U.S. Heating and Cooling Degree Day Summary

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U.S. Heating and Cooling Degree Day Summary Updated 7/6/7 AM 8 6 U.S. Gas Weighted HDD Summary U.S. Population Weighted CDD Summary Obs/ Difference in Total/Forecast from Pop Weighted Obs/ Difference

Last Week - 3 3 3 3 Last Week 68 - -7-8 -7 - This Week -3 - - - This Week 9 8 9 Next Week Next Week 93 - US Gas Weighted HDD and US Population Weighted CDD Text Summary Season to Date HDDs are DDs

1 U.S. Heating and Cooling Degree Day Summary Updated 7/6/7 AM 8 6 U.S. Gas Weighted HDD Summary U.S. Population Weighted CDD Summary Obs/ Difference in Total/Forecast from Pop Weighted Obs/ Difference in Total/Forecast from Fcst Last Prev Last Yr Yr CDD Summary Fcst Last Prev Last Yr Yr Period Total Fcst Week Year Avg Avg Period Total Fcst Week Year Avg Avg July -to-date - - Jan -to-date Last Week Last Week This Week This Week Next Week Next Week 93 - US Gas Weighted HDD and US Population Weighted CDD Text Summary Season to Date HDDs are DDs (8%) below last year and DDs (39%) below the year average. This week will see 3 fewer HDDs than last week, fewer HDDs than last year, fewer HDDs than the yr Avg. Next week will see fewer HDDs than this week, fewer HDDs than last year, more HDDs than the yr Avg. Season to Date CDDs are 3 DDs (%) above last year and 7 DDs (%) above the year average. This week will see more CDDs than last week, 8 more CDDs than last year, more CDDs than the yr Avg. Next week will see more CDDs than last week, fewer CDDs than last year, more CDDs than the yr Avg. US Gas Weighted HDDs Last Two Months Plus Day Forecast HistMin Yr-Stdev Previous Forecast Current Year Obs/Fcst Yr Max/Avg/Min Last Year Today May-7 May- May- May-8 Jun- Jun- Jun-8 Jun- Jul- Jul-9 US Population Weighted CDDs Last Two Months Plus Day Forecast Historical Min Yr-Stdev Previous Forecast Current Year Obs/Fcst Yr Max/Avg/Min Last Year Today Jul-6 Jul May-7 May- May- May-8 Jun- Jun- Jun-8 Jun- Jul- Jul-9 Jul-6 Jul-3 HDDs 3 3 Year Average Distribution of Gas Weighted HDDs 3 Year Average Distribution of Pop Weighted CDDs Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec The heating season is currently <% complete. The cooling season is currently ~37% complete. CDDs 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

2 Gas Weighted HDD & Pop Weighted CDD Trends Updated 7/6/7 AM Season to Date Gas Weighted HDDs Daily Gas Weighted HDDs Weekly U.S. Gas Weighted HDDs top of gray bar is value in days 7 6/6 7/ 7/6 7/ 7/6 TY LY yr Range / / /9 6/ 6/6 6/3 7/ TY LY yr Range Season to Date Pop Weighted CDDs top of gray bar is value in days Daily Pop Weighted CDDs 6/6 7/ 7/6 7/ 7/6 TY LY yr Range Heating/Cooling Year Degree Day Rankings (July-June for HDDs and January-December for CDDs) Gas Weighted HDDs Expected HDDs in Days Pop Weighted CDDs Expected CDDs in Days Rank Year HDDs Rank Year HDDs Rank Year CDDs Rank Year CDDs Median 987 Median 3 Median 8 73 Median WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited. 8 6 Weekly U.S. Pop Weighted CDDs / / /9 6/ 6/6 6/3 7/ TY LY yr Range

3 Heating Oil and Propane Weighted HDD Trends Updated 7/6/7 AM Season to Date HO Weighted HDDs Daily Heating Oil Weighted HDDs Weekly Heating Oil Weighted HDDs top of gray bar is value in days 7 6/6 7/ 7/6 7/ 7/6 TY LY yr Range / / /9 6/ 6/6 6/3 7/ TY LY yr Range 8 Season to Date Propane HDDs Daily Propane Weighted HDDs 8 Weekly Propane Weighted HDDs ` top of gray bar is value in days 7 6/6 7/ 7/6 7/ 7/6 TY LY yr Range / / /9 6/ 6/6 6/3 7/ TY LY yr Range July-June Heating Season-to-Date Heating Oil and Propane Weighted HDD Rankings H.O. Weighted HDDs Expected HDDs in Days Propane Wghtd HDDs Expected HDDs in Days Rank Year HDDs Rank Year HDDs Rank Year HDDs Rank Year HDDs Median 99 Median Median 8 Median WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

