Altitude: 4,550 meters.
Oxygen content in the air is less than 60 % of that at plain elevations. Ultraviolet intensity is more than three‑fold higher than in low‑altitude regions. Day‑night temperature swing can reach up to 40 °C. Violent gales and heavy snowstorms are frequent visitors here.
In Umatang Township, Damxung County, Xizang, prayer flags flutter loudly in the wind, while sunlight pours down with an almost extravagant intensity. This is one of the places closest to the sky, home to a 400 MW PV + 50 MW solar‑thermal integrated project — the world’s highest‑altitude parabolic‑trough solar‑thermal power station.
What Gokin Solar has delivered here goes far beyond merely building a power plant. At 4,550 meters above sea level, we have re‑examined the relationship between energy and nature.
Why the “Roof of the World”?
Umatang Township of Damxung County sits at an average altitude above 4,500 meters, a genuine marginal zone for human survival. Building a solar‑thermal power station here stems from reverence for natural resources: solar irradiance, sunshine duration and atmospheric transparency all reach top‑tier domestic levels.
Gokin Solar sees more than just “light”.
The Qinghai‑Xizang Plateau is known as the “Asian Water Tower” and “China’s Water Tower”. Though ecologically fragile, it carries immense strategic importance. Developing energy projects here is essentially a profound question of how to pursue development: can the facility deliver clean energy while safeguarding the land beneath our feet?
An annual power output of 719 million kWh and annual CO₂ emission reduction of 652,300 tons are not cold statistics. They are a ceremonial khata presented to the Qinghai‑Xizang Plateau — protecting this purest land with the cleanest energy.
Nearly 4,000 km: An Extreme Test
From Huadu, Guangzhou to Damxung, Xizang stretches a journey of almost 4,000 kilometers. Gokin Solar orchestrates full‑chain logistics and delivery to ensure every PV module arrives on schedule. Behind this achievement lie countless iterations of transport‑route planning, loading‑unloading specifications, and high‑altitude‑sickness contingency plans.
The long journey is only the beginning.
Maximum UVI can hit 15; day‑night temperature difference peaks at 40 °C; single‑event snow accumulation can exceed 50 cm. These extreme conditions constitute the real‑world test bench. At 4,550 m elevation, materials age many times faster than on plains. Mechanical structures endure severe thermal expansion and contraction, while electrical insulation faces brand‑new challenges in thin rarefied air.
What enables Gokin Solar to withstand such harsh conditions?
N‑type TOPCon bifacial dual‑glass modules hold certification under TÜV Rheinland IEC TS 63209‑1:2021 and the uneven snow‑load test. Front‑side maximum static load reaches 5,400 Pa and rear‑side 2,400 Pa — proof that products have undergone rigorous validation both in laboratories and real‑world field environments.
Another decisive factor is the custom‑tuned bifaciality design tailored by Gokin Solar for plateau conditions. Modules achieve a bifaciality of 80 % ±5 %. During snow seasons in Umatang, surface albedo exceeds 80 %, yielding particularly prominent bifacial gains. Boosted front‑side efficiency couples with continuous rear‑side light‑harvesting. Both sides jointly amplify the plateau’s natural advantages, building a symbiotic energy‑capturing bond between modules and plateau terrain.
Where the sky hangs nearest, light arrives from multiple directions. Gokin Solar designs modules to capture as much of that light as possible.
Power Generation Above, Grazing Below
At Umatang, PV panels serve another role.
Acting like giant sun‑shade umbrellas, they effectively lock in soil moisture and boost forage‑grass growth underneath. Yaks and sheep wander among arrays. This PV‑pastoral complementary model fosters positive interaction between solar power generation and ecological animal husbandry.
This is no idealized fantasy. In frigid high‑altitude zones, grass means livelihood for herders. By cutting evaporation, conserving soil and nourishing pasture, PV arrays do not crowd out ecological space — instead they become guardians of grassland ecosystems.
Meanwhile this blue “ocean” of panels transforms local livelihoods. Since project construction commenced, cumulative economic benefits have reached 5.2 million yuan, bringing income opportunities for villagers right at their doorsteps.
Power on panels, grazing underneath, revenue beyond arrays.
Taken together, these three dimensions embody Gokin Solar’s vision for energy development: a power plant is not an isolated industrial enclave. It should integrate into local ecological and economic systems and act as foundational infrastructure for community progress.
What Do Those Who “Plant Suns” Truly Sow?
“Planting a sun where we stand closest to the sky.”
At Umatang, we plant a set of hypotheses for tomorrow:
‑ What if clean energy could take root amid the harshest environments?
‑ What if industrial projects could co‑exist alongside fragile ecosystems?
‑ What if technological progress ultimately serves human well‑being?
Moments when sunlight converts into electric current, when grass sprouts beneath panels, when local households improve their lives thanks to project income — these turn the poetic metaphor of “planting a sun” into tangible reality.
The Umatang project marks a starting point.
It demonstrates that humanity can draw energy with greater reverence for nature and give back to nature through smarter solutions at places closest to the sky. Light and heat work side‑by‑side; day and night take turns delivering power. Gokin Solar continues along this path, searching for the next “place closest to the sky”.
We plant light.
What grows back is a green future brimming with infinite possibilities.
