Reuters: Finnish copper products maker Luvata said on Wednesday it would invest 20 million euros ($29 million) in production equipment for solar panel wires, hoping to benefit from renewable energy boom. Solar panel makers are demanding thinner photovoltaic wires as panels become smaller, and Luvata’s thinner wires minimise shadowing on the energy-capturing cells, it said. Luvata, owned by venture capital firm Nordic Capital, would expand production in its plants on Finland and the …