Office of Regulatory Reform
Michigan.gov Home            ORR Home  |   Site Map  |   Contact ORR
                DEPARTMENT OF CONSUMER AND INDUSTRY SERVICES

                        PUBLIC SERVICE COMMISSION

                   ELECTRIC INTERCONNECTION STANDARDS

(By authority conferred on the public service commission by section 7 of 1909 
PA 106, MCL 460.557, section 5 of 1919 PA 419, MCL 460.55, and sections 4, 6, 
and 10e of 1939 PA 3, MCL 460.4, 460.6, and 460.10e)

R 460.481    Definitions.
  Rule 1.  (1)  As used in these rules:
  (a)   "Distribution  system"  means  the   structures,   equipment,     and 
facilities operated by an electric utility  to  deliver  electricity  to  end 
users,  but  it excludes transmission facilities  that  are  subject  to  the 
jurisdiction of  the federal energy regulatory commission.
  (b)  "Interconnection"  means  the  process  administered  by  an  electric 
utility to implement the electrical connection  of   a   project    with    a 
distribution system, so that parallel operation can occur.
  (c)  "Interconnection procedures" mean  the   requirements    adopted    by 
each  electric  utility  and   approved   by   the   commission   to   govern 
interconnection.
  (d)    "Project"   means   a   merchant   plant    and    other    electric 
generating equipment and associated facilities  that  are  not    owned    or 
operated  by  an electric utility.
  (e)  "Project developer" means a person that owns, operates,  or   proposes 
to construct, own, or operate, a project.
  (2)  A term defined in section 10g of 1939 PA 3, MCL  460.10g,   has    the 
same meaning when used in these rules.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.482    Electric utility interconnection procedures.
  Rule 2.  (1)  Each  electric  utility  shall  file  an   application    for 
approval of proposed interconnection  procedures  within  90  days   of   the 
effective  date of these rules.  Two or more electric utilities  may  file  a 
joint  application proposing a single set of interconnection procedures.
  (2)   The   commission   may   approve,   modify,     or     reject     the 
proposed interconnection procedures.  The commission shall issue its approval
 if  the procedures, as  proposed  by  the   electric   utility    or    with 
modifications  required  by  the  commission,  meet  all  of  the   following 
requirements:
  (a)  Describe the steps  necessary  to  effect  the   connection    of    a 
merchant plant or other project with the distribution system of the  electric 
utility.
  (b)  Designate a single point of contact at the  electric    utility    for 
all communications about interconnection.
  (c)   Are  consistent  with  generally   accepted    industry     practices 
and guidelines.
  (d)   Ensure  the  reliability  of  electric  service  and  the  safety  of 
customers, utility employees, and the general public.
  (e)  Ensure compliance with these rules.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.483    Technical criteria.
  Rule  3.    (1)    The   interconnection    procedures    shall     specify 
technical, engineering, and operational requirements that  are  suitable  for 
the  electric utility's distribution system.  The  procedures  shall  include 
provisions  that apply specifically to a project that designates some or  all 
of its electrical output for sale to an electric utility or a third party.
  (2)   The  interconnection  procedures  shall   make    provisions     that 
are appropriate for the size and  capacity  of  a  project  as  they   affect 
the technical and  engineering  complexity  of  the   interconnection.    The 
procedures shall include a distinct set  of  requirements  for  each  of  the
 following project capacity classifications:
  (a)  Less than 30 kilowatts.
  (b)  Thirty kilowatts or more, but less than 150 kilowatts.
  (c)  One hundred and fifty kilowatts or more, but less than 750 kilowatts.
  (d)  Seven hundred and fifty kilowatts or more, but less than 2 megawatts.
  (e)  Two megawatts or more.
  (3)  If the voltage at  the  electrical  connection  is    comparable    to 
the electric  utility's   transmission   voltages,    but    the     electric 
utility's facilities  are  classified  as  part   of     its     distribution 
system   for jurisdictional purposes, such as a radial line,   the    project 
shall  not  be subject to the  interconnection  procedures   approved   under 
these  rules.   The  interconnection  shall  instead  comply  with  analogous 
federal energy regulatory commission standards.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.484    Project application.
  Rule 4.  (1)  The interconnection procedures shall prescribe a process  for 
a project developer to apply to an electric utility for  an  interconnection.
The  procedures  may  include  a  standard  form  application.   A   separate 
application shall be required for each project or project site.
  (2)  An electric utility shall  acknowledge  receipt  of   an   application 
within 3 days, excluding Saturdays, Sundays, and other days when the  offices 
of  the electric utility are not open to the public.
  (3)  If the developer has paid the filing fee provided  in    R    460.485, 
the electric utility shall conduct an  initial  review  of  the   application 
and provide the project developer 2 hours of consultation relating   to   the 
review in exchange for the  fee.   The  consultation  shall  include  a  good
 faith  estimate  of  the  electric  utility's  charges   to   complete   the 
interconnection.
  (4)  The interconnection procedures shall set a reasonable   deadline   for 
the electric utility to make an initial response  to  the  application.   The 
initial response  shall  indicate  whether   the     application     complies 
with   the interconnection procedures and the standards set forth  in   these 
rules  and identify any information required to complete the  application  or
 bring  it into  compliance.    If   an   electric   utility    rejects    an 
