This measure considers the total actual energy usage and cost over a monthly or quarterly basis for the Village Creek Water Reclamation Facility for Natural Gas, Methane Bio-Gas purchased from the City of Arlington landfill through our contract with Renovar Energy, and purchased electricity from the City's electric provider. The cost of generating electricity and generating bio-gas on-site is tracked by the Technical Services Section of the Village Creek Water Reclamation Facility. The importance of this measure is to provide sustainability information to the Utility Management Office to determine the City's progress in meeting its 5% energy reduction goals. In addition, this goal tracks the progress of the Village Creek Water Reclamation Facility in attaining its goal of Net Zero by the end of FY 2016-17 and maintaining its project payback schedule for the Johnson Control Energy Savings Performance Contract. The target is based on the city's Utility Policy.

Data is collected automatically by the Village Creek Water Reclamation Facility SCADA system and compiled by the Village Creek Water Reclamation Facility Technical Services Group.

The Village Creek Water Reclamation Facility, Technical Services Section tracks Biogas generated, Biogas Purchased, Natural Gas Purchased, Electricity Purchased and Electricity Produced. Using these values Mr. Godinez uses the following formula to determine the Total Energy Cost ($)/MG. Total Energy Cost ($) = (mmbtu Biogas generated) X ($/mmbtu biogas generated )+ (mmbtu Biogas purchased from Renovar) X ($/mmbtu Biogas purchased from Renovar) + (mmbtu Natural gas purchased from Atmos) X( $/mmbtu gas purchased from Atmos) + (kwh Electricity purchased from Oncor) X ($/kwh electricity purchased from Oncor) +[(kwh Electricity produced by VCWRF Generators) X ($/kwh electricity produced by VCWRF Generators) + (kwh equivalent saved by Steam turbines X $/kwh steam turbines)]. Total Energy Cost $/ MG treated for the period as obtained from the Village Creek Water Reclamation Facility Operations SCADA system historical database = Total Energy Cost $/ MG. At the end of the year the actual energy expenditures are validated with the final financial reports for the fiscal year. All this data is tracked on a monthly, quarterly, semi-annual and annual basis due to the variable seasonal operations related to rainfall and flow conditions.

Actual = cost / millions of gallons treated