4 Population and Gas Weighted Degree Day Forecasts Updated 7/6/7 AM Weekly U.S. Population Weighted Degree Day Totals Week Pop Weighted HDDs (New) Pop Weighted CDDs (New) Combo DDs (HDDs+.7*CDDs) Old Combo Pop Weighted DDs Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg //7 3 () 3 () 9 () /8/7 () 7 9 () 9 8 () //7 () 7 () 9 6 () //7 () 3 8 () 7 8 () 6 3 /9/7 3 () 39 6 () 3 () 8 6 /6/7 () 7 3 () () //7 9 () 9 3 () 6 6 () /9/7 9 () 8 7 () 6 3 () 7 7 6/6/7 () 79 () () 6 6 6/3/7 () 3 8 () () /3/7 3 () 68 () 86 8 () /7/7 () 9 () () //7 () 93 () () //7 () 96 () 9 69 (3) R squared to EIA Number* *over last weeks Values in parenthesis are the change from the previous report. Red numbers correspond to file locations on last page. Weekly U.S. Population Weighted Degree Day Total Estimates from Model Projections Forecast Source 7/7/7 7//7 7//7 Z GFS (7/6/7) Z GFS (7//7) Z GFS (7//7) 8Z GFS (7//7) Z GFS ENS (7/6/7) Z GFS ENS (7//7) Z Euro (7/6/7) Z Euro (7//7) Z Euro ENS (7/6/7) Z Euro ENS (7//7) Max Total FW Forecast Model Average /9/7 7//7 7/9/7 7//7 7/9/7 Min Total If 7//7 is beyond end of model run, missing days are filled in with FW forecast values. Gas Weighted HDDs, Gas & Electric Heating Weighted HDDs, and Gas & Electric HDDs + PW CDDs Week Gas R&C Weighted HDDs 3 Gas + Electric Heating HDD Blend 3 Gas + Elec HDDs + PW CDDs Old Gas Weighted DDs* Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg //7 37 () () 36 () /8/7 6 () 8 6 () 9 6 () //7 6 () 78 6 () 6 () //7 69 () 3 () () /9/7 () () 8 3 () /6/7 8 () 7 () 7 () //7 6/9/7 () () 6 9 () 8 () 8 () () /6/7 6/3/7 6/3/7 () () () 3 3 () () () 6 () 6 () 3 () /7/7 () () 67 () //7 () () 68 () //7 () () 69 (3) R squared to EIA Number* *over last weeks Values in parenthesis are the change from the previous report. *Old DDs also tried to account for electric heat impacting gas power generation. 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited. PWHDD +.7 * PWCDD Total

5 HO & Propane HDDs, PADD Region Breakdown Updated 7/6/7 AM Heating Oil and Propane Weighted Data Week NEW US H. Oil Weighted HDDs 6 US Propane Weighted HDDs 6 Old Oil Weighted HDDs Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg //7 63 () 73 8 () /8/7 7 () 7 97 () //7 () () //7 8 () 63 3 () /9/7 () () /6/7 3 () 7 () //7 3 () 3 () 3 3 6/9/7 8 () 8 7 () 6 6 6/6/7 3 () 7 () 7 7 6/3/7 () () 3 6/3/7 3 () () 7/7/7 () () 7//7 () () 7//7 () () Values in parenthesis are the change from the previous report. Red numbers correspond to file locations on last page. PADD Region and Sub-Region Population Weighted HDDs 7 Week Total PADD (East Coast) HDDs PADD A (New England) HDDs PADD B (Central Atl.) HDDs PADD C (Lower Atl) HDDs Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg //7 33 () 8 87 () () 6 67 () 3 /8/7 () () 99 9 () 8 9 () //7 6 () 8 68 () 9 37 () 9 6 () 3 //7 () 3 96 () 77 8 () 6 33 () 3 7 /9/7 3 () 36 () () 33 () 9 /6/7 8 () () 3 3 () 3 () 7 6//7 () 7 () () 9 () 6/9/7 () 8 6 () 9 () 6 () 6/6/7 () 3 () 6 () 6 3 () 6/3/7 () () 6 () () 6/3/7 () () 3 () () 7/7/7 () () () () 7//7 () () () () 7//7 () () () () Values in parenthesis are the change from the previous report. -- See last page for a map of PADD regions. -- PADD Regions - Population Weighted HDDs 7 Week PADD (Midwest) HDDs PADD 3 (Gulf Coast) HDDs PADD (Rocky Mntns) HDDs PADD * (West Coast) HDDs Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg //7 3 () 3 7 () () () 9 /8/7 6 () 6 88 () 9 3 () () 3 3 //7 86 () 78 7 () 8 () 83 7 () //7 6 () () 3 () () 7 /9/7 8 () 7 () 8 () () 6 /6/7 3 () () 6 () 9 9 () 9 6//7 8 () () 3 () 39 3 () 9 6/9/7 () 7 9 () 7 () 3 9 () 9 6/6/7 () 3 () 7 () 3 () 9 6/3/7 () () 6 () 9 () 6 7 6/3/7 6 () () 9 () 3 () 7/7/7 () () () 3 () 3 7//7 () () () 6 3 () 3 3 7//7 () () () () Values in parenthesis are the change from the previous report. *Excludes AK and HI 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

