Section 135-H. Installation

1.  A utility shall afford each participant in
  its home conservation plan the option of installing energy  conservation
  measures  either (a) by performing the work on a "do-it-yourself" basis,
  where deemed safe and feasible by the commission, under  guidelines  set
  by  the  commission for assuring quality and conformance with applicable
  criteria; (b) through the  use  of  services  provided  by  the  utility
  itself, if the utility decides to offer such services provided, however,
  that  in offering such services, the utility shall contract, through the
  use of prevailing competitive bidding processes, with persons, firms and
  corporations not owned or operated by such utility for the  installation
  of energy conservation measures; or, (c) through the use of the services
  of  a  contractor  and/or  supplier of the customer's choice, whose name
  appears on a list of qualified contractors and/or  suppliers  maintained
  and periodically updated by the utility.
    2.  In  implementing paragraph (a) of subdivision one of this section,
  the utilities, in consultation with  the  commission,  shall  prepare  a
  "do-it-yourself"  manual  for  the  customers  it  serves, detailing the
  materials capable of being used, their manner of effective installation,
  and  the  criteria  used  in  inspection  to  determine  the  degree  of
  effectiveness.  With  reference to all installations to be made pursuant
  to paragraphs (a) and (c)  of  subdivision  one  of  this  section,  the
  utility shall prepare and maintain a list of qualified and participating
  suppliers  and  contractors in a non-discriminatory manner. The decision
  as to which option, supplier, or contractor to use is the choice of  the
  customer.