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Asset classes
- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
- Oil & Gas Field7,055
- Coal / Uranium Mine5,382
- Pipeline4,951
- Cement Plant3,513
- Data Centre3,283
- Iron & Steel Plant1,293
- LNG Terminal1,198
- Grid Storage965
- Iron Ore Mine949
- Chemical Plant868
- Interconnector704
- Export Terminal519
- Refinery279
- Storage / Tank Farm38
- Oil / Commodity Contract19
- Hydrogen Project18
- Carbon Capture (CCS)16
Chokepoints
Japan · asset class
Pipelines in Japan
Japan has 93 pipelines mapped on the OverWatts open energy atlas — the 6th-largest fleet of the 110 countries that hold any, and 2% of the world's mapped total. Of these, 90 operating and 1 under construction or proposed.
The largest owner-operators are Tokyo Gas (25), INPEX Corp (20) and Saibu Gas (14) — Tokyo Gas alone is named on 27% of them. Half of Japan's pipelines in service predate 2004 (median commissioning year of the 90 with a known date), 8 came online in the past decade and the oldest still listed is Nihongi Pipeline, dating from 1959. 1 is in the pipeline, led by Amagasaki-Kumiyama Gas Pipeline, proposed. They account for 13% of every energy asset OverWatts maps in Japan.
On the interactive map
Who owns Japan's pipelines
- Tokyo Gas25 27%
- INPEX Corp20 22%
- Saibu Gas14 15%
- Osaka Gas11 12%
- Hokkaido Gas7 8%
- JAPEX7 8%
- Shizuoka Gas4 4%
- K&O Energy Group3 3%
Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.
When they were built
- 1950s1
- 1960s8
- 1970s8
- 1980s6
- 1990s12
- 2000s30
- 2010s21
- 2020s4
Median commissioning year 2004 · oldest Nihongi Pipeline (1959) · newest Nanohana Gas Pipeline (2022) · 90 of 93 carry a start date
Under construction & proposed
- Amagasaki-Kumiyama Gas Pipeline2029 · proposed
How Japan compares · pipelines by country
- 1. China1,108
- 4. Australia158
- 5. Italy135
- 6. Brazil93
- 7. Japan93
- 8. India90
- 9. Canada88
- 10. Germany87
Frequently asked
- How many pipelines are there in Japan?
- OverWatts maps 93 pipelines in Japan — 2% of the world's mapped total, the 6th-largest national fleet of the 110 countries with any.
- Who owns the pipelines in Japan?
- Tokyo Gas is named as owner or operator on the most — 25 of 93 (27%). Next are INPEX Corp (20), Saibu Gas (14) and Osaka Gas (11).
- How old are Japan's pipelines?
- The median commissioning year is 2004, across the 90 in service with a known start date. The oldest still listed is Nihongi Pipeline (1959); 8 came online in the past ten years.
- What new pipelines are being built in Japan?
- 1 project is under construction or proposed. The largest is Amagasaki-Kumiyama Gas Pipeline.