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Information

The South Carolina Office of Regulatory Staff is moving to a new location. Although our telephone numbers and email addresses will remain the same, effective May 12, 2025, our new physical and mailing address will be 1901 Main St., Suite 1500, Columbia, SC 29201.

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Integrated Resource Plans

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  2. Focus Areas
  3. State Energy Plan
  4. Integrated Resource Plans
Integrated Resource Plans (IRPs)

What is an integrated resource plan (IRP)?

Integrated resource plans (IRPs) are electricity providers’ plans for meeting projected customer demand for at least a 15-year period in an economical and reliable way, while maintaining flexibility and considering environmental consequences.

Who prepares IRPs? How often?

Electricity providers prepare IRPs at least every three years. The term ‘electricity providers’ includes investor-owned electrical utilities (IOUs),the South Carolina Public Service Authority (Santee Cooper), electric cooperatives, and municipally owned electric utilities. IOUs must also submit annual updates to their IRPs.


Investor-Owned Utilities (IOUs)

Investor-owned utilities (IOUs) submit their IRPs to the Public Service Commission of South Carolina (PSC). The PSC will review each IRP and must approve, modify, or deny an IRP within 300 days. Interested parties may also intervene (please see the PSC website for more information). If the PSC modifies or rejects an IRP, the IOU has 60 days to submit a revised plan. The ORS will then review the plan and report its findings to the PSC. Then, the PSC has 60 days to accept the plan or require further changes.   

IOUs must also submit annual updates to their respective IRPs. These updates describe how changes in assumptions impact the plan. The ORS reviews annual updates and provides a recommendation to the PSC. The PSC can accept the updates or require changes.

If an IOU seeks permission from the PSC to build a generation plant of more than 75 MW or transmission of 125 kV or more, the PSC may require that the facility is consistent with that IOU’s IRP.

Dominion Energy South Carolina

  • 2023 Dominion Energy South Carolina IRP (PDF)
  • Updates and additional information on the 2023 Dominion Energy South Carolina IRP

Duke Energy Carolinas/Progress

  • 2023 Duke Energy Carolinas/Progress IRP

Lockhart Power 

  • 2023 Lockhart Power IRP (PDF)

South Carolina Public Service Authority (Santee Cooper)

Santee Cooper must develop its IRP in consultation with its electric cooperative and municipal utility customers. Santee Cooper submits its IRP to the SC Public Service Commission.

  • 2023 Santee Cooper IRP (PDF)
  • Updates on the 2023 IRP

Electric Cooperatives

Distribution electric cooperatives (i.e., that do not provide generation or transmission) that are members of a wholesale cooperative, such as Central Electric Power Cooperative, may coordinate and consolidate their IRP into a single plan. Electric Cooperatives submit their IRPs to the Energy Office.

  • 2023 Central Electric Power Cooperative IRP (PDF)

Municipal Utilities

Municipal utilities submit their IRPs to the Energy Office.

  • 2023 City of Clinton IRP (PDF)
  • 2023 Easley Combined Utilities IRP (PDF)
  • 2023 Gaffney Board of Public Works IRP (PDF)
  • 2023 City of Georgetown IRP (PDF)
  • 2023 Greenwood Public Works IRP (PDF)
  • 2023 McCormick Commission of Public Works IRP (PDF)
  • 2023 City of Rock Hill IRP (PDF)
  • 2023 City of Newberry IRP (PDF)
  • 2023 Bamberg Board of Public Works IRP (PDF)
  • 2023 City of Camden IRP (PDF)
  • 2023 Seneca Light & Water IRP (PDF)
  • 2023 Laurens Commission of Public Works IRP (PDF)
  • 2023 City of Westminster IRP (PDF)
  • 2023 City of Bennettsville IRP (PDF)
  • 2023 City of Union IRP (PDF)
  • 2023 City of Abbeville Public Utilities IRP (PDF)
  • 2023 Town of Prosperity IRP (PDF)
  • 2023 Town of Due West IRP (PDF)
  • 2024 City of Orangeburg Public Utilities IRP (PDF)
  • 2023 Town of Winnsboro IRP (PDF)
  • 2024 Greer Commission of Public Works IRP (PDF)

