Japan: Plan to Phase Out Fossil Fuel by 2030

A growing coalition of researchers, NGOs, and climate‑policy advocates argues that Japan can phase out fossil fuels by 2030 if the government is willing to move with the urgency of a national transformation.

Japan’s energy system reflects a long-standing contradiction. It is a global technology leader, yet almost entirely dependent on imported fossil fuels. Now, as the Fossil Fuel Non‑Proliferation Treaty Initiative pushes governments to halt new coal, oil, and gas expansion and phase out existing production, Japan faces a stark question: Can a country that imports nearly every drop of fossil fuel it utilizes realistically quit them within the next 4 years?

A growing coalition of researchers, NGOs, and climate‑policy advocates argues that it can, if the government is willing to move with the urgency of a national transformation.

Japan produces almost no fossil fuels domestically. Government data show that in 2023, the country imported most of its crude oil, LNG, and coal (Figure 1). That dependence makes Japan one of the world’s largest fossil fuel importers, with energy security tied to volatile global markets.

Despite years of climate pledges, fossil fuels still supplied nearly 70% of Japan’s electricity in 2023, with coal remaining a central pillar of the power system (United States Energy Information Administration, 2026). A draft 2040 energy plan envisions cutting thermal power to 30-40%, but critics say it lacks a clear coal phase‑out pathway and risks locking in fossil infrastructure for decades.

　 Source: Agency for Natural Resources and Energy (2023)

Even so, there are practical steps Japan could take to align with the Fossil Fuel Non‑Proliferation Treaty Initiative and improve Japan’s energy sufficiency. The following three areas are particularly important.

A 2030 Phase‑Out Plan: Three Fronts, One Deadline

To align with the Fossil Fuel Non‑Proliferation Treaty Initiative, Japan’s plan must tackle three fronts simultaneously: production, consumption, and trade. Each requires decisive policy shifts and clear accountability.

1. Ending Production by Cutting off the Financial Pipeline

Japan’s domestic fossil fuel extraction is negligible, but its public banks and trading houses still finance overseas coal, oil, and gas projects. That financial footprint extends Japan’s influence far beyond its borders.

Policy actions:

Though radical, ban new public finance for overseas fossil fuel projects by 2027.
Phase out existing overseas fossil finance by 2030.

This would primarily fall under the Minister of Economy, Trade and Industry (METI), with support from the Japan Bank for International Cooperation (JBIC), and the Organization for Metals and Energy Security (JOGMEC).

Measurement: Annual public reporting of overseas energy finance, showing year‑on‑year reductions to zero. This approach directly supports the treaty’s call to halt the global expansion of fossil fuels.

Ending Consumption by Transforming Power, Transport, and Buildings

In practice, the most difficult changes would be domestic. Consequently, Japan must overhaul its domestic energy system at a pace rarely seen outside wartime mobilization.

Power Sector

Mandate a full coal phase‑out by 2030, accelerating current G7 timelines.
Require utilities to reach 80% renewables + nuclear by 2030.
Deploy grid‑scale storage, demand‑response programs, and AI‑enabled grid management (with human monitoring).

Transport

End sales of new gasoline and diesel cars by 2028.
Expand EV charging networks and electrify rail freight.
Shift long‑haul freight to rail and coastal shipping.

Buildings and Industry

Ban new fossil‑fuel boilers from 2027, replacing them with heat pumps.

Provide targeted subsidies for industrial electrification, green hydrogen, and direct air capture to e-fuel pilots.

Responsible agencies: METI, MOE, and the Electricity and Gas Market Surveillance Commission.

Measurement: Annual GHG inventories, fossil share of the power mix, EV sales data, and sector-level fossil fuel use, published through a public Fossil Phase-Out Dashboard.

Ending Fossil Fuel Imports and Exports to Close the Tap

Japan exports almost no fossil fuels, but its long‑term import contracts lock in production abroad.

Policy actions would include stopping new LNG and coal contracts beyond 2030, steadily reducing import volumes, and working with supplier countries to develop renewable alternatives. This would also require establishing just-transition partnerships with supplier countries to co‑finance renewable alternatives, such as green hydrogen and e-fuels.

Responsible agencies: METI, the Ministry of Foreign Affairs, and major utilities.

Measurement: Customs data tracking import volumes against a declining annual cap.

Who should receive this plan?

A proposal of this scale would need political championing inside government. Therefore, the most logical recipient is:

Mr. Ryosei Akazawa (Minister of Economy, Trade and Industry), Ministry of Economy, Trade and Industry (METI), Government of Japan
Email: comment@meti.go.jp

METI sits at the intersection of energy security, industrial policy, and climate strategy. Therefore, sending the plan to the minister’s office, while copying the Environment Minister and key parliamentary committees, would force dialogue about whether Japan wants merely to ‘transition away from fossil fuels’ at some point after 2035, or seriously test what a 2030 exit could look like.

The architects of the Fossil Fuel Non-Proliferation Treaty argue that wealthy, import-dependent countries like Japan must move first and fastest if the world is to keep the 1.5°C goal alive. For Japan, that means rewriting its energy story in the next five years, before the oil and gas contracts and the climate impacts they lock in. The question is whether Japan is willing to take that step. A 2030 phase‑out is ambitious and politically difficult. However, for a country that imports nearly all the fossil fuels it burns, the alternative is far riskier: a future defined by volatile markets, rising climate impacts, and missed opportunities for clean‑energy leadership.

For more information, check out the links below:

Agency for Natural Resources and Energy. (2023). Japan’s Energy: 10 Questions for understanding the current energy situation. Ministry of Economy, Trade and Industry. https://www.enecho.meti.go.jp/en/category/brochures/pdf/japan_energy_2023.pdf

Earth Island Institute. (2022). The Fossil Fuel Non‑Proliferation Treaty. Fossil Fuel Non‑Proliferation Treaty Initiative. (2021). Overview and country endorsements. https://www.earthisland.org/index.php/project/entry/the-fossil-fuel-non-proliferation-treaty

Japan Climate Initiative. (2024). JCI calls on the Japanese government to set an ambitious 2035 target aligned with the 1.5 ℃ goal. https://japanclimate.org/english/wp-content/uploads/sites/3/2024/05/JCI-message_2035ndc_EN.pdf