Census Region Degree Day Forecasts Updated 7/6/7 AM Population Weighted Degree Day Totals by Cenus Region and Sub-Region Degree Day Totals = HDDs +.

3 () 9 3 3 () 3 9 6/6/7 () 7 9 6 () 6/3/7 7 () 38 3 () 6/3/7 38 () 8 () 8 8 7/7/7 () 9 7 () 36 7 7//7 6 () 6 () 6 3 7//7 (3) 67 63 () 7 6 Values in parenthesis are the change from the previous report.

Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg /9/7 7 () 6 8 9 () 3 () 83 6 () 78 9 /6/7 3 () 9 38 3 () 3 3 38 () 3 7 () 8 39 6//7 3 () 33 3 () 8 () 3 9 () 3 6/9/7 6 () 3 33 7 () 3 8 7 () 9 7 () 3

66 () 66 66 Values in parenthesis are the change from the previous report. Red numbers correspond to file locations on last page.

6 Census Region Degree Day Forecasts Updated 7/6/7 AM Population Weighted Degree Day Totals by Cenus Region and Sub-Region Degree Day Totals = HDDs +.7 * CDDs Week Northeast Region Degree Days 8 Midwest Region Degree Days 8 Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg /9/7 6 () () 8 6 /6/7 38 () () 3 3 6//7 8 () 7 () /9/7 3 () () 3 9 6/6/7 () () 6/3/7 7 () 38 3 () 6/3/7 38 () 8 () 8 8 7/7/7 () 9 7 () //7 6 () 6 () 6 3 7//7 (3) () 7 6 Values in parenthesis are the change from the previous report. Midwest and Northeast Sub-Regions Week New England DD Totals 9 Middle Atlantic DD Totals 9 East North Central DD Totals 9 West North Central Totals 9 Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg /9/7 7 () () 3 () 83 6 () 78 9 /6/7 3 () () () 3 7 () //7 3 () 33 3 () 8 () 3 9 () 3 6/9/7 6 () () () 9 7 () 3 3 6/6/7 () 3 () () () 7 6 6/3/7 39 () 3 () () 9 8 () /3/7 33 () 3 3 () 7 () 3 3 () 9 8 7/7/7 () 8 8 () 6 9 () 3 () 7//7 37 (-) 3 () 6 () 9 6 (3) 6 6 7//7 () 8 (3) 7 67 (3) 7 66 () Values in parenthesis are the change from the previous report. Red numbers correspond to file locations on last page. South Region and Sub-Regions Week South Region DD Totals 8 South Atlantic DD Totals 9 East South Central Totals 9 West South Central Totals 9 Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg /9/7 () 6 () 7 () 38 8 () /6/7 () 6 7 () 9 3 () 3 7 () 8 6 6//7 8 () () () () 9 6 6/9/7 3 () () 66 3 () 7 68 () /6/7 7 () () () () /3/7 79 () () () () 9 6/3/7 69 () () 76 7 () () /7/7 86 () () () () //7 86 () () () () //7 87 (3) (3) (3) (3) 6 93 Values in parenthesis are the change from the previous report. Red numbers correspond to file locations on last page. West Region and Sub-Regions Week West Region DD Totals 8 Mountain DD Totals 9 Pacific DD Totals 9 Ending This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg This Yr Last Yr Yr Avg /9/7 () 7 () 7 68 () 7 33 /6/7 6 () () () 6 9 6//7 36 () () 6 6 () 8 3 6/9/7 3 () 6 7 () () /6/7 3 () 66 () () 8 3 6/3/7 66 () 9 () 9 83 () 3 6/3/7 9 () () () 7 7/7/7 6 () 9 () 8 9 () 3 7//7 7 (-) 7 7 (-) () 3 7//7 68 () 9 6 () () Values in parenthesis are the change from the previous report. 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

