Swedish renewables developer OX2 AB (<a href="https://www.nasdaqomxnordic.com/aktier/microsite?Instrument=SSE227438&name=OX2&ISIN=SE0016075337" target="_blank">STO:OX2</a>) and Finnish limestone-based products maker Nordkalk Oy have decided to team up to explore opportunities for e-fuel production on the Swedish island of Gotland in the Baltic Sea.