Global Navigation:

Our Business

Renewable Energy

About renewable energy

With the goal of becoming an integrated energy company that contributes to a stable energy supply to broader communities, INPEX is engaged in efforts to commercialize renewable energies and reinforce Research and Development (R&D) activities for the next generation. INPEX will continue to explore the business potential of various types of renewable energy such as geothermal, which has synergies with conventional oil and gas development, and photovoltaic power generation.

Geothermal energy development

Geothermal power generation is achieved through the rotation of turbines using steam extracted at the surface from groundwater heated by underground magma. Geothermal has been touted as a precious, clean energy source because of its low CO2 emissions and stability as well as lack of influence from the weather or seasons compared with the other types of renewable energy.

INPEX has been participating in a joint geothermal development study in Akita and Hokkaido prefectures in Japan since 2011. In 2013, the drilling of exploratory wells in these locations began. Flow tests from the exploratory wells were conducted in 2015 as part of the second phase of the joint study. The results of the second phase of the study will be used to determine whether to move on to the third phase of the study, which includes the drilling of production pilot wells, steam production tests, hot water reinjections tests, evaluation of the geothermal reservoirs and environmental impact assessments. INPEX is also a member of the geothermal resources survey group in Fukushima prefecture. The group completed surface surveys in areas surrounding Mt. Bandai in 2016 and has begun drilling exploratory wells.

INPEX will also strengthen its geothermal energy development initiatives outside of Japan, having joined the Sarulla Geothermal Independent Power Producer (IPP) Project in Indonesia in June 2015. The project commenced commercial operations of the first unit In March 2017. The power generated from the project is sold to Perusahaan Listrik Negara, Indonesia’s government-owned electricity company for a period of 30 years.

About Teiseki Drilling Co., Ltd.
Our subsidiary Teiseki Drilling Co., Ltd. provides geothermal well drilling services. Teiseki Drilling has a track record of drilling more than half of all the wells connected to geothermal power plants in Japan.

Photovoltaic power generation

In photovoltaic power generation, large-scale systems with a power generating capacity of 1 megawatt (MW) or more are called Mega Solar facilities. Since the Great East Japan Earthquake of 2011 and the ensuing tsunami, expectations for greater photovoltaic power generation capabilities have grown in the hope of mitigating concerns about power supply shortages. The construction of Mega Solar facilities comprising ranks of numerous photovoltaic panels installed over a wide area is being promoted throughout Japan.

In 2013, INPEX began generating and supplying electricity at its first photovoltaic power generation system with a maximum output of 2 megawatts, located in Joetsu, Niigata Prefecture. In July 2015, the company began operating its second photovoltaic power generation system also with a maximum output of 2 megawatts located adjacent to the first system, through INPEX's wholly owned subsidiary, INPEX Logistics., Ltd. The INPEX Group collectively refers to the two photovoltaic power generation systems as "INPEX Mega Solar Joetsu". The photovoltaic power generation systems combined are expected to generate around 5,330,000kW of electricity per year, which is the equivalent of the annual power consumption of approximately 1,600 households.

Artificial Photosynthetic Chemical Process

In recent years, hydrogen has come to be seen as holding tremendous potential as the ultimate renewable energy resource. This is due to the fact that when combusted, hydrogen produces only water. Hydrogen can also be made into hydrocarbon fuels and chemicals by mixing them with carbon dioxide gas, making hydrogen an exceedingly clean source of energy.

INPEX has been participating in the “Japan Technological Research Association of Artificial Photosynthetic Chemical Process” commissioned by NEDO (New Energy and Industrial Technology Development Organization) and is engaged in an R&D project aimed at producing chemical products like plastics and hydrocarbon fuel from hydrogen obtained by decomposing water with the use of catalysts using solar energy and CO2.

Other activities

High-capacity lithium-ion battery

INPEX has been supporting ELIIY Power Co., Ltd., which is engaged in the development, manufacture and sales of lithium-ion batteries. The company’s high-capacity lithium-ion batteries, which are now widespread, can store electricity generated from renewable sources such as solar and wind energy, and provide access to this electricity at any given time. It is expected to contribute to the conservation of the global environment through a more effective use of renewable energy which cannot generate the power timely with the demand.

To top of page