7 National Degree Day and NG Storage Projections Updated 7/6/7 AM Weekly U.S. Population Weighted Degree Days and Gas Storage Summary Week Weekly Degree Day Totals Gas Storage Levels (BCF) Gas Storage Build/Draw Ending This Year Last Year yr Avg This Year Last Year yr Avg TY-YR This Year Last Year yr Avg 3//7 () /3/7 79 () /7/7 77 () //7 8 () //7 9 () /8/7 8 () //7 6 () //7 8 () /9/7 () /6/7 3 () //7 () /9/7 3 () /6/7 6 () /3/7 6 () /3/7 () /7/7 67 () //7 7//7 68 () 69 (3) Values in parenthesis are the change from the previous report. Week Ending 7/7/7 7//7 7//7 Weekly Degree Day Totals Storage Number Forecast Based On: Model Min ModelAvg Forecast Model Max Model Min ModelAvg Forecast Model Max Model Min, Avg, Max refer to forecast weekly degree day totals from weather forecast models Storage model average absolute error over the previous two years of data is: 9.3 BCF Weekly Degree Day Totals vs. Weekly Storage Numbers (Last Years) R² =.979 Weekly NG Storage Number Weekly Combined Degree Day Total Red dots indicate values for last week, yellow dots are this week,and next two weeks. 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

8 EIA Region Degree Day and Storage Projections Updated 7/6/7 AM Week Ending /8/7 //7 //7 /9/7 /6/7 6//7 6/9/7 6/6/7 6/3/7 6/3/7 7/7/7 7//7 7//7 Old EIA Region Weekly Degree Day Totals East Consuming Region West Consuming Region Producing Region This Year Last Year yr Avg This Year Last Year yr Avg This Year Last Year yr Avg Values highlighted in yellow are projected NG storage values based on forecast degree day totals EIA East Region Population Weighted Degree Days and Gas Storage Summary Week Weekly Degree Day Totals 3 Gas Storage Levels (BCF) Gas Storage Build/Draw Ending This Year Last Year yr Avg This Year Last Year yr Avg TY-YR This Year Last Year yr Avg /8/ // // /9/ /6/ // /9/ /6/ /3/ /3/ /7/ // // Values highlighted in yellow are projected NG storage values based on forecast degree day totals EIA Midwest Region Population Weighted Degree Days and Gas Storage Summary Week Weekly Degree Day Totals 3 Gas Storage Levels (BCF) Gas Storage Build/Draw Ending This Year Last Year yr Avg This Year Last Year yr Avg TY-YR This Year Last Year yr Avg /8/ // // /9/ /6/ // /9/ /6/ /3/ /3/ /7/ // // Values highlighted in yellow are projected NG storage values based on forecast degree day totals 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

9 Updated 7/6/7 AM EIA Mountain Region Population Weighted Degree Days and Gas Storage Summary Week Weekly Degree Day Totals 3 Gas Storage Levels (BCF) Gas Storage Build/Draw Ending This Year Last Year yr Avg This Year Last Year yr Avg TY-YR This Year Last Year yr Avg /8/ // // /9/ /6/ // /9/ /6/ /3/ /3/ /7/ // // Values highlighted in yellow are projected NG storage values based on forecast degree day totals EIA Pacific Region Population Weighted Degree Days and Gas Storage Summary Week Weekly Degree Day Totals 3 Gas Storage Levels (BCF) Gas Storage Build/Draw Ending This Year Last Year yr Avg This Year Last Year yr Avg TY-YR This Year Last Year yr Avg /8/ // // /9/ /6/ // /9/ /6/ /3/ /3/ /7/ // // Values highlighted in yellow are projected NG storage values based on forecast degree day totals EIA South Central Region Population Weighted Degree Days and Gas Storage Summary Week Weekly Degree Day Totals 3 Gas Storage Levels (BCF) Gas Storage Build/Draw Ending This Year Last Year yr Avg This Year Last Year yr Avg TY-YR This Year Last Year yr Avg /8/ // // /9/ /6/ // /9/ /6/ /3/ /3/ /7/ // // Values highlighted in yellow are projected NG storage values based on forecast degree day totals Weekly Degree Day Comparison Tables 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