View Past IRPs



  • 2020 Dominion Energy South Carolina IRP (PDF)
  • 2019 Dominion Energy South Carolina IRP (PDF)
  • 2019 (Energy Office Comments) (PDF)
  • 2018 Dominion Energy South Carolina IRP (PDF)
  • 2018 (Energy Office Comments) (PDF)
  • 2017 Dominion Energy South Carolina IRP (PDF)
  • 2016 Dominion Energy South Carolina IRP (PDF)
  • 2015 Dominion Energy South Carolina IRP (PDF)
  • 2014 Dominion Energy South Carolina IRP (PDF)
  • 2013 Dominion Energy South Carolina IRP (PDF)
  • 2012 Dominion Energy South Carolina IRP (PDF)
  • 2011 Dominion Energy South Carolina IRP (PDF)
  • 2009 Dominion Energy South Carolina IRP (PDF)
  • 2008 Dominion Energy South Carolina IRP (PDF)
  • 2007 Dominion Energy South Carolina IRP (PDF)
  • 2007 (revision) (PDF)
  • 2006 Dominion Energy South Carolina IRP (PDF)
  • 2005 Dominion Energy South Carolina IRP (PDF)
  • 2004 Dominion Energy South Carolina IRP (PDF)
  • 2003 Dominion Energy South Carolina IRP (PDF)
  • 2001 Dominion Energy South Carolina IRP (PDF)
  • 2000 Dominion Energy South Carolina IRP (PDF)
  • 1998 Dominion Energy South Carolina IRP (PDF)
  • 1997 Dominion Energy South Carolina IRP (PDF)
  • 1996 Dominion Energy South Carolina IRP (PDF)
  • 1995 Dominion Energy South Carolina IRP (PDF)
  • 1994 (gas) (PDF)
  • 1992 (peak demand forecast methodology) (PDF)
  • 1992 (electric methodology and forecasts) (PDF)
  • 1992 Dominion Energy South Carolina IRP (PDF)

Duke Energy Carolinas

Duke Energy Progress


  • 2020 Duke Energy Carolinas IRP (PDF)
  • 2020 Duke Energy Carolinas Modified IRP (PDF)
  • Updates on the 2020 IRP
  • 2019 Duke Energy Carolinas IRP (PDF)
  • 2018 Duke Energy Carolinas IRP (PDF)
  • 2018 (Energy Office Comments) (PDF)
  • 2017 Duke Energy Carolinas IRP (PDF)
  • 2016 Duke Energy Carolinas IRP (PDF)
  • 2015 Duke Energy Carolinas IRP (PDF)
  • 2014 Duke Energy Carolinas IRP (PDF)
  • 2013 Duke Energy Carolinas IRP (PDF)
  • 2012 Duke Energy Carolinas IRP (PDF)
  • 2011 Duke Energy Carolinas IRP (PDF)
  • 2010 Duke Energy Carolinas IRP (PDF)
  • 2009 Duke Energy Carolinas IRP (PDF)
  • 2008 Duke Energy Carolinas IRP (PDF)
  • 2008 (revision) (PDF)
  • 2007 Duke Energy Carolinas IRP (PDF)
  • 2007 (revision) (PDF)
  • 2006 Duke Energy Carolinas IRP (PDF)
  • 2006 (spring forecast) (PDF)
  • 2005 Duke Energy Carolinas IRP (PDF)
  • 2001 Duke Energy Carolinas IRP (PDF)
  • 2000 Duke Energy Carolinas IRP (PDF)
  • 1999 Duke Energy Carolinas IRP (PDF)
  • 1998 Duke Energy Carolinas IRP (PDF)
  • 1997 Duke Energy Carolinas IRP (PDF)
  • 1996 Duke Energy Carolinas IRP (PDF)
  • 1995 Duke Energy Carolinas IRP (PDF)
  • 1993 Duke Energy Carolinas IRP (PDF)
  • 1992 Duke Energy Carolinas IRP (PDF)
  • 1992 (forecast data) (PDF)
  • 2020 Duke Energy Progress IRP (PDF)
  • 2020 Duke Energy Progress Modified IRP (PDF)
  • Updates on the 2020 IRP
  • 2019 Duke Energy Progress IRP (PDF)
  • 2018 Duke Energy Progress IRP (PDF)
  • 2018 (Energy Office Comments) (PDF)
  • 2017 Duke Energy Progress IRP (PDF)
  • 2016 Duke Energy Progress IRP (PDF)
  • 2015 Duke Energy Carolinas IRP (PDF)
  • 2014 Duke Energy Progress IRP (PDF)
  • 2013 Duke Energy Progress IRP (PDF)
  • 2012 Duke Energy Progress IRP (PDF)
  • 2011 Duke Energy Progress IRP (PDF)
  • 2010 Duke Energy Carolinas IRP (PDF)
  • 2009 Duke Energy Progress IRP (PDF)
  • 2008 Duke Energy Progress IRP (PDF)
  • 2007 Duke Energy Progress IRP (PDF)
  • 2006 Duke Energy Progress IRP (PDF)
  • 2005 Duke Energy Progress IRP (PDF)
  • 2004 Duke Energy Progress IRP (PDF)
  • 2003 Duke Energy Progress IRP (PDF)
  • 2002 Duke Energy Progress IRP (PDF)
  • 2001 Duke Energy Progress IRP (PDF)
  • 2000 Duke Energy Progress IRP (PDF)
  • 1999 Duke Energy Progress IRP (PDF)
  • 1998 Duke Energy Progress IRP (PDF)
  • 1997 Duke Energy Progress IRP (PDF)
  • 1996 Duke Energy Progress IRP (PDF)
  • 1995 Duke Energy Progress IRP (PDF)
  • 1992 Duke Energy Progress IRP (PDF)
  • 1992 (energy and peak load forecast) (PDF)


