How a Dutch Startup Plans to Turn Steel Waste Into Vital Battery Metals
Haarlem, Thursday, 1 October 2026.
Backed by regional funding, Phoenix Metals is building a pilot plant to extract vanadium from steel slag, potentially supplying one-third of Europe’s demand for this critical battery material.
A Solution to Europe’s Steel Slag Dilemma
The European steel industry generates an estimated 16 million tons of steel slag annually, with Tata Steel Nederland alone producing 650,000 tons per year in IJmuiden [2][4]. Traditionally used as construction fill, steel slag has faced intense environmental scrutiny; on April 22, 2026, the Dutch Inspectie Leefomgeving en Transport (ILT) imposed a penalty payment on Tata Steel regarding the classification of LD steel slag as hazardous waste due to risks of soil and water pollution [2][4]. State Secretary of Infrastructure and Water Management Annet Bertram has even explored a potential ban on using steel slag in construction unless absolute safety can be guaranteed, intensifying the search for alternative industrial solutions [2][4].
The Hydrometallurgical Breakthrough in IJmuiden
Addressing this environmental bottleneck is Phoenix Metals, a Dutch startup originating from the Yes!Delft incubator and founded by four engineers who previously worked on vanadium extraction in South Africa [4]. The startup has partnered with Tata Steel Nederland to process steel slag, utilizing a novel hydrometallurgical method to recover critical raw materials such as vanadium, iron, manganese, magnesium, and calcium [2][4]. Unlike traditional recovery methods that require intense heat between 1,200°C and 1,500°C, Phoenix Metals operates its process below 100°C [2]. Powered entirely by electricity, the process is Scope 1 emission-free and avoids the CO2 emissions typically associated with burning limestone to produce calcium [2][4].
Funding the Green Transition in Noord-Holland
To scale this clean-tech innovation, Phoenix Metals successfully raised 4 million euros in a seed funding round on September 14, 2026, from a consortium of investors including InnovationQuarter, ROM InWest, and Mossinkoff Investments [2][4]. This private capital injection follows 5 million euros in prior research and development subsidies sourced from the European Just Transition Fund, the provinces of Zuid-Holland and Noord-Holland, Kansen voor West, and the Rijksdienst voor Ondernemend Nederland (RVO) [2][4]. Additionally, the startup is accelerating its business development through the 200-day Green Chemistry Accelerator (GCA) program, supported by Invest-NL and regional development partners [2][4].
Noord-Holland as an Energy Transition Hub
The success of companies like Phoenix Metals underscores Noord-Holland’s strategic positioning as a critical hub for the Dutch energy transition [1]. Regional development agency ROM InWest has highlighted that the province’s unique ecosystem of heavy industry, offshore wind potential, and energy-intensive data centers provides an ideal testing environment [1]. However, as experts Robin and Reynier from ROM InWest point out, hardware-focused clean-tech companies face significant funding gaps and regulatory hurdles compared to software ventures [1]. To ease these challenges, ROM InWest and its partners are actively exploring the establishment of a physical pilot facility in the Noordzeekanaalgebied to help industrial innovators test and scale their prototypes [1].
Scaling Up to Meet European Demand
Phoenix Metals is currently constructing a pilot plant in IJmuiden near Tata Steel, which is scheduled for completion in mid-2027 and will have a processing capacity of 500 tons of slag per year [2][4]. This is the stepping stone for a larger commercial facility planned for 2028 and targeted to be operational by 2031, with an initial capacity of 100,000 tons per year, eventually scaling to 1 million tons [2][4]. By recycling approximately 80% of the steel slag, the company aims to supply between 5,000 and 6,000 tons of vanadium annually [2][4]. With Europe’s current demand for vanadium hovering between 12,000 and 18,000 tons per year, Phoenix Metals could potentially supply between 27.778 percent and 50 percent of the continent’s annual requirements, paving the way for safer, locally sourced battery materials [2][4].