Today: Oxford PV's perovskite cells are finding buyers in the world's biggest markets; Argentina eases glacier protections to unlock copper investments; BP investors demand proof fossil-fuel pivot will deliver value.

Welcome back: With solar-power demand surging globally, a British startup is at the center of a high-stakes pursuit by two of the world’s largest renewable energy players seeking a new form of the technology that harnesses more energy from the sun.

WSJ Pro Sustainable Business's Yusuf Khan reports that Oxford PV, which was spun out from the University of Oxford in 2010, produces solar cells that are coated with a layer of perovskite, a material that increases the power generated from an ordinary solar cell by at least 20%, it says.

Oxford PV has managed to launch the technology in both the Chinese and U.S. markets at around the same time, an unusual step for a European startup. In February, the company signed a licensing deal with First Solar, an American manufacturer, to produce panels in the U.S. This followed an agreement it made with Chinese manufacturer Trina Solar last year to license its technology for cells sold in China.

Oxford PV said competing with Chinese manufacturers in China would have been too challenging, so a partnership was the better option. It said there has been a shift in Chinese companies respecting intellectual property, making the company more willing to agree to a licensing agreement.

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Argentina has revised a glacier-protection law that had been an obstacle for global miners seeking to tap some of the world’s largest copper deposits.

The Journal's Ryan Dube writes that government officials and mining executives say the change is a key step in a bid by Argentina’s libertarian president, Javier Milei, to turn the country into a global copper powerhouse. Glencore, BHP Group and First Quantum are among firms with prospective copper projects in Argentina that require some $26 billion in investments.

The previous legislation, enacted in 2010, banned mining at or near thousands of Argentine glaciers, many high in the Andes where copper deposits are located. Mining executives say the law was so broad and unclear that it prevented nearly all mining, including in areas without glaciers or with no connection to aquifers.

The change in the legislation will put provincial governments—eager to promote development—in charge of determining which glaciers should be protected by identifying those that are a source of water downstream.

M​ore BP shareholders ​are backing a move ​c​alling on the energy major to​ prove that increasing investment in oil-and-gas production​ will deliver value for investors, the WSJ's Joshua Kirby reports.

The Local Authority Pension Fund Forum, a group representing U.K. pension funds, said it was joining other investors in supporting a resolution to be voted on at this month’s shareholder meeting, in response to the London-listed group’s shift away from a ​ renewables-focused strategy.

It calls on BP to demonstrate that higher spending on fossil-fuel production can deliver value for shareholders, and was filed earlier this year by U.K. and European pension funds along with activist investor Australasian Centre for Corporate Responsibility, or ACCR.

• Volkswagen will stop producing the ID.4 electric crossover car at its Tennessee plant in mid-April, its only American-made EV. (WSJ)
   
• France’s TotalEnergies said a refinery complex has been shut down after sustaining damage in the Middle East conflict this week. (WSJ)
   
• Airlines face billions of dollars of pain at the fuel pump. One carrier, though, happens to own its own gas station. (WSJ)
   
• Swedish electric hydrofoiling boat developer Candela received an order for 20 ferries from Norwegian public transport operator Boreal. (WSJ)
   
• NOVA Infrastructure raises $1.45 billion to back operators of assets such as data centers, battery projects and water-management systems. (WSJ)
   
• Journal readers share their top tips for the EV curious, including buying used, hidden costs and better ways to charge. (WSJ)

WSJ Pro Sustainable Business gives you an inside look at how companies are tackling sustainability. Send your comments to editor Perry Cleveland-Peck at perry.cleveland-peck@wsj.com and reporters Clara Hudson at clara.hudson@wsj.com and Yusuf Khan at yusuf.khan@wsj.com. Follow us on LinkedIn at perrycp, clara-hudson and yusuf_khan.