Innovative Rates NonVolumetric Rates and Tracking Mechanisms Current

Innovative Rates, Non-Volumetric Rates, and Tracking Mechanisms: Current List As of March 2010

States with Natural Gas Revenue Decoupling As Of January 2010

Decoupling Tariffs as of March 2010 APPROVED – 35 Companies, 18 States, 22 Million Res. Customers* 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. AR – Arkansas Oklahoma AR – Arkansas Western AR – Center. Point Energy CA – Pacific Gas and Electric CA - San Diego Gas and Elec. CA – Southern California Gas CA – Southwest Gas CO – PSC of Colorado IL – Integrys - Peoples Gas IL – Integrys - North Shore Gas IN – Citizens Energy Group IN – Vectren Indiana Gas IN – Vectren Southern Indiana Gas MA – Bay State Gas MD – Baltimore Gas and Elec. MD – Washington Gas MN – Center. Point Minnesota Gas NJ – NJ Natural Gas 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. NJ – South Jersey Gas NV – Southwest Gas NY – Central Hudson Gas and Electric NY – Consolidated Edison NY – National Fuel Gas Dist. NY – National Grid Niagara Mohawk NY – Orange and Rockland Utilities NC - Piedmont Natural Gas NC – PS Co. of North Carolina OR – Cascade Natural Gas OR – NW Natural Gas UT – Questar Gas VA – Virginia Natural WA – Avista WA – Cascade Natural Gas WI – Integrys – Wisconsin Public Service Co. WY – Questar Gas PENDING – 10 Companies, 4 States, 5 Million Res. Customers* 1. 2. 3. 4. 5. KS – Kansas Gas Service MI – Consumers Energy MI – Michigan Consolidated Gas MI – Michigan Gas Utilities NH – Energy. North Natural Gas 6. 7. 8. 9. 10. NY – National Grid NYC NY – National Grid Long Island NJ – Pivotal Utility Holdings TN – Chattanooga Gas VA – Columbia Gas of Virginia * Of 65 Million (2007) US Residential Customers 2

Flat Monthly Fee Rate Design (SFV) as of January 2010 Approved – 14 Companies, 9 States, 9 Million Res. Customers* 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. FL – TECO Peoples Gas – Three-tier monthly charge plus small variable charge GA – Atlanta Gas Light – Individually determined monthly demand charge (Straight Fixed Variable) IL – Nicor Gas – Flat fee plus a small variable charge MO – Atmos Energy – Flat fee MO – Empire Gas District MO – Laclede Gas – Modified rate blocks MO – Missouri Gas Energy - $24. 69 flat monthly fee NE – Source. Gas – Modified rate blocks ND – Xcel Energy – $18. 48 flat monthly fee OH – Columbia Gas – Flat fee OH – Dominion East Ohio – Flat fee plus small variable charge OH – Duke Energy – Flat fee OK - ONEOK – Two-tier plan – Offers customers a choice TX – Texas Gas Service El Paso – $10. 80 flat fee up to 200 ccf/month Pending 15. 16. 17. 18. 19. AK – ENSTAR Natural Gas NE - Black Hills – Two-tier, declining block rate OH – Pike Natural Gas – Increased monthly charge OH – Eastern Natural Gas OH – Vectren Ohio - $18. 37 flat monthly fee – goes into effect Feb 22, 2010 * Of 65 Million (2007) US Residential Customers 3

Rate Stabilization Tariffs as of January 2010 Approved – 13 Companies, 6 States, 6 Million Res. Customers* 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. AL – Alabama Gas AL – Mobile Gas MS – Atmos Energy MS – Center. Point Energy LA – Atmos Energy LA – Center. Point Energy LA – Entergy OK – Center. Point Energy OK – Oklahoma Natural Gas SC – Piedmont Natural Gas SC – South Carolina E&G TX – Center. Point Energy TX – Atmos Energy * Of 65 Million (2007) US Residential Customers 4

States With Decoupling and Flat Monthly Fees 25 Approved, 5 Pending as of January 2010

