 ft³
100,712,197,663 yd³
77,000,000,000,000 L

Mean Capacity: 3.3 MW
3,300 kW
3,300,000 W
3,300,000,000 mW
0.0033 GW
3.3e-6 TW

USGS Mean Reservoir Temp:

USGS Estimated Reservoir Volume:

USGS Mean Capacity:

Use the "Edit With Form" menu option to add content

History and Infrastructure

Operating Power Plants: 1

Add a new Operating Power Plant

Developing Power Projects: 0

No geothermal projects listed.

Add a new Developing Power Project

Power Production Profile

Gross Production Capacity:

Net Production Capacity:

Owners  :
  • Tokyo Electric Power

Power Purchasers :

Other Uses:

Use the "Edit With Form" menu option to add content

Regulatory and Environmental Issues

Use the "Edit With Form" menu option to add content

Exploration History

First Discovery Well

Completion Date:

Well Name:



Initial Flow Rate:

Flow Test Comment:

Initial Temperature:

Use the "Edit With Form" menu option to add content

Well Field Description

Well Field Information

Development Area:

Number of Production Wells:

Number of Injection Wells:

Number of Replacement Wells:

Average Temperature of Geofluid:

Sanyal Classification (Wellhead):

Reservoir Temp (Geothermometry):

Reservoir Temp (Measured):

Sanyal Classification (Reservoir):

Depth to Top of Reservoir: 400m
0.4 km
0.249 mi
1,312.336 ft
437.444 yd

Depth to Bottom of Reservoir: 1500m
1.5 km
0.932 mi
4,921.26 ft
1,640.415 yd

Average Depth to Reservoir: 800m
0.8 km
0.497 mi
2,624.672 ft
874.888 yd

Use the "Edit with Form" button at the top of the page to add a Well Field Description

Geology of the Area

Use the "Edit With Form" menu option to add content

Geofluid Geochemistry


Salinity (low): 28000

Salinity (high):

Salinity (average):

Brine Constituents:

Water Resistivity:

Use the "Edit With Form" menu option to add content

NEPA-Related Analyses (0)

Below is a list of NEPA-related analyses that have been conducted in the area - and logged on OpenEI. To add an additional NEPA-related analysis, see the NEPA Database.

CSV No NEPA-related documents listed.

Exploration Activities (0)

Below is a list of Exploration that have been conducted in the area - and cataloged on OpenEI. Add.png Add a new Exploration Activity

No exploration activities listed on OpenEI.


  1. Henry J. Ramey, Jr., Roland N. Horne, Paul Kruger, Frank G. Miller, William E. Brigham, Jean W. Cook. 1993. Proceedings- 18th workshop geothermal reservoir engineering. Stanford, CA: 18th Workshop Geothermal Reservoir Engineering. Report No.: SGP- TR-145.
  2. 2.0 2.1 Ruggero Bertani. 2005. World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress.

List of existing Geothermal Resource Areas.