Advocates for CCS are focused on the need to reduce CO2 emissions from hard-to-abate and energy-intensive industrial sector such as lime, cement, steel, chemicals and waste-to-energy. In many cases these emissions stem from the chemical process taking place to which there is no alternative. CO2 must also be recovered from the atmosphere. Most governments in Europe accept that fossil fuels will in future be used principally to supplement electricity generation from renewable sources. When they are used the CO2 released will need to be captured and permanently stored.