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Stocks Market Insights of Japan’s Best Oil & Gas Public Energy Companies

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Oil & Gas Stocks Japan

In this stock market analysis article we are going to get some idea about economical strengths & value of some of the best Oil & Gas Public Energy companies of Japan. You are going to get full stocks analysis so read it full.

Stocks Info of Oil & Gas Companies of Japan :

Company NameStock Price (¥) Aug ’25Market Cap (¥ Billion)Net Profit (¥ Billion) FY2024Index Listing
Integrated Oil & Gas
ENEOS Holdings, Inc.8352,650525.1TOPIX Core 30, Nikkei 225
Idemitsu Kosan Co., Ltd.1,2501,820305.8TOPIX Large 70, Nikkei 225
Cosmo Energy Holdings9,200755122.5TOPIX Large 70
Exploration & Production
INPEX Corporation2,8504,200338.4TOPIX Core 30, Nikkei 225
Japan Petroleum Exp. (JAPEX)7,10037078.9TOPIX Mid 400
Taiyo Oil Company1,68010014.2TOPIX Small
Refining & Marketing
Itochu Enex Co., Ltd.1,88021519.1TOPIX Small
San-Ai Oil Co., Ltd.2,800826.3TOPIX Small
Mitsuuroko Group Holdings3,1501208.7TOPIX Small
Equipment & Services
JGC Holdings Corporation1,92073542.5TOPIX Large 70
Toyo Engineering Corp.1,050447.8TOPIX Small
Natural Gas Utilities
Tokyo Gas Co., Ltd.3,8002,220210.3TOPIX Core 30, Nikkei 225
Osaka Gas Co., Ltd.3,6001,690175.5TOPIX Large 70, Nikkei 225
Toho Gas Co., Ltd.3,00055536.5TOPIX Large 70
Saibu Gas Co., Ltd.1,9001528.5TOPIX Mid 400

Extra Reference :

TOPIX

Financial Analysis of Oil & Gas Companies of Japan :

Company NameD/E RatioP/E RatioROCE
Integrated Oil & Gas
ENEOS Holdings, Inc.0.655.09.5%
Idemitsu Kosan Co., Ltd.0.486.011.2%
Cosmo Energy Holdings0.726.210.8%
Exploration & Production
INPEX Corporation0.3512.415.1%
Japan Petroleum Exp. (JAPEX)0.414.713.5%
Taiyo Oil Company0.587.09.8%
Refining & Marketing
Itochu Enex Co., Ltd.0.3111.38.5%
San-Ai Oil Co., Ltd.0.2213.07.2%
Mitsuuroko Group Holdings0.2713.88.0%
Equipment & Services
JGC Holdings Corporation0.2517.36.8%
Toyo Engineering Corp.0.195.65.5%
Natural Gas Utilities
Tokyo Gas Co., Ltd.0.8010.67.1%
Osaka Gas Co., Ltd.0.759.66.9%
Toho Gas Co., Ltd.0.6815.25.5%
Saibu Gas Co., Ltd.0.7117.94.8%

Best Picks

  • INPEX Corp: Top Performer. Exceptional profitability (15.1% ROCE) with healthy, low debt (0.35 D/E).
  • JAPEX: Best Value. Extremely undervalued (4.7 P/E) while maintaining high profitability (13.5% ROCE) and low debt.
  • Idemitsu Kosan: Most Balanced. Strong all-around profile with high returns (11.2% ROCE), the lowest debt in its sector (0.48 D/E), and a low P/E ratio (6.0).

Avoids

  • Saibu Gas: Worst Profile. Alarmingly poor profitability (4.8% ROCE) combined with the highest valuation (17.9 P/E), making it severely overvalued.
  • JGC Holdings: Overvalued. High P/E (17.3) is not justified by its weak profitability (6.8% ROCE).
  • Toyo Engineering: Unprofitable. Despite low debt and P/E, it has the weakest core profitability (5.5% ROCE) on the list.

Piotroski F Score Analysis for Japan’s Best Oil & Gas Public Energy Companies :

Company NameInferred F-ScoreVerdict
Integrated Oil & Gas
ENEOS Holdings, Inc.6-7Hold
Idemitsu Kosan Co., Ltd.7-8Best Pick
Cosmo Energy Holdings5-6Hold
Exploration & Production
INPEX Corporation7-8Best Pick
Japan Petroleum Exp. (JAPEX)8-9Best Pick
Taiyo Oil Company6-7Hold
Refining & Marketing
Itochu Enex Co., Ltd.6-7Hold
San-Ai Oil Co., Ltd.5-6Hold
Mitsuuroko Group Holdings5-6Hold
Equipment & Services
JGC Holdings Corporation4-5Avoid
Toyo Engineering Corp.3-4Avoid
Natural Gas Utilities
Tokyo Gas Co., Ltd.5-6Hold
Osaka Gas Co., Ltd.5-6Hold
Toho Gas Co., Ltd.3-4Avoid
Saibu Gas Co., Ltd.2-3Avoid

Best Picks

  • JAPEX, Idemitsu Kosan, INPEX: These companies show the strongest financial health, characterized by high profitability (ROCE), strong balance sheets (low D/E), and attractive valuations (low P/E), leading to high inferred Piotroski scores.

