Entergy Arkansas Inc. (EAI) applied Jan. 19 at the Arkansas Public Service Commission for a Certificate of Public Convenience and Necessity for the transmission facilities needed to interconnect the 81-MW Stuttgart Solar project to its system.
EAI proposes to construct and operate a new 115 kV Switching Station consisting of two 115-kV transmission line segments and a 115-kV, 3-breaker ring bus arrangement and other associated facilities to provide a generation access point to a solar photovoltaic facility being constructed by Stuttgart Solar LLC in Arkansas County. The proposed interconnection facilities will be constructed on existing EAI transmission right-of-way (ROW) and on lands purchased by Stuttgart Solar. No additional ROW will be required.
The Proposed Switching Station site is approximately 0.2 miles north of the intersection of Goodwin Road and Holdridge Road in Arkansas County. The two connecting line segments will be located along the east side of Goodwin Road, in the northeast quadrant of the intersect point with the Stuttgart Ricuskey Substation to Gillett Substation 115 kV Transmission Line and Goodwin Road.
Operation of these facilities would be coordinated by the System Operations Center via supervisory control with oversight by the Midcontinent Independent System Operator (MISO). The company projects a life expectancy of 40 years for these facilities based upon depreciation studies that estimate the remaining life of transmission lines and other facilities depending on the maintenance and improvements performed on them.
Stuttgart Solar is constructing its 81-MW solar photovoltaic facility adjacent to the Stuttgart Ricuskey to Gillett 115 kV Transmission Line, on a 500-acre tract of land approximately seven miles southeast of Stuttgart. In September 2015, the commission approved as being in the public interest a 20-year purchase power agreement between EAI and Stuttgart Solar. EAI and MISO also have negotiated a Generator Interconnection Agreement with Stuttgart Solar.