Earthbound Sun for Orbit: Novosibirsk Engineers Are Changing the Rules for Spacecraft Testing
Researchers at Novosibirsk State Technical University have developed a solar array simulator that will allow engineers to test spacecraft equipment on Earth.
Engineers in Novosibirsk have built a device that effectively switches on a “space sun” inside a laboratory. Scientists at Novosibirsk State Technical University named after R.E. Alekseev (NETI) developed a solar array simulator capable of testing satellite power and navigation systems without the need for expensive full-scale field trials. The prototype has already completed initial testing in short-circuit, open-circuit and maximum-power modes. At first glance, the development may look highly specialized. In practice, however, it reflects a broader shift in how Russia is preparing for large-scale satellite constellation deployment while strengthening technological sovereignty in the space sector.
“Sunlight in the Lab”: Why Satellites Need a Ground-Based Simulator
Using real solar panels in terrestrial testing conditions is complicated, expensive and often inefficient. Such systems require specialized lighting, bulky equipment and still cannot always reproduce the real “light-shadow” orbital cycles experienced in space. The Novosibirsk simulator replaces the physical panel as a power source by reproducing its voltage-current characteristics with high precision. The device weighs about 30 kilograms and delivers a specific power output of up to 142 watts per kilogram.
According to developer Sergey Velikher, the device matches foreign counterparts in key performance parameters. This is not a consumer gadget but a precision engineering tool operating at the intersection of power electronics, automated testing and space instrumentation. Without infrastructure like this, it becomes nearly impossible to mass-produce communication satellites, navigation systems, Earth observation spacecraft and IoT satellites.
Why Demand for Testing Platforms Is Growing
The NSTU development fits into a clear strategic context. Russia plans to deploy a constellation of roughly 650 state-operated satellites by 2030. The transition from limited production to assembly-line manufacturing has already begun. In 2025, the Reshetnev company launched the country’s first assembly line for spacecraft weighing up to 300 kilograms using elements of robotics and machine vision.
As more satellites move through production lines, the demand for standardized, fast and reliable ground testing grows more urgent. At the same time, related segments of the supply chain are also being localized inside the country. The Moscow Technopolis has opened a full-cycle production facility for space-grade solar panels, while universities in Tomsk and Stavropol are developing alternative materials and inspection systems. The NSTU simulator fills a critical gap in that ecosystem by enabling safe “ground validation” for systems that will later operate in orbit.
From Prototype to Industry Standard
For now, the project remains a laboratory prototype that has demonstrated stable operation in core testing modes. The next phase will focus on emergency-condition optimization, endurance testing and adaptation for different classes of satellite platforms. The success of the project will depend largely on how quickly engineers can transition the development into serial production. The export potential of the device is somewhat limited because space electronics and testing systems often fall under dual-use technology controls. Even so, the simulator could find a role in technological cooperation programs with partner countries or within joint educational initiatives.
The primary market remains domestic. If the simulator proves reliable over time, it could become part of Russia’s broader lineup of ground-testing equipment while strengthening cooperation between universities and industry.
The Less Obvious Impact of the Project
Reliable satellites mean more stable communications in remote regions, more accurate navigation for transportation and logistics, faster monitoring of forests, farmland and environmental conditions, as well as industrial telemetry systems. For the government, the project reduces dependence on imported testing infrastructure, shortens spacecraft development cycles and strengthens the country’s university engineering ecosystem. Novosibirsk, already known for its scientific and technical expertise, gains another growth point in high-tech space instrumentation.
Infrastructure for the Safe Mass Launch of Satellites
The solar array simulator itself will never fly into orbit, but many future satellites may not fly without it. This is an infrastructure-level breakthrough designed to work ahead of demand. While countries compete over the number of spacecraft deployed in orbit, Russia is building the terrestrial foundation required for safe, large-scale launches. If the prototype successfully completes refinement and enters industrial supply chains, the region could emerge as one of the country’s key competence centers for testing systems designed for the next era of space development.
