The Type Ia supernova ( catalog SN~2011fe ) is one of the closest supernovae of the past decades . Due to its proximity and low dust extinction , this object provides a very rare opportunity to study the extremely late time evolution ( > 900 days ) of thermonuclear supernovae . In this Letter , we present our photometric data of ( catalog SN~2011fe ) taken at an unprecedented late epoch of \approx 930 days with GMOS-N mounted on the Gemini North telescope ( g = 23.43 \pm 0.28 , r = 24.14 \pm 0.14 , i = 23.91 \pm 0.18 , and z = 23.90 \pm 0.17 ) to study the energy production and retention in the ejecta of ( catalog SN~2011fe ) . Together with previous measurements by other groups , our result suggests that the optical supernova light curve can still be explained by the full thermalization of the decay positrons of ^ { 56 } \textrm { Co } . This is in spite of theoretical predicted effects ( e.g . infrared catastrophe , positron escape , and dust ) that advocate a substantial energy redistribution and/or loss via various processes that result in a more rapid dimming at these very late epochs .