Fuel supplier Certa, which is part of DCC plc, is expanding its operations to make a new lower carbon home heating biofuel available to 100,000 households across Dublin, Kildare and Louth.The company said the expansion is in response to "exceptional" demand for the new biofuel, known as EcoMax."EcoMax comprises a blend of 20% HVO (Hydrotreated Vegetable Oil), a fossil-free fuel made from waste plant matter, and 80% kerosene," the company explained."Householders can use it instead of regular home heating oil ...