Maibarara Geothermal Area

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Maibarara Geothermal Area

Area Overview

Geothermal Area Profile

Location: Sto Tomas, Batangas

Exploration Region: Philippines Geothermal Region

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: 14.068399589862°, 121.17572768896°

Resource Estimate

Mean Reservoir Temp: 268°C541.15 K
514.4 °F
974.07 °R

Estimated Reservoir Volume: 6.1km36,100,000,000 m³
1.463 mi³
215,419,466,998.1 ft³
7,978,498,775.9 yd³
6,099,999,999,999.999 L

Mean Capacity: 20 MW20,000 kW
20,000,000 W
20,000,000,000 mW
0.02 GW
2.0e-5 TW

USGS Mean Reservoir Temp:

USGS Estimated Reservoir Volume:

USGS Mean Capacity:

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History and Infrastructure

Operating Power Plants: 0

No geothermal plants listed.

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Developing Power Projects: 0

No geothermal projects listed.

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Power Production Profile

Gross Production Capacity:

Net Production Capacity:

Owners  :

Power Purchasers :

Other Uses:

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Regulatory and Environmental Issues

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Exploration History

First Discovery Well

Completion Date:

Well Name:



Initial Flow Rate:
  • "ad" is not declared as a valid unit of measurement for this property.
  • The given value was not understood.

Flow Test Comment:

Initial Temperature:

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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): 268°C541.15 K
514.4 °F
974.07 °R

Sanyal Classification (Reservoir):

Depth to Top of Reservoir: 610m0.61 km
0.379 mi
2,001.312 ft
667.102 yd

Depth to Bottom of Reservoir: 3050m3.05 km
1.895 mi
10,006.562 ft
3,335.511 yd

Average Depth to Reservoir: 1830m1.83 km
1.137 mi
6,003.937 ft
2,001.306 yd

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Geology of the Area

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Geofluid Geochemistry


Salinity (low):

Salinity (high):

Salinity (average):

Brine Constituents:

Water Resistivity:

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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

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  1. 1.0 1.1 1.2 1.3 1.4 1.5 A.C. Buban, M.F. Villadolid-Abrigo, R.B. Sta. Maria and D. Sussman. 1994. Geologic and Reservoir Model of the Maibara Geothermal Field. Proceedings of 16th New Zealand Geothermal Workshop; Makati: Philippine Geothermal Inc..
  2. 20 MW Maibarara Geothermal Power Project Starts Commercial Operations [Internet]. 02/09/2014. Ortigas Center Pasig City, Philippines. Maibarara Geothermal Inc.. [updated 2014/02/09;cited 2015/04/22]. Available from:

List of existing Geothermal Resource Areas.

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