States with Decoupling and Flat Monthly Fees as of January 2010 Approved - 48 Companies, 25 States, 31 Million Res. Customers Pending - 16 Companies, 5 States, 5 Million Res. Customers STATES WITH DECOUPLING 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Arkansas California Colorado Indiana Massachusetts Maryland New Jersey Nevada New York North Carolina Oregon Utah Virginia Washington Wisconsin Wyoming STATES WITH FLAT MONTHLY FEES 1. 2. 3. 4. 5. 6. 7. 8. Florida Georgia Missouri Nebraska North Dakota Ohio Oklahoma Texas STATES WITH BOTH FLAT MONTHLY FEES AND DECOUPLING 1. Illinois STATES WITH PENDING PROGRAMS 1. 2. 3. 4. 5. 6. Alaska – Flat Monthly Fee Kansas - Decoupling Michigan - Decoupling Minnesota – Decoupling Nebraska – Decoupling Tennessee - Decoupling 6

States with Non-Volumetric Rate Designs (Decoupling, Flat Monthly Fee, Rate Stabilization) 29 Approved, 5 Pending As Of January 2010

States with Non-Volumetric Rate Designs for Natural Gas as of January 2010 Approved - 61 Companies, 29 States, 37 Million Res. Customers STATES WITH DECOUPLING 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Arkansas California Colorado Indiana Massachusetts Maryland New Jersey Nevada New York North Carolina Oregon Utah Virginia Washington Wisconsin Wyoming STATES WITH FLAT MONTHLY FEES 1. 2. 3. 4. 5. 6. Florida Georgia Missouri Nebraska North Dakota Ohio STATES WITH RATE STABILIZATION 1. 2. 3. 4. Alabama Mississippi Louisiana South Carolina STATES WITH BOTH DECOUPLING AND FLAT MONTHLY FEES 1. Illinois STATES WITH BOTH FLAT MONTHLY FEES AND RATE STABILIZATION 1. 2. Oklahoma Texas 8

States with Weather Normalization Adjustments 25 Approved, 2 Pending as of January 2010

Weather Normalization Adjustment Clauses as of January 2010 Approved - 52 Companies, 25 States, 16 Million Res. Customers; 9 Million Res. Customers at Companies Without Decoupling 1. AB – Atco Gas 2. AL - Alabama Gas 3. AL – Mobile Gas 4. AR – Arkansas Western 5. AR - Center. Point Energy 6. BC – Terasen Gas 7. CT - Southern Connecticut Gas 8. GA - Atmos Energy 9. IN – Vectren Indiana Gas 10. IN – Vectren So. Indiana Gas and Elec. 11. KS - Atmos Energy 12. KS – Black Hills 13. KS – Kansas Gas Service 14. KY - Atmos Energy 15. KY - Columbia Gas 16. KY - Delta Natural Gas 17. KY - Louisville Gas and Electric 18. LA – Atmos - Louisiana Gas Service 19. LA - Atmos - Trans Louisiana 20. MD - Chesapeake Utilities 21. MD - Columbia Gas 22. MS - Atmos Energy 23. ND – Montana-Dakota Utilities 24. NJ - Elizabethtown Gas 25. NY - Consolidated Edison 26. NY - Key. Span Energy Delivery – NYC 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. - NY - Key. Span En. Delivery - Long Island NY - National Fuel Gas Distribution NY – National Grid NY – New York State Elec. and Gas NY - Orange & Rockland Utilities NY - Rochester Gas & Electric OK - Center. Point Energy OK – Oklahoma Natural Gas OR - NW Natural PA - Philadelphia Gas Works QB - Gaz Metro RI - National Grid SC - Piedmont Natural Gas SC - South Carolina Electric & Gas SD – Montana-Dakota Utilities TN – Atmos Energy TN - Chattanooga Gas TN - Piedmont Natural Gas TX - Atmos Energy TX - Texas Gas Service UT – Questar Gas VA – City of Richmond Dept. Pub. Utils VA - Roanoke Natural Gas VA - Southwestern Virginia Gas WV – West Virginia Utilities WY – Questar Gas 10

