Solar panel production is going big in Mountain Iron. Heliene, Inc.'s solar panel manufacturing plant in the city's Renewable Energy Park will become the second largest solar photovoltaic module producer in the nation under a $5.5 million appropriation signed into law by Minnesota Gov. Tim Walz. âThis is important for the growth (of solar power),â Martin Pochtaruk, Heliene, Inc., president said. âThe demand for the product we make will continue to increase. The electrification of power generation in the United States is not going to stop.â The $5.5 million grant will help fund a $29 million expansion of the solar plant. Language approving the funding is part of the Minnesota Legislature Omnibus Commerce, Climate & Energy Finance & Policy bill.