In 2009 we had a 2.1% increase in the volume of energy sold (18,220 GWh sold in the year ended December 31, 2008 from 18,616 GWh sold in the year ended December 31, 2009).  The increase in volume in 2009 compared to 2008 is attributable to:
• a 5.6% increase in the average GWh consumption per customer, which we believe is due to the general improvement in macroeconomic conditions in Argentina; and
• a 2.6% increase in the number of our customers.

Sales in US$

Our net sales consist mainly of net energy sales to users in our service area.  Our net energy sales reflect the tariffs we charge our customers (which include our energy purchase costs) and reflect deductions for fines and penalties we incur during the year.
In addition, our net sales include late payment charges we bill our customers for delays in payment of their bills, connection and reconnection charges and leases of poles and other network equipment. 
If we fail to comply with the obligations under our concession, we may become subject to fines and penalties imposed by the ENRE.  Some of these fines and penalties are payable by granting credits or bonuses to our customers to offset a portion of their electricity charges.  Fines and penalties that are not directly related to our customers, such as fines for public safety violations, are paid directly to the ENRE.  We deducted Ps. 58.5 million in fines and penalties from our revenues in 2009, Ps. 34.8 million in 2008 and Ps. 23.9 million in 2007.