The RSPCB had placed restrictions on the use of coal and other polluting, smoke-generating fuels in the boilers in order to reduce industrial emissions and improve the state's air quality. The Rajasthan State Pollution Control Board has permitted industrial facilities in the state to utilise boilers that run on multi fuel. Only one type of fuel, either gaseous or biomass, which falls under the category of clean fuel, was formerly allowed.

Any of the fuels (LPG/PNG/CNG), solid fuels (biomass only) or liquid fuel(except furnace oil) can be used in multi-fuel-based-boilers. The use of fuels like coal and furnace oil in factories and boilers worsens the air quality in places where industrial clusters are located in addition to increasing gaseous pollution emissions. 

"The contribution of industrial emissions to overall air pollution has already been identified in many scientific studies carried out by prestigious institutions in collaboration with the RSPCB. Nevertheless, its control remains a big challenge as coal and other dirty fuels are predominantly used by the industries." - Naveen Mahajan, RSPCB Chairperson.