Envision commissions world’s largest off-grid green hydrogen and ammonia plant

Envision has officially commissioned what it claims is the world’s largest and most advanced green hydrogen and ammonia production facility, powered entirely by an off-grid renewable energy system.

Located in the Chifeng Net Zero Industrial Park in China, the plant delivers 320,000 tonnes of green ammonia annually, with exports set to begin in Q4 2025.

The project is the first of its kind to be fully AI-enabled, enabling real-time optimisation and operational stability at scale. According to Envision, this is also the first instance of commercial-scale application of integrated energy storage and load flexibility in green ammonia production. Surplus renewable electricity is stored as liquid nitrogen via a dynamic air-separation unit, while electrolyzers automatically adjust to fluctuating renewable power input to maximise efficiency.

The proprietary off-grid energy system includes advanced wind turbines, grid-forming battery storage, and predictive meteorological modelling. These components work together to dynamically balance wind and solar input with electrolyser and synthesis demands, enabling continuous green fuel production without reliance on the grid.

“This is more than a technological milestone,” said Lei Zhang, Envision’s Founder and CEO. “Scalable, green alternatives are now real and operational. We can’t get to net zero without green hydrogen, and we can’t afford to wait. This is the blueprint for a clean energy future.”

The facility has received Bureau Veritas Renewable Ammonia Certification and has secured a long-term offtake agreement with Japan’s Marubeni Corporation. By 2028, production at the Chifeng site is projected to expand to 1.5 million tonnes per year. Envision aims to reach price parity with grey ammonia and methanol within the same timeframe.

Described by the company as a modular and replicable model, the project is intended to serve as a blueprint for future clean industrial hubs globally. Envision positions the facility as a key step in replacing fossil fuels with intelligent, AI-powered, renewable-based solutions for hard-to-abate sectors.

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