Building globally competitive platforms to enable industrial decarbonization at scale
In mid-December 2025, India's AM Green and Japan's Mitsui & Co. signed a memorandum of understanding to explore what could become the world's first fully integrated green aluminium production system. The partnership places a considered wager on a future where heavy industry draws its power not from fossil fuels but from wind, sun, and stored water — and where industrial buyers are willing to pay for that distinction. It is an early but deliberate step in the longer human effort to reconcile the demands of modern civilization with the limits of the planet that sustains it.
- The global aluminium industry remains deeply carbon-intensive, and AM Green's plan to build a 1 million tonne smelter powered entirely by renewables represents a direct challenge to that status quo.
- The scale of ambition creates real tension: constructing an integrated smelter, refinery, and mining operation by 2030 demands enormous capital, flawless execution, and a market willing to pay a green premium.
- Mitsui's potential investment would provide the financial firepower needed, while both companies work to map out supply chain agreements, procurement structures, and market access across the full green metal value chain.
- The partnership currently rests at the exploration stage — an MoU, not a contract — leaving the critical question of whether the economics hold at industrial scale still unanswered.
- If the model proves viable, AM Green signals it intends to replicate it across ammonia, hydrogen, and sustainable fuels, making aluminium a proving ground for decarbonizing heavy industry more broadly.
Two industrial companies have begun mapping what could be the world's first fully integrated green aluminium system. AM Green — founded by the architects of renewable-energy giant Greenko — and Japan's Mitsui & Co. signed a memorandum of understanding in mid-December to investigate a strategic partnership in low-carbon metal manufacturing.
The plan is ambitious in scope. AM Green intends to build a primary aluminium smelter producing 1 million tonnes annually, supported by a refinery generating 2 million tonnes of alumina each year. The distinguishing feature is the power source: wind and solar installations backed by pumped hydro storage, with 4.5 gigawatts of renewable capacity already committed by Coal India. Mitsui would provide the capital to build this platform, while both parties examine investment structures, procurement agreements, and supply arrangements across the entire green metal value chain.
AM Green is young but not without foundation. Its founders also run Greenko, which manages over 12 gigawatts of renewable capacity and is building 100 gigawatt-hours of storage by 2030. The company already operates across green ammonia, hydrogen, chemicals, and sustainable fuels. Co-founder Mahesh Kolli described the Mitsui collaboration as an acceleration mechanism — a way to expand market access and prove that industrial decarbonization can work at meaningful scale.
The targets are unambiguous: 1 million tonnes of green aluminium and 5 million tonnes of green ammonia annually by 2030. Whether the economics hold, and whether industrial buyers will commit to green metal at the prices such production demands, remains the open question. For now, the memorandum is a signal — that serious capital is beginning to move toward the infrastructure a low-carbon industrial future would require.
Two industrial powerhouses have begun exploring what could become the world's first fully integrated green aluminium production system. AM Green, a clean-energy platform built by the founders of renewable-energy giant Greenko, and Mitsui & Co., the Japanese trading and investment conglomerate, signed a memorandum of understanding in mid-December to investigate a strategic partnership focused on low-carbon metal manufacturing.
The ambition is substantial. AM Green plans to construct a primary aluminium smelter capable of producing 1 million tonnes annually, paired with mining operations and a refinery that would generate 2 million tonnes of alumina each year. What distinguishes this from conventional aluminium production is the power source: wind and solar installations, backed by pumped hydro storage to guarantee steady electricity supply. The company has already secured a commitment from Coal India for 4.5 gigawatts of renewable capacity to feed these operations.
Mitsui's role would be to provide the capital necessary to build this integrated platform. In return, both companies are examining opportunities across the entire green metal value chain—from investment structures to procurement agreements for low-carbon aluminium itself, as well as supply arrangements for the raw materials and equipment the smelter and refinery would require. The partnership represents a significant bet that industrial buyers will pay a premium for metals produced without fossil fuels.
AM Green itself is relatively young but backed by serious infrastructure. Mahesh Kolli and Anil Chalamalasetty, who founded Greenko, established AM Green as a platform for energy transition across multiple sectors. The company already operates in green ammonia, hydrogen, chemicals, and sustainable fuels like ethanol and aviation fuel. Greenko, their parent entity, currently manages more than 12 gigawatts of renewable energy capacity and is constructing 100 gigawatt-hours of storage by 2030.
Kolli framed the Mitsui partnership as an acceleration mechanism. "We are building globally competitive platforms across molecules and materials to enable industrial decarbonization at scale," he said, positioning the collaboration as a way to expand market access for green products beyond aluminium alone. The language suggests AM Green sees this as a template—prove the model works for metals, then replicate it across other carbon-intensive industries.
The timeline is aggressive. AM Green has set a target of 1 million tonnes of green aluminium capacity by the end of the decade, alongside 5 million tonnes of green ammonia production annually. These are not marginal additions to global supply; they represent meaningful scale in markets where decarbonization remains nascent. The partnership with Mitsui, if it moves from exploration to execution, would signal that major international capital is willing to fund the infrastructure required to make low-carbon industrial production competitive.
What remains to be seen is whether the economics work at scale, and whether industrial customers will actually commit to buying green aluminium at the prices such production requires. The memorandum is a beginning—a signal of intent from two companies betting that the future of heavy industry runs on renewable power.
Citações Notáveis
AM Green is building globally competitive platforms across molecules and materials to enable industrial decarbonization at scale. We are pleased to partner with Mitsui to explore collaboration pathways that can accelerate low-carbon aluminium and expand market access for a wider set of green products.— Mahesh Kolli, Founder of Greenko Group and AM Green
A Conversa do Hearth Outra perspectiva sobre a história
Why does aluminium production matter enough for a Japanese trading house to get involved?
Aluminium is everywhere—aerospace, automotive, packaging, construction. It's one of the most energy-intensive metals to produce. If you can crack low-carbon aluminium at scale, you've solved a problem for entire supply chains trying to decarbonize.
But can green aluminium actually compete on price?
Not yet. That's the whole bet. Mitsui's investment would help AM Green prove the model works. If it does, costs come down, and suddenly buyers who need to hit emissions targets have a real option.
What's AM Green's actual track record?
They're new, but their parent company Greenko already operates 12 gigawatts of renewable capacity. That's real infrastructure. AM Green is essentially taking that expertise and applying it to industrial materials instead of just power generation.
Why pumped hydro storage specifically?
Wind and solar are intermittent. A smelter can't shut down when the sun sets. Pumped hydro stores energy—you pump water uphill when power is cheap, release it through turbines when you need it. It's the most proven large-scale storage technology.
What does Mitsui get out of this besides returns?
Access to a supply chain advantage. If they help build the world's first integrated green aluminium platform, they control relationships with buyers who need low-carbon metal. That's market power.
Is this actually going to happen?
The MoU is just exploration. But the fact that Mitsui is serious enough to sign suggests they see a real path forward. The real test comes when they move from talking to funding.