Avoids

  • Saibu Gas, Toho Gas, Toyo Engineering, JGC Holdings: These companies show warning signs of weak profitability and poor valuation, indicating unstable financials and low inferred Piotroski scores.

Credit Rating Analysis for Best Japanese Oil & Gas Public Energy Companies :

Company NameInferred Credit Rating (S&P Scale)
Integrated Oil & Gas
ENEOS Holdings, Inc.BBB+ (Stable)
Idemitsu Kosan Co., Ltd.A- (Stable) Best Pick
Cosmo Energy HoldingsBBB (Stable)
Exploration & Production
INPEX CorporationA (Stable) Best Pick
Japan Petroleum Exp. (JAPEX)BBB+ (Positive) Best Pick
Taiyo Oil CompanyBBB (Stable)
Refining & Marketing
Itochu Enex Co., Ltd.BBB (Stable)
San-Ai Oil Co., Ltd.BBB- (Stable)
Mitsuuroko Group HoldingsBBB- (Stable)
Equipment & Services
JGC Holdings CorporationBB+ (Negative) Avoid
Toyo Engineering Corp.B (Stable) Avoid
Natural Gas Utilities
Tokyo Gas Co., Ltd.A- (Stable)
Osaka Gas Co., Ltd.A- (Stable)
Toho Gas Co., Ltd.BB+ (Negative) Avoid
Saibu Gas Co., Ltd.BB (Negative) Avoid

Final Words : Future Investment Analysis for Best Japanese Oil & Gas Public Energy Companies

Company NameFinancial StrengthFuture Prospects
ENEOS Holdings, Inc.GoodModerate
Idemitsu Kosan Co., Ltd.Very GoodGood
Cosmo Energy HoldingsGoodModerate
INPEX CorporationVery GoodGood
Japan Petroleum Exp. (JAPEX)GoodVery Good
Taiyo Oil CompanyGoodModerate
Itochu Enex Co., Ltd.GoodModerate
San-Ai Oil Co., Ltd.ModerateModerate
Mitsuuroko Group HoldingsModerateModerate
JGC Holdings CorporationWeakPoor
Toyo Engineering Corp.WeakPoor
Tokyo Gas Co., Ltd.Very GoodGood
Osaka Gas Co., Ltd.Very GoodGood
Toho Gas Co., Ltd.WeakPoor
Saibu Gas Co., Ltd.WeakPoor

Investment Possibilities :

Company NameShort-Term InvestmentLong-Term Investment
ENEOS Holdings, Inc.ModerateModerate
Idemitsu Kosan Co., Ltd.GoodGood
Cosmo Energy HoldingsModerateModerate
INPEX CorporationGoodGood
Japan Petroleum Exp. (JAPEX)GoodVery Good
Taiyo Oil CompanyModerateModerate
Itochu Enex Co., Ltd.ModerateModerate
San-Ai Oil Co., Ltd.ModerateModerate
Mitsuuroko Group HoldingsModerateModerate
JGC Holdings CorporationPoorPoor
Toyo Engineering Corp.PoorPoor
Tokyo Gas Co., Ltd.ModerateGood
Osaka Gas Co., Ltd.ModerateGood
Toho Gas Co., Ltd.PoorPoor
Saibu Gas Co., Ltd.PoorPoor

Top Picks

Company NameKey Reason
INPEX CorporationStrong finances, top credit rating.
Idemitsu Kosan Co., Ltd.Excellent financial health, great credit.
Japan Petroleum Exp. (JAPEX)Very high financial score, improving credit.

Avoids

Company NameKey Reason
Saibu Gas Co., Ltd.Very weak finances, poor credit.
Toyo Engineering Corp.Weak finances, risky credit.
Toho Gas Co., Ltd.Poor finances, worsening credit.

So this was it regarding full stocks analysis of Japan’s best Oil & Gas Public energy companies. You can get many fundamentals from this article which might be helpful in selecting the best companies. So best of luck.

Happy Investing

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