Within the bounds of its available budget, the Brussels-Capital provides investment assistance for companies which develop environmental projects, including investments in renewable energy systems. Eligible are investments in heat pumps for the production of heat as well as biogas and biomass CHP and trigeneration plants for the production of heating, cooling and electricity (Art. 4 Arrêté du 2 avril 2009). The eligible investment amount also includes freight, installation and assembly charges (Art. 6 Arrêté du 2 avril 2009). Moreover, the eligible investment shall amount to at least 7,500 EUR and shall concern investments planned within the Brussels-Capital region (Art. 8-9 Arrêté du 2 avril 2009).