Japan Energy and Utilities: Long-term power demand, GX investment, and nuclear restarts become the core themes

Overview

This report is Morgan Stanley's energy and utilities investor presentation for Japan summer school, covering Japan's energy policy, long-term supply-demand outlook, power generation mix, regional electricity demand, nuclear power status, and the sector's major business segments. It is not a deep dive into a single company and does not provide explicit stock ratings or target prices; instead, it focuses on policy and industry structure to help investors understand the fundamentals of sub-sectors such as electricity, gas, upstream oil and gas, refining, and LP gas sales.

Core views

The core views include: first, Japan's 7th Strategic Energy Plan links energy security, decarbonization, and power demand growth, with F3/41 targets requiring higher energy self-sufficiency, lower final energy consumption, and greater electricity output. Second, new AI data centers and semiconductor plants are important sources of future incremental power demand, making major load regions such as Tokyo more worthy of attention. Third, the generation mix will shift from thermal-power dominance in F3/24 toward a more balanced combination of renewables, nuclear, and thermal power. Fourth, nuclear restarts are a key variable for improving supply, lowering carbon emissions, and supporting power system stability, but regional progress differs significantly. Fifth, policy investment support is being directed toward GX, next-generation solar, hydrogen, offshore wind, advanced reactors, and fusion.

Analysis framework

The report uses a top-down industry framework: it starts with the Japanese government's energy strategy and investment across 17 strategic sectors, then analyzes power demand, generation mix, supply-demand balance, and supply capacity, and finally maps these to business segments such as electricity, city gas, upstream oil and gas, refining, and LP gas sales, as well as related listed companies.

Methodology notes

• Policy analysisJapan's 7th Strategic Energy Plan

  Long-term energy supply-demand and generation mix targets

  By comparing F3/24 with F3/41e, the report evaluates changes in Japan's energy self-sufficiency, electricity output, final energy consumption, greenhouse gas emission reductions, and generation mix.

• Industrial policy analysis17 strategic sectors investment framework

  GX and energy security investment

  It incorporates strategic sectors such as resources, energy, security, GX, and fusion into the energy and utilities investment theme, focusing on cumulative public and private investment through F2040.

• Supply-demand analysisRegional electricity demand and supply-demand balance

  Regional load growth, peak demand, and residual supply capacity

  Based on OCCTO and Morgan Stanley Research data, it compares electricity demand across Japan's regions in F3/26e and F3/36e, as well as the August 2027 supply-demand balance and reserve margin.

• Industry structure analysisBreakdown of the energy and utilities value chain

  Electricity, gas, upstream oil and gas, refining, and LP gas sales

  By breaking down business links and regulatory status, it identifies regulated transmission and distribution, deregulated power retail and gas retail, as well as listed companies related to oil and gas and refining.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• Chubu Electric Power(9502.T)

  Representative company in the power business, involved in generation, transmission and distribution, and retail, and listed among the disclosed related companies.

  Strengths

  Electricity demand growth, data center load, and grid investment could provide long-term support.

  Weaknesses

  The transmission and distribution segment is government-regulated, while power retail has been liberalized although some transitional regulation remains.

  Comparison

  Like Kansai Electric Power, it is one of Japan's major electric utilities.

  Risks

  Fuel costs, nuclear restart progress, regulatory pricing, and supply-demand volatility.

• Kansai Electric Power(9503.T)

  Representative company in the power business and owner of multiple PWR units in the nuclear plant list.

  Strengths

  Western Japan's faster nuclear restart progress may support supply capability and fuel costs.

  Weaknesses

  Nuclear assets are sensitive to safety reviews, public acceptance, and regulatory timing.

  Comparison

  Compared with Eastern Japan, Western Japan has restarted more nuclear capacity and more reactors.

  Risks

  Nuclear operating risk, policy changes, and weaker-than-expected electricity demand.

• INPEX(1605.T)

  Representative company in the upstream crude oil and natural gas business.

  Strengths

  A medium- to long-term recovery in natural gas demand and the energy security theme may raise attention.

  Weaknesses

  Upstream oil and gas is sensitive to commodity prices and project cycles.

  Comparison

  Like Japan Petroleum Exploration(1662.T), it is a Japanese upstream oil and gas-related company.

  Risks

  Oil and gas price volatility, exchange rates, exploration and development risk, and policy decarbonization pressure.

• Tokyo Gas(9531.T)

  Representative company in the city gas business, involved in LNG terminals, LNG imports, pipeline distribution, and retail.

  Strengths

  LNG and city gas infrastructure have regional demand characteristics.

  Weaknesses

  City gas distribution is government-regulated, while the retail market has been opened to competition.

  Comparison

  Like Osaka Gas(9532.T), it is one of Japan's major city gas companies.

  Risks

  LNG procurement costs, retail competition, demand volatility, and regulatory changes.

• ENEOS Holdings(5020.T)

  Representative company in the petroleum products refining business.

  Strengths

  The refining business is tied to energy supply security and traditional fuel demand.

  Weaknesses

  Under the long-term energy transition, demand for petroleum products may face pressure.

