Renetech AB, a Stockholm-based developer of renewable-energy and waste-biomass projects, brought its latest technology portfolio to the “+40” conference in Stockholm — a gathering of industry leaders, finance actors and government officials focused on climate-smart energy transitions. According to Renetech’s web site, their mission spans electricity, vehicle fuel, heat and biogas derived from waste and biomass, hydropower, solar and geothermal sources. I was commissioned to produce the for the event.