SECONDARY SOLID FUELSIntroduction to Secondary Solid Fuels

While at European level this concept was already clearly spoken of in 2008, Italian legislation introduced the concept of SSF in 2010 in Legislative Decree no. 205 of 2010, “Provisions implementing Directive 2008/98/EC of the European Parliament and of the Council of 19 November 2008 on waste and repealing certain directives”.

The regulation (Legislative Decree No. 205/2010) defines Secondary Solid Fuels (SSF) as solid fuel produced from waste that respects the classification and specification characteristics identified in the UNI CEN/TS 15359 technical standards and subsequent amendments and additions; without prejudice to the application of Article 184 – ter, secondary solid fuel is classified as special waste.

The materials allowed for the production of SSF are municipal and special non-hazardous waste and materials not classified as waste and not in hazard classes as defined by the CLP Regulation.


The classification of Secondary Solid Fuels (SSF) is based on the determination of three parameters:

  • Lower Calorific Value (LCV), defined as an economic parameter
  • Chlorine content, defined as a technical parameter
  • Mercury content, defined as an environmental parameter

These three parameters determine the allocation of fuel classes within a specific table defined by the legislation outside which the waste cannot be defined as SSF.

In addition to the classification parameters, SSF manufacturers must indicate additional specific parameters, such as heavy metals, the limits of which are defined between the manufacturer and the buyer of the SSF at the commercial stage and not by specific regulations.

SECONDARY SOLID FUELS Standard references

  • UNI EN 15359, “Secondary solid fuels – Classification and specifications”
  • Ministerial Decree of 14 February 2013, no. 22, “Regulations governing the cessation of the qualification of waste of certain types of secondary solid fuels (SSF), pursuant to art. 184 – ter, paragraph 2, of Legislative Decree 3 April 2006, no. 152, and subsequent amendments”
  • Legislative Decree 3 April 2006, no. 152 “Environmental regulations”

SECONDARY SOLID FUELS How to present the sample in the Laboratory

Generally speaking the methods of presentation of the samples are defined during the contractual phase. If you have any doubts, contact the Laboratory for precise instructions.

Each sample delivered to the laboratory must be accompanied by the accompanying document, without which the Laboratory will not proceed with the acceptance of the sample.

This document can be completed at the time of delivery of the sample to the Laboratory.
However, to speed up the sample acceptance procedure, please download the form by clicking on the button below