News Newsletter Real estate market reports Real estate market reports archive Bulletins and real estate insider tips Ginesta in the media Glossary Illusions Teilen Drucken Fossil heat generators All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Fossil heat generators are fuels that have been produced from biomass over time. These include coal, oil and gas. CO2 is bound in this biomass, which is released again during combustion.