  Comparison

  Like Idemitsu Kosan(5019.T) and Cosmo Energy Holdings(5021.T), it is a refining-related company.

  Risks

  Refining spreads, crude oil prices, carbon policy, and changes in demand structure.

• Iwatani(8088.T)

  Representative company in the LP gas sales business.

  Strengths

  It procures externally and wholesales or retails LP gas, giving it distribution-network characteristics.

  Weaknesses

  The business is affected by procurement prices and end demand.

  Comparison

  Compared with power, city gas, and refining companies, it is more downstream-oriented gas sales.

  Risks

  Fuel price volatility, competition, and substitution from the energy transition.

Key data

• F3/41e energy self-sufficiency targetAbout 30-40%The starting level in F3/24 was 15.2%.
• F3/41e electricity output targetAbout 1.1-1.2 trillion kWhThe starting level in F3/24 was 985.4bn kWh.
• F3/41e final energy consumption targetAbout 260-270mn klF3/24 was 300mn kl.
• F3/41e greenhouse gas reduction targetDown 73.0% vs. F3/14The report table shows the related F3/24 figure as 22.9%.
• F3/41e generation mix targetRenewables about 40-50%, nuclear about 20%, thermal power about 30-40%The starting levels in F3/24 were 22.9% renewables, 8.5% nuclear, and 68.6% thermal power, respectively.
• F3/41e solar share targetAbout 23-29%The starting level in F3/24 was 9.8%.
• Resource, energy, security, and GX investmentJPY 28.8 trillionThe Takaichi government's 12th strategic sector; related sub-items include next-generation solar, hydrogen, green steel, next-generation geothermal, offshore wind, next-generation advanced reactors, and GX chemicals.
• Total investment across 17 strategic sectorsJPY 370 trillionCumulative through F2040.
• Japan total electricity demand from F3/26e to F3/36eRising from 803.4TWh to 846.1TWh, CAGR 0.5%In the regional table, Tokyo is projected at 287.1TWh in F3/36e, the largest region.
• Japan total power generation in F3/25991.1TWhF3/14 was 1,084.5TWh, down 9% from F3/14.
• Nuclear power generation in F3/2593.5TWh, accounting for 9%Up 905% from F3/14, reflecting recovery from a low base.
• Renewable energy generation in F3/25228.6TWh, accounting for 23%Up 94% from F3/14.
• Supply-demand balance across nine regions in August 2027Supply capacity 186,670MW, peak demand 158,380MW, residual capacity 28,290MW, reserve margin 15%The reserve margin is 14% in the Tokyo region and 10% in the central-western region.
• Japan electricity supply capacity in F3/26Total 326,350MWIncluding 142,030MW thermal, 33,080MW nuclear, and 146,230MW renewables and others.
• Nuclear restart status as of 2026/6/26Total 33 reactors, 33,083MW; restarted 15 reactors, 14,609MWOf 14 reactors in Eastern Japan, 2 had restarted; of 19 reactors in Western Japan, 13 had restarted.

Impact & implications

In terms of investment implications, the key issue for Japan's energy and utilities sector is not short-term single-rating changes, but whether the policy and capex cycle can improve the long-term supply-demand landscape. AI data centers and semiconductor investment may drive load growth, benefiting power companies with supply capability, transmission and distribution assets, and regional demand exposure; nuclear restarts and renewable expansion may improve energy self-sufficiency and the emissions-reduction path; GX investment provides long-term themes for next-generation solar, hydrogen, offshore wind, advanced reactors, and related materials and equipment chains. At the same time, supply-demand balance, restart approvals, fuel prices, carbon pricing, and return regulation remain the main constraints on valuation and earnings elasticity.

Risks

• Changes in Japanese government energy policy, nuclear restart approvals, and power regulation could alter the sector's earnings and capex path.
• If AI data center and semiconductor plant construction is below expectations, incremental electricity demand may fall short of the report framework's assumptions.
• Nuclear restarts face safety review, local acceptance, operating stability, and political risks.
• Renewable energy expansion requires support from grid investment, storage, peaking, and grid-connection capability, otherwise penetration gains may be constrained.
• Price volatility in thermal power, LNG, coal, and oil products will affect the profit performance of power, gas, refining, and upstream companies.
• Carbon pricing and ETS implementation may alter the cost structure of high-emission assets.
• The disclosures indicate Morgan Stanley has investment banking, shareholding, or service relationships with multiple covered companies, so investors should note potential conflicts of interest.

What to watch

• Implementation details and subsequent policy adjustments for Japan's 7th Strategic Energy Plan.
• Phased progress toward F3/41 targets for energy self-sufficiency, generation mix, and greenhouse gas reduction.
• The actual load impact of new AI data centers and semiconductor plants on regions such as Tokyo and Hokkaido.
• The number of restarted nuclear units, capacity, regional distribution, and regulatory approval progress.
• Power supply-demand balance and reserve margins during the August 2027 and subsequent summer peak periods.
• Implementation of GX-related investment, including next-generation solar, hydrogen, offshore wind, next-generation advanced reactors, and fusion.
• Cost pass-through and sector differences after the launch of Japan's FY2026 emissions trading system.