Mitsubishi Heavy Industries' large-frame gas turbine backlog hits 35 GW, up 52% in a year

Mitsubishi Heavy Industries' large-frame gas turbine backlog stood at 35 GW as of the company's first-quarter fiscal 2026 earnings, up from 23 GW a year earlier - a 52% increase in twelve months^[1]. CFO Hiroshi Nishio disclosed the figure during a briefing on 6 August 2026, describing a "strong supply-demand environment" for gas turbines in the U.S.^[1]

What the order book shows

In its fiscal year 2025, Mitsubishi sold 35 large-frame gas turbines with a combined output of 16 GW^[1]. The pace accelerated into the current year: the company booked 10 large-frame orders in Q1 FY2026 alone - four destined for the United States and six for Japan^[1].

Mitsubishi's newly restructured Energy Systems division recorded order intake 56% higher year over year in the first quarter^[1]. Nishio said demand for gas turbines and nuclear power had already met or exceeded the company's full-year expectations just three months into its 2026 financial plan^[1].

Capacity expansion

The company plans to double its manufacturing capacity in response to the backlog^[1]. That target follows an earlier, more modest goal: MHI had initially aimed for a 30% production increase before concluding it was insufficient to clear the queue. The primary production site is the Takasago Machinery Works in western Japan, where the company has been reviewing more than 1,000 processes across procurement, assembly, testing, and design to shorten lead times.

Orders for MHI's energy systems unit have climbed roughly 40% over the past year to 3.6 trillion yen (approximately $23 billion), driven by demand from utilities and data center developers seeking dispatchable capacity.

Where MHI sits in the market

The 35 GW backlog is large in absolute terms but modest relative to its two main competitors. Siemens Energy closed its fiscal third quarter (ended 30 June 2026) with a gas services backlog of 69 GW after booking 15 GW in new orders and shipping 6 GW during the period. GE Vernova's gas turbine backlog and slot reservations have reached 116 GW, with the company targeting 125 GW under contract by year-end.

Across all three manufacturers, the pattern is the same:

• Backlogs are measured in years of output, not months
• Lead times for large-frame units now run five years or more on average, against a historical norm of one to three years
• Manufacturing capacity - not demand - is the binding constraint

The global gas turbine market is expected to reach around 70 GW of annual orders in 2026, according to MHI's own projections, with the company forecasting demand staying near that level through 2030.

What to watch

MHI's capacity doubling plan has no firm public completion date. The pace at which Takasago can actually increase throughput - and whether component supply chains keep up - will determine whether the 35 GW backlog shrinks or continues to grow. The split between U.S. and Japanese orders in Q1 (four versus six) is also worth tracking: if U.S. utility and data center demand accelerates further, the domestic allocation could shift materially in coming quarters.