  • 2020 Lockhart Power IRP (PDF)
  • Modified 2020 Lockhart Power IRP (PDF)
  • Updates on the 2020 IRP
  • 2019 Lockhart Power IRP (PDF)
  • 2018 Lockhart Power IRP (PDF)
  • 2017 Lockhart Power IRP (PDF)
  • 2016 Lockhart Power IRP (PDF)
  • 2014 Lockhart Power IRP (PDF)
  • 2013 Lockhart Power IRP (PDF)
  • 2012 Lockhart Power IRP (PDF)
  • 2011 Lockhart Power IRP (PDF)
  • 2010 Lockhart Power IRP (PDF)
  • 2009 Lockhart Power IRP (PDF)
  • 2008 Lockhart Power IRP (PDF)
  • 2005 Lockhart Power IRP (PDF)
  • 1999 Lockhart Power IRP (PDF)
  • 1996 Lockhart Power IRP (PDF)


  • 2020 Santee Cooper IRP (PDF)
  • 2018 Santee Cooper IRP (PDF)
  • Energy Office Comments on Santee Cooper 2018 IRP (PDF)
  • 2017 Santee Cooper IRP (PDF)
  • 2016 Santee Cooper IRP (PDF)
  • 2015 Santee Cooper IRP (PDF)
  • 2014 Santee Cooper IRP (PDF)
  • 2013 Santee Cooper IRP (PDF)
  • 2012 Santee Cooper IRP (PDF)
  • 2011 Santee Cooper IRP (PDF)
  • 2010 Santee Cooper IRP (PDF)
  • 2009 Santee Cooper IRP (PDF)
  • 2008 Santee Cooper IRP (PDF)
  • 2006 Santee Cooper IRP (PDF)
  • 2003 Santee Cooper IRP (PDF)
  • 2002 Santee Cooper IRP (PDF)
  • 2001 Santee Cooper IRP (PDF)
  • 2000 Santee Cooper IRP (PDF)
  • 1999 Santee Cooper IRP (PDF)
  • 1998 Santee Cooper IRP (PDF)
  • 1998 (Generation Resource Plan) (PDF)
  • 1997 Santee Cooper IRP (PDF)
  • 1996 Santee Cooper IRP (PDF)
  • 1995 Santee Cooper IRP (PDF)
  • 1994 Santee Cooper IRP (PDF)
  • 1994 (analysis) (PDF)
  • 1993 Santee Cooper IRP (PDF)
  • 1993 (load forecast) (PDF)

  • 2020 Central Electric Power Cooperative IRP (PDF)

  • 2020 City of Clinton IRP (PDF)
  • 2020 Easley Combined Utilities IRP (PDF)
  • 2020 Gaffney Board of Public Works IRP (PDF)
  • 2020 City of Georgetown IRP (PDF)
  • 2020 Greenwood Public Works IRP (PDF)
  • 2020 McCormick Commission of Public Works IRP (PDF)
  • 2020 City of Rock Hill IRP (PDF)
  • 2020 City of Newberry IRP (PDF)
  • 2020 Bamberg Board of Public Works IRP (PDF)
  • 2020 City of Camden IRP (PDF)
  • 2020 Seneca Light & Water IRP (PDF)
  • 2020 Laurens Commission of Public Works IRP (PDF)
  • 2020 City of Westminster IRP (PDF)
  • 2020 City of Bennettsville IRP (PDF)
  • 2020 City of Union IRP (PDF)
  • 2020 City of Abbeville Public Utilities IRP (PDF)
  • 2020 Town of Prosperity IRP (PDF)
  • 2020 Town of Due West IRP (PDF)
  • 2020 City of Orangeburg Public Utilities IRP (PDF)
  • 2020 Town of Winnsboro IRP (PDF)
  • 2024 Greer Commission of Public Works IRP (PDF)

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Office of Regulatory Staff

1901 Main Street, Suite 1500

Columbia, SC 29201

 

General Information: (803) 737-0800

Consumer Complaints and Inquiries:

(803) 737-5230 (local)

1-800-922-1531 (toll-free within South Carolina)


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