WWF and Plovdiv Energy Agency explore possibilities for using biomass without cutting down the forest
Toplofikatsia Ruse's green transformation plan relies on energy production from natural gas and biofuels
Prospects for the Black Sea coast - from biomass produced from algae for biofuel to healing therapies with sea mud
Yasen Katsarov, Toplofikacia Pernik: Everyone in the EU thinks that straw is many times more environmentally friendly than coal