application   for interconnection  or  otherwise  withholds  interconnection, 
then it shall provide the project developer with a written explanation of the 
reasons, which  shall be based on demonstrably valid technical,  reliability, 
or safety criteria.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.485    Project filing fee.
  Rule 5.  (1)  A project developer shall  pay  the  electric    utility    a 
filing fee calculated as $0.50 per kilowatt of project capacity,  but  in  no
 event shall the amount of the fee be less than $100 or more than $500.
  (2)  An electric utility may not charge additional  fees,    unless    they 
are authorized by these rules.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.486    Interconnection deadlines.
  Rule 6.   (1)   The  interconnection  procedures  shall    set    deadlines 
for processing an application filed  by  a  project   developer,    achieving 
major milestones, and completing  the  interconnection  and  shall   preclude 
undue delay.  The deadlines shall ensure that the period  from    the    date 
that  the project developer files a complete application to  the   completion 
of  all  of the electric utility's obligations for interconnection  shall  be
 no  longer than the following for each project capacity classification:
  (a)  Less than 30 kilowatts 2 weeks
  (b)  Thirty kilowatts or more, but less than 150 kilowatts 4 weeks
  (c)  One hundred and fifty kilowatts or more, but less than 750   kilowatts 
6 weeks
  (d)  Seven hundred and fifty kilowatts or more, but less than  2  megawatts 
12 weeks
  (e)  Two megawatts or more 18 weeks
  (2)  Delays that are the responsibility of the project   developer    shall 
not be included in determining compliance with the  deadlines   imposed    in 
subrule
  (1) of this rule.
  (3)  Delays that are  solely  attributable  to  time  lapsed    while    an 
electric utility is diligently seeking to secure  a    necessary    easement, 
right-of-way access, or other change  in  property  rights  or  comply   with 
governmental permitting or zoning  requirements  shall  not  be  included  in
 determining compliance with the deadlines imposed in  subrule  (1)  of  this 
rule.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.487    Additional services provided by electric utility.
  Rule 7.  (1)  The interconnection procedures shall state  the    conditions 
in which engineering studies or physical construction  or   modification   of 
the electric utility's distribution system  are  required  to  facilitate  or 
complete an interconnection.  If any of those services  are  necessary,   the 
electric utility and the project developer shall make a  written    agreement 
that  sets forth the charges and other terms and conditions.   The   electric 
utility  may prescribe  standardized  agreement  forms  as  part    of    its 
interconnection procedures.
  (2)  The interconnection procedures shall set forth a   uniform    schedule 
of charges for engineering studies.  The charges shall not exceed the  lesser 
of either of the following:
  (a)  Five percent of the estimated total cost of the project.
  (b)  Ten thousand dollars.
  (3)  The interconnection  procedures  shall  not   require,    or    impose 
charges for, engineering studies if the project's aggregate  export  capacity 
is  less than 15% of the line section peak load and the project   does    not 
contribute more than  25%  of  the  maximum  short  circuit  current  at  the
 point  of interconnection.
  (4)  An agreement may impose charges for  the  electric   utility's    cost 
of making physical modifications to its distribution  system,   which   shall 
not exceed reasonable, actual costs.
  (5)  An agreement required  by  this  rule  shall  set  deadlines  for  the 
electric utility to  perform  its  obligations.   The  deadlines   shall   be 
consistent  with the requirements  in  R  460.486(1).   If    the    electric 
utility  is  unable  to perform its obligations within  the  deadlines,  then 
the project developer  may choose to retain  a  contractor  from  a  list  of 
certified  contractors  maintained  by  the  electric   utility,   and    the 
contractor   shall   perform   the   remaining  services   and   construction 
activities that are necessary to   comply   with   the   electric   utility's 
specifications.   The  interconnection  procedures  shall include the list of 
certified contractors   that   are   capable   of   performing  services  and 
construction under this subrule.  The electric utility  may  not withhold  or
 deny    certification     from     any     contractor     that      requests 
certification and demonstrates the requisite capabilities.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.488    Pre-certified equipment.
  Rule  8.   The  interconnection  procedures  shall    include    provisions 
for creating and maintaining an up-to-date listing  of  pre-certified  types, 
makes, and models of manufactured  generating  equipment.     The    electric 
utility's listing may reference or  incorporate   listings    of    equipment 
certified  by recognized national  testing  laboratories  as   suitable   for 
connection  with  a distribution system.  The electric utility shall  include 
an item of equipment in   its   pre-certified   list   if   the    item    is 
generally   acceptable   for interconnection with the distribution system and 
a  detailed  review  of  the item's engineering design,  characteristics,  or 
suitability is  not  necessary to  approve  its  use  or  installation  by  a 
project developer.

  History: 2003 MR 18, Eff Sept. 23, 2003.


R 460.489    Waivers.
  Rule 9.  An electric  utility  may  apply  for  a  waiver   from    1    or 
more provisions of these rules.  The Commission may grant a waiver   upon   a 
showing of good cause.

  History: 2003 MR 18, Eff Sept. 23, 2003. 



Michigan.gov Home  |   ORR Home  |   State Web Sites
Privacy Policy  |   Link Policy  |   Accessibility Policy  |   Security Policy
Copyright © 2002 State of Michigan