JA begins orbital test of P-HJT solar modules

(SpaceEnergy) JA Solar has begun its first in-orbit test of P-type heterojunction photovoltaic modules, assessing whether crystalline-silicon technology could provide a lower-cost alternative for low-Earth-orbit spacecraft power systems.

The independently developed and packaged P-HJT modules launched aboard a Kuaizhou-11 rocket from Jiuquan Satellite Launch Centre on 17 September and entered their planned orbit, JA said in a company-issued release on 20 September.

The modules will be exposed to radiation, high-energy particles and extreme temperature variations. JA plans to compare their orbital performance with ground simulations to assess long-term reliability and degradation.

“Through real-world testing in orbit, we aim to assess the reliability and degradation of crystalline silicon technology in low-Earth orbit,” chief technology officer Ouyang Zi said.

JA said successful validation could support use of mature crystalline-silicon photovoltaics as an alternative to gallium arsenide for low-Earth-orbit applications, potentially reducing satellite power-system costs.

The company cautioned that space photovoltaics remain at an early validation stage, large-scale commercialisation is highly uncertain, it currently has no space-PV orders and the programme has no material impact on its present operating performance.