Plans are afoot to move the Auburndale Commuter Rail Station to the north side of the MBTA tracks, abandoning the existing south-side platform. This would create a long strip of unused land, south of the tracks, from the Woodland Rd. Bridge to the Grove/Lexington St. Bridge.
Being on the far north side of the Mass Pike, with great south facing exposure, makes this the perfect location for a solar array.
This idea can be entertained after the new station is built, but for now we shouldn't foreclose the opportunity for use of that strip of pavement. Mass DOT could ask an Energy Services Company (ESCO) about the site potential and to check my numbers.