China may have just built the most ambitious solar project in history. Stretching across 400 kilometres of the Kubuqi Desert in Inner Mongolia, a continuous corridor of solar panels now runs three miles wide across what was, not long ago, a sandblasted wasteland responsible for choking Beijing with dust storms every spring. Visible from space and holding a Guinness World Record, the project is so large that it already dwarfs most countries' entire solar capacity. But what makes it remarkable is not just the scale. The panels are also greening the desert beneath them, reducing evaporation, breaking wind, and allowing vegetation to return to land that had been barren for decades. China is calling it the Great Solar Wall, and it is only about halfway done.
What is China's Great Solar Wall in the Kubuqi Desert
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The project is formally known as the Kubuqi Desert Ordos Central-Northern New Energy Base, and its target is a staggering 100 gigawatts of solar capacity along a single 250-mile corridor. To put that number into perspective, the entire installed solar capacity of India as of 2024 was around 90 GW. China plans to build more than that in one continuous desert strip. As of 2024, only 5.4 GW was operational, but construction is accelerating fast. An additional 7 GW was expected to come online through 2025 alone, with the Three Gorges Kubuqi base the project's largest single installation, designed to deliver 16 GW when complete, drawing from a mix of solar, wind, and a smaller coal component kept specifically for grid stabilisation.
The project's target output is 40 billion kilowatt-hours of clean electricity per year for the Beijing-Tianjin-Hebei region by the end of this decade. Satellite images captured by the Operational Land Imager on Landsat 8 and Landsat 9, taken seven years apart, already show how aggressively the desert landscape has been transformed.
The Junma Solar Station: A Guinness World Record shaped like a horse
Sitting within the broader corridor is a completed installation that has already made global headlines on its own. The Junma Solar Power Station, meaning "fine horse" in Chinese, is a 2 GW facility made up of over 196,000 solar panels arranged in the shape of a galloping horse large enough to be photographed from orbit. It holds the Guinness World Record for the largest image ever made using solar panels. Built with smart inverter technology developed by Huawei Digital Power, the station generates 2 billion kWh of energy a year while serving as the visual centrepiece of the entire project.
The horse image is not just aesthetic. It is a deliberate cultural signal that the horse is a symbol of strength and freedom in Mongolian culture and a statement about how China views the relationship between renewable energy and national identity.
Solar panels as a tool against desertification in Inner Mongolia
What sets this project apart from any other solar farm in the world is what is happening underneath the panels. Research published in PNAS examining desert-based photovoltaic development in China found that solar infrastructure in arid regions directly supports desertification control and improves local livelihoods, while also delivering on climate goals. In the Kubuqi specifically, the effects are already measurable.
The panels are mounted higher than standard installations so that they also function as windbreaks, slowing the desert winds that previously carried sand hundreds of kilometres toward Beijing. The shade they cast reduces soil evaporation significantly, creating enough moisture retention for grasses and shrubs to take root. A 2026 study published in Ecohydrology that modelled the ecological effects of photovoltaic plants in the Kubuqi found that gross primary productivity increased by 110 grams of carbon per square metre during the growing season compared to the natural desert scenario, alongside a measurable increase in the region's carbon sink capacity. Satellite data has confirmed visible greening in areas where panels have been operational for several years, and researchers are now investigating whether this greening could eventually alter local rainfall patterns over time.
According to an analysis published in Scientific Reports on the ecological effects of large-scale photovoltaic development in desert regions, vegetation restoration under solar arrays improves soil structure, stabilises dunes, and creates measurable biodiversity benefits in areas that previously supported almost no plant life at all.
The transmission challenge: Getting power from the desert to the cities
Generating 100 GW in an uninhabited desert is one problem. Getting it to 100 million people in Beijing, Tianjin, and Hebei, roughly 1,300 kilometres away, is another. This is the project's biggest engineering challenge and the one that has historically slowed down China's desert energy ambitions the most.
The solution is ultra-high voltage direct current transmission, or UHVDC. In December 2025, China Daily reported that construction had begun on a dedicated UHVDC line spanning 700 kilometres from western Inner Mongolia to the Beijing-Tianjin-Hebei grid, with a transmission capacity of 8 million kilowatts and an expected operational date of 2027. The $2.4 billion project is operated by State Grid Corporation of China and is specifically designed to carry renewable power from the Kubuqi base southward. Analysis by Dialogue Earth noted that by the end of 2025, China had already commissioned 45 UHVDC lines totalling over 52,000 km of transmission infrastructure, more long-distance high-voltage grid than any other country on Earth.
What China's Solar Wall means for global clean energy
China's willingness to build at this scale, at this speed, and in terrain this difficult reflects a broader strategic calculation: energy security, climate commitments, and geopolitical influence are all tied together in clean energy infrastructure. While other major economies debate permitting timelines and grid interconnection rules, China is physically moving earth, pouring concrete, and stringing transmission cable across a desert the size of a small European country.
The Kubuqi project is not an outlier. It is a template. Similar solar-plus-desertification-control programmes are underway at the Tengger Desert in Gansu Province and across the Gobi. China has already restored more than 53 per cent of its treatable desertified land, reducing degraded land area by approximately 4.33 million hectares, according to official government data. The Great Solar Wall is the largest single expression of what that effort looks like when clean energy, land restoration, poverty alleviation, and long-distance transmission infrastructure are all pursued simultaneously rather than one at a time.