States with Bad Debt Cost Recovery Mechanisms as of January 2010

Utilities with Innovative Bad Debt Cost Recovery Mechanisms as of January 2010 Approved 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. CT – Connecticut Natural Gas CT - Southern Connecticut Gas CT – Yankee Gas Services DC – Washington Gas IN – Vectren Indiana Gas IN – Vectren So. Indiana Gas & Elec. KS - Atmos Energy KS – Black Hills KS – Kansas Gas Service KY – Columbia KY – Duke Energy MA – Bay State Gas MA – NSTAR Gas MA – Key. Span Boston Gas MA – Key. Span Colonial Gas MD – Baltimore Gas and Electric MD – Washington Gas ME – Northern Utilities MI – Michigan Consolidated Gas MI – Michigan Gas Utilities NC – Piedmont Natural Gas NE – Black Hills NE - Source. Gas NH – Northern Utilities NH – Key. Span Energy. North NY – Central Hudson Gas and Electric NY - Consolidated Edison NY - Key. Span – New York City NY - Key. Span - Long Island NY - National Fuel Gas Distribution NY – National Grid NY – New York State Elec. and Gas NY - Orange & Rockland Utilities NV – Southwest Gas OH – Columbia Gas Ohio OH – Dominion East Ohio OH – Eastern Natural Gas OH – Pike Natural Gas OH – Vectren Energy Ohio OK – Oklahoma Natural Gas ON – Union Gas RI - National Grid SC - Piedmont Natural Gas TN – Atmos Energy TN - Chattanooga Gas TN - Piedmont Natural Gas TX - Atmos Energy TX - Texas Gas Service UT – Questar Gas VA - Atmos Energy VA – Washington Gas WI - Wisconsin Electric – Gas Pending 1. 2. 3. 4. CA – Pacific Gas and Electric IL – Ameren IL – Peoples Gas – order due March 15, 2010 IL – North Shore Gas – order due 3 -15 -2010 5. 6. 7. 8. IL – Nicor Gas KY – Atmos Energy MI – Consumers Energy MO – Atmos Energy 13

States With Infrastructure Cost Recovery Mechanisms As Of January 2010

Infrastructure Cost Recovery Mechanisms as of January 2010 16 Million Residential Customers - Of 65 Million Customers in U. S. APPROVED - 14 States 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. AR – Center. Point Energy GA – Atlanta Gas Light IL– Integrys Peoples Gas IL– Integrys North Shore Gas IN – Vectren North – Indiana Gas IN – Vectren South – SIGECO KS – Atmos Energy KS – Black Hills KS – Kansas Gas Service KY – Columbia Gas MA – Bay State Gas MO – Atmos Energy MO – Laclede Gas MO – Missouri Gas Energy NE – Black Hills NJ – Elizabethtown Gas NJ – NJ Natural NJ – Public Service Electric and Gas NJ – South Jersey Gas NY – Corning Natural Gas NY – National Grid OH – Dominion East Ohio APPROVED 23. 24. 25. 26. 27. 28. 29. 30. OH – Duke Energy OH – Ni. Source Columbia of Ohio OH – Vectren Ohio OR – NW Natural TX – Atmos Energy TX – Center. Point Energh TX – Texas Gas Service TX – All Natural Gas Utilities PENDING - 6 Additional States 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. IL – Nicor Gas KY – Atmos Energy MN – Minnesota Energy NE – Source Gas NH – National Grid New England NY – National Grid NYC NY – National Grid Long Island RI – National Grid New England UT – Questar Gas WV – Mountaineer Gas WI – Madison Gas and Electric 5 Million Residential Customers 15

States with Natural Gas Energy Efficiency Programs in 2009

States With Revenue Trackers 34 Approved (remove OH) and 3 Pending as of January 2010

Revenue Trackers Summary as of January 2010 Revenue Decoupling • 17 states, 34 companies, 22 million residential customers Rate Stabilization Tariffs • 6 states, 13 companies, 6 million customers Weather Normalization (Partial Decoupling) • 25 states and Canada, 52 companies, 16 million US residential customers All Revenue Trackers • 78 companies, 34 states and Canada, 37 million US residential customers * Of 65 Million (2007) US Residential Customers 18

States With Cost Trackers Other than PGAs as of October 2009 (add AK, AZ, FL, HI, NV, NM)

Cost Tracker Summary as of January 2010 Gas Cost Tracker (PGA) • All states Lost and Unaccounted For Tracker (LUAF) • 47 States (excluding MI, MT, SD) Bad Debt Cost Tracker • 22 states plus DC and Canada, 52 companies, 17 million US customers ; pending 8 companies, 9 million customers Infrastructure Investment Cost Tracker • 14 states, 30 utilities, plus all in Texas, 16 million customers; pending 11 companies, 5 million customers Pension, Energy Efficiency, Pipeline Integrity Management, Inflation, Storage Cost Trackers • Growing numbers 20