for example the cement industry could reduce emissions by switching to alternative fuels for cement kilns such as municipal solid waste and sewage sludge provided they are guided by stringent environmental standards to limit any health or environmental risks such practices can however be limited by technical standards for cement construction material preferences and air pollution and solid waste regulations the approach can significantly reduce emissions and energy use first there is a lack of centralised data on installed capacity its distribution among sectors the type of fuel used and the amount of power and heating and cooling generated this limits understanding the potential for chp and required efforts to support a deployment program