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China's airborne wind energy breakthrough

China's airborne wind energy breakthrough

New Capabilities

From Qian Xuesen's 1957 vision to the world's first megawatt-scale flying turbines

January 1st, 2026: S2000 Achieves First Grid Connection

Overview

In 1957, Chinese aerospace pioneer Qian Xuesen proposed capturing wind energy by wrapping turbines in circular housings at high altitudes. Seven decades later, a Beijing startup realized the vision: on September 19-21, 2025, China flew the S1500, a helium-filled turbine the size of a basketball court, at 1,500 meters in Xinjiang's desert, generating one megawatt. No other country has come close.

The achievement is a potential inflection point for airborne wind energy, a field that has struggled for decades to move from concept to commercial viability. Where Alphabet's Makani project collapsed in 2020 after years of testing 600-kilowatt systems, China's SAWES has already secured $70 million in contracts and plans mass production by 2026. The physics are compelling: wind at 1,500 meters blows three times faster than at ground level, theoretically producing 27 times more power. If SAWES can demonstrate long-term reliability, airborne wind could unlock renewable energy in deserts, islands, and disaster zones where conventional turbines cannot reach.

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Key Indicators

1 MW
Power Generated
First megawatt-scale airborne wind turbine successfully tested
1,500m
Operating Altitude
Seven times higher than the tallest conventional wind turbines reach
40%
Material Reduction
Less material needed compared to tower-based turbines—no steel towers or deep foundations
$70M
Contracts Secured
SAWES has already secured contracts and begun batch production

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People Involved

Dun Tianrui
Dun Tianrui
Leading commercialization of airborne wind systems
 Weng Hanke
Weng Hanke
Leading technical development of SAWES systems
 Qian Xuesen
Qian Xuesen
Deceased (1911-2009)

Organizations Involved

Beijing SAWES Energy Technology Co., Ltd.
Beijing SAWES Energy Technology Co., Ltd.
Startup / Clean Energy Technology
Leading China's airborne wind energy development

Beijing-based startup developing megawatt-scale airborne wind turbines using helium-filled aerostats.
Tsinghua University
Tsinghua University
Research University
Key research partner in SAWES development

One of China's leading research universities, collaborating with SAWES on airborne wind turbine development.
Makani Technologies LLC
Makani Technologies LLC
Defunct Startup / Clean Energy Technology
Shut down by Alphabet in February 2020

American airborne wind company that developed kite-based crosswind systems before Alphabet discontinued funding.

Timeline

January 1957 January 2026

10 events Latest: January 1st, 2026 · 6 months ago
Tap a bar to jump to that date

  1. S2000 Achieves First Grid Connection

    Latest Breakthrough

    The S2000 rises to 2,000 meters over Yibin, Sichuan Province, and successfully feeds 385 kilowatt-hours of electricity into the local power grid—the first grid connection for any airborne wind turbine worldwide.

  2. S1500 Generates 1 Megawatt—A World First

    Breakthrough

    Between September 19-21, the S1500—60 meters long, 40 meters wide and tall—generates one megawatt of power during desert tests in Xinjiang. It becomes the world's first megawatt-scale airborne wind turbine.

  3. S1000 Doubles Altitude and Output

    Milestone

    SAWES's S1000 reaches 1,000 meters altitude, doubling output to 100 kilowatts—demonstrating consistent scaling of the technology.

  4. S500 Prototype Reaches 500 Meters

    Milestone

    SAWES's helium-filled S500 blimp ascends to 500 meters above ground in Hubei Province, generating power at a rate exceeding 50 kilowatts.

  5. Alphabet Shuts Down Makani

    Industry

    Alphabet discontinues Makani after 13 years and a failed offshore test in Norway. The company releases its patents and research as open source, ending the most prominent Western airborne wind effort.

  6. SAWES Energy Technology Founded

    Corporate

    Dun Tianrui and Weng Hanke formally establish SAWES Energy Technology in Beijing after Weng's atmospheric research revealed the potential of upper-atmosphere wind capture.

  7. SAWES Begins Research

    Development

    SAWES begins research on airborne generators based on Qian Xuesen's 1957 concepts, starting with a team of seven people experimenting with helium-filled platforms.

  8. Google Acquires Makani

    Industry

    Google acquires Makani Technologies, making it an X moonshot project and signaling major tech industry interest in airborne wind energy.

  9. Makani Technologies Founded in California

    Industry

    Makani Technologies launches in Alameda, California, to develop crosswind kite power systems—marking the modern era of airborne wind energy development.

  10. Qian Xuesen Proposes High-Altitude Wind Concept

    Conceptual

    Chinese aerospace engineer Qian Xuesen proposes wrapping turbines in circular housings to capture high-altitude wind energy—the foundational concept SAWES would later commercialize.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

February 2020

Makani Technologies Collapse (2020)

After 13 years of development and acquisition by Google in 2013, Alphabet shut down Makani Technologies, the most prominent Western effort to commercialize airborne wind energy. The company had developed a 600-kilowatt crosswind kite system but failed during a 2019 test flight off Norway's coast, with the generator crashing into the sea. Alphabet cited a 'longer and riskier' path to commercialization than anticipated.

Then

Makani released its entire patent portfolio and 13 years of technical data as open source, allowing competitors to build on its research.

Now

The collapse created widespread skepticism about airborne wind energy's commercial viability, leaving the field without a major Western champion. SAWES has explicitly positioned its success as vindication of the technology Makani couldn't commercialize.

Why this matters now

SAWES's achievement directly addresses the failure that ended Makani: generating megawatt-scale power that Makani never reached. China's state-backed approach—university partnerships, sustained funding—offers a different development model than Silicon Valley's moonshot style.

2010-2025

China's Solar Panel Industry Dominance (2010s-2020s)

Through sustained state investment, manufacturing scale, and aggressive cost reduction, China came to dominate global solar panel production. By 2023, China manufactured over 80% of the world's solar panels. Western competitors like Germany's SolarWorld and multiple U.S. manufacturers went bankrupt or exited the market.

Then

Solar panel prices dropped by over 90%, accelerating global solar adoption far beyond forecasts.

Now

The West became dependent on Chinese solar supply chains, triggering trade disputes and prompting efforts to rebuild domestic manufacturing. China gained significant leverage in the global clean energy transition.

Why this matters now

If SAWES succeeds in commercializing airborne wind at scale, it could follow a similar pattern: Chinese dominance in an emerging clean energy technology, with Western competitors struggling to catch up despite early research leads.

1970-1990

Early U.S. Airborne Wind Energy Research (1970s-1980s)

The first major wave of airborne wind energy research emerged in the United States during the 1970s energy crisis. Miles Loyd published foundational work on crosswind kite power in 1980, calculating the theoretical energy potential of tethered wings flying perpendicular to the wind. Several research programs explored high-altitude wind capture.

Then

Falling oil prices in the mid-1980s eliminated funding, and no significant installations resulted from the research.

Now

Loyd's theoretical work became the foundation for all modern airborne wind systems, including Makani's crosswind kites and SAWES's ducted turbines.

Why this matters now

Airborne wind energy has seen multiple boom-bust cycles tied to energy prices and funding cycles. SAWES's progress comes amid sustained Chinese clean energy investment regardless of short-term economics—a structural advantage over funding-dependent Western research.

Sources

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South China Morning Post Interesting Engineering China Daily Global Times TechCrunch Yale Environment 360 U.S. Department of Energy Ember Interesting Engineering South China Morning Post