All kinds of renewable energy, biomass-biogas, hydrogen energy, energy forestry and non-fossil energy sources such as waste, electrical energy from sludge and other renewable energy resources, research, investigation, planning and implementation projects. Installation of renewable energy systems for consumers in need, installation services, sales and post-installation service services, commissioning and operation. Preparation, operation, maintenance and repair of all kinds of solid waste management and recovery projects. Designing of all kinds of biological and chemical treatment plants and waste recovery units.