Le componenti passanti si riferiscono alle componenti che il fornitore incassa per conto di un altro fornitore. Vedi esempio del mercato dell'energia
Quindi secondo me, l'accento non é posto sul COSTO ma sul fatto che il fornitore funge solo da passaggio. Cioé per queste voci il punto non é che vengono vendute al costo, ma che vengono incassate per conto di terzi, o rimborsate da terzi.


http://docs.google.com/viewer?a=v&q=cache:u8F68Jl_l2cJ:www.a...


http://www.dishandi.unimi.it/cataloghi/gare_appalto_edilizi/...

This excerpt taken from the CVA 10-Q filed Apr 22, 2009.



Pass through costs:
The end consumer pays the supplier according to a tariff agreed between the consumer and supplier. The tariff may include pass-through costs. A pass-through cost is a cost that is charged to the energy supplier, but is then 'passed through' directly to the consumer. The elements in a bill are explained below.


http://webcache.googleusercontent.com/search?q=cache:C6sAb_u...

Pass through costs are costs for which we receive a direct contractually committed reimbursement from the municipal client which sponsors an energy-from-waste project. These costs generally include utility charges, insurance premiums, ash residue transportation and disposal and certain chemical costs. These costs are recorded net of municipal client reimbursements in our condensed consolidated financial statements. Total pass through costs were $14.8 million and $16.0 million for the three months ended March 31, 2009 and 2008, respectively.