Through the Environment Protection Fund, the government also provides financial assistance to communes, intercommunal syndicates, and public establishments for installing photovoltaic cells, chip-fired heating, heating networks based on cogeneration plants, and low-energy buildings. For example, the Law of 22 February 2004 instituted a system of business subsidies for protecting the environment, making rational use of energy, and producing energy from renewable sources. The maximum assistance amounts to 30% for environmental protection investments and 40% for investments in rational energy use and electricity generation from renewable sources.