In all Residence Districts, the Board of Standards and Appeals may permit the uses set forth in paragraph (a) of this Section, provided that the findings set forth in paragraph (b) are met.
 

1. The Board may permit the following uses:
   
   Electric or gas utility substations, limited in each case to a site of not more than 10,000 square feet;
   
   Potable water pumping stations;
   
   Telephone exchanges or other communications equipment structures; or
   
   Energy infrastructure equipment, without size restriction.
2. In order to grant such permit, the Board shall find:
   1. that such use will serve the residential area within which it is proposed to be located;
   2. that there are serious difficulties in locating it in a district wherein it is permitted as of right and from which it could serve the residential area, which make it necessary to locate such use within a Residence District; and
   3. in the case of such electric or gas utility substations or potable water pumping stations, that the site for such use has a minimum lot area of 4,500 square feet.

The Board may prescribe appropriate conditions or safeguards to minimize adverse effects on the character of the surrounding area.