Historical Operational Statistics

The reporting requirements for DOE national user facilities are based on time. These requirements concern the actual hours of operation (ACTUAL) and the established maximum operation or uptime goal (OPSMAX). The average annual OPSMAX time for the ARM sites has been established to be 7884 hours per year. In other words, 0.90 of the 8760 hours in an non-leap year. During a leap year, OPSMAX time will be set at 7906 hours, or 0.90 of the 8784 available hours. The differences in time reflect the complexity of local logistics and the probability of extreme weather events. For a complete description of hours for each site, please refer to the current ARM Climate Research Facility Operations Quarterly Report.

The tables below provide the average actual hours of operation (ACTUAL) and the established maximum operation or uptime goal (OPSMAX) for the three ARM sites by fiscal year since 1998. In 2005, the statistics began reporting quarterly without being cumulative.

Table 1. Operational Data Statistics for the ARM Sites Beginning in 2006

1st Quarter
2nd Quarter
Time (hr) Data Availability (%) Time (hr) Data Availability (%)
Fiscal Year OPSMAX ACTUAL GOAL ACTUAL OPSMAX ACTUAL GOAL ACTUAL
2013 1987.20 2038.72 0.90 0.92 1944.00   0.90  
2012* 1987.20 2046.08 0.90 0.93 1965.60 2074.80 0.90 0.95
2011 1987.20 2112.32 0.90 0.96 1944.00 1944.00 0.90 0.90
2010 1987.20 2082.81 0.90 0.94 1944.00 2010.88 0.90 0.93
2009 1987.20 2097.60 0.90 0.95 1944.00 2008.80 0.90 0.93
2008* 1987.20 2075.52 0.90 0.94 1965.60 2065.12 0.90 0.95
2007 1987.20 2082.88 0.90 0.94 1944.00 2052.00 0.90 0.95
2006 1987.20 2082.88 0.90 0.94 1944.00 2088.00 0.90 0.97
3rd Quarter
4th Quarter
Time (hr) Data Availability (%) Time (hr) Data Availability (%)
Fiscal Year OPSMAX ACTUAL GOAL ACTUAL OPSMAX ACTUAL GOAL ACTUAL
2013 1965.60   0.90   1987.20   0.90  
2012* 1965.60 2089.36 0.90 0.96 1987.20 1987.20 0.90 0.90
2011 1965.60 1987.44 0.90 0.91 1987.20 2046.08 0.90 0.92
2010 1965.60 2060.24 0.90 0.94 1987.20 2031.36 0.90 0.92
2009 1965.60 2118.48 0.90 0.97 1987.20 1994.56 0.90 0.95
2008* 1965.60 2081.35 0.90 0.95 1987.20 2097.60 0.90 0.95
2007 1965.60 2002.00 0.90 0.92 1987.20 2024.07 0.90 0.92
2006 1965.60 2140.32 0.90 0.98 1987.20 2097.60 0.90 0.95

Table 2. Operational Data Statistics for the ACRF Sites from 2005 to 1998

Time (hr) Data Availability (%)
Fiscal Year OPSMAX ACTUAL GOAL ACTUAL
2005 7938.9 8023 0.90 0.92
2004* 7906 8023 0.90 0.91
2003 7884 7096 0.90 0.90
2002 7884 7270 0.90 0.92
2001 7884 7358 0.90 0.93
2000* 7906 7203 0.90 0.91
1999 7884 7271 0.90 0.92
1998 7884 7183 0.90 0.91

*Leap year