10 Weekly Degree Day Comparison Tables Updated 7/6/7 AM Weekly Degree Day and DOE Storage Number Comparison Tables Week Ending 6/3/7 Comparisons Week Ending 7/7/7 Comparisons Week Pop Wtd Storage Holiday Week Pop Wtd Storage Holiday Ending Tot DDs Number Week? Ending Tot DDs Number Week? 6/3/7 7* No 7/7/7 67 * No // 7 No /9/ No // 8 Yes /7/7 69 No /3/ 6 No 3/8/6 6 No // 3 83 No 3/3/7 7 No /3/ 6 No // 7 63 Yes // 87 No // No /3/ 9 9 No /8/ 7 9 No //7 9 No // 73 3 No /6/6 9 6 No // No /8/6 6 No //6 7 No // 7 7 No // 7 7 No Average 7 w/ Holiday Average 69 3 w/ Holiday Average 69 wo/ Holiday Average 68 8 wo/ Holiday Avg Best 69 Avg Best 68 7 Week Ending 7//7 Comparisons Week Ending 7//7 Comparisons Week Pop Wtd Storage Holiday Week Pop Wtd Storage Holiday Ending Tot DDs Number Week? Ending Tot DDs Number Week? 7//7 68 * No 7// * No /7/7 69 No /7/7 69 No /9/ No 3/3/7 7 No 3/3/7 7 No // 7 63 Yes // 7 63 Yes /8/ 7 9 No /8/ 7 9 No /9/ No 3/8/6 6 No // 73 3 No // 73 3 No 3/8/6 6 No // No // No // No //6 7 No //6 7 No // No /6/3 77 No /6/3 77 No Average 7 8 w/ Holiday Average 7 8 w/ Holiday Average 7 wo/ Holiday Average 7 wo/ Holiday Avg Best 69 Avg Best 69 *Denotes projected values from page 3 table The above charts compare the weekly total gas weighted degree days for last week, this week, and next week to the weeks during the past years that had the most similar gas weighted degree day totals. If a federal holiday occurred during a given week, it is marked as "Yes", otherwise as "No". Two averages of the gas weighted degree days and EIA storage numbers are presented. One that averages all of the closest matches, and one that only averages weeks that did not have a holiday. NOTE: these EIA average values should not be used as a direct forecast, but just as a weather-based estimate. The average EIA values are just averages of similar weeks, and no attempt is made to adjust for supply/demand differences, or other factors. 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

11 Daily Degree Day Summary Table Updated 7/6/7 AM Observed Data Last 3 Days Day Forecast Data Historical and Forecast Daily US Degree Day Totals with Comparison to Previous Years GW=Residential and Commercial Gas Weighted, PW=Population Weighted, CMB DD=a combined weighted GW HDD +.7*PW CDD total TY LY 3 3 TY LY 3 3 TY LY 3 3 TY LY Year Year Year 7 6 Year Year Year 7 6 Year Year Year 7 6 Year Year Year Fcst Obs Avg Avg Anom Fcst Obs Avg Avg Anom Fcst Obs Avg Avg Anom Fcst Obs Avg Avg Anom GW GW GW GW GW PW PW PW PW PW PW PW PW PW PW CMB CMB CMB CMB CMB Date HDD HDD HDD HDD HDD HDD HDD HDD HDD HDD CDD CDD CDD CDD CDD DD DD DD DD DD 6/6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ /3/ // // /3/ // // /6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ // Green colors denote above average degree day totals Red colors denote below average degree day totals 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

12 Daily Degree Day Summary Table Updated 7/6/7 AM Observed Data Forecast Data GW HDD = Residential and Commercial gas weighted HDDs. PW = Population weighted degree days EIA East DDs 3 EIA Midwest DDs 3 EIA Mountain DDs 3 EIA Pacific DDs 3 EIA South Central 3 GW PW PW GW Daily Regional U.S. Degree Day Totals (New EIA Regions) PW PW GW PW PW GW Date HDD HDD CDD CMB HDD HDD CDD CMB HDD HDD CDD CMB HDD HDD CDD CMB 6/6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ /3/ // // /3/ // // /6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ // CMB is the gas weighted HDDs plus.7 times the population weighted CDDs. Red numbers correspond to file locations on last page. PW PW GW PW PW HDD HDD CDD CMB WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

13 Daily Degree Day Summary Table Updated 7/6/7 AM Observed Data Forecast Data Daily Regional (Old EIA Regions) and U.S. Degree Day Totals GW HDD = Residential and Commercial gas weighted HDDs. PW = Population weighted degree days EIA East DDs EIA West DDs EIA Producing Total U.S. DDs GW PW PW GW PW PW GW PW PW GW PW PW Date HDD HDD CDD CMB HDD HDD CDD CMB HDD HDD CDD CMB HDD HDD CDD CMB 6/6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ /3/ // // /3/ // // /6/ /7/ /8/ /9/ // // // /3/ // // /6/ /7/ /8/ /9/ // CMB is the gas weighted HDDs plus.7 times the population weighted CDDs. Red numbers correspond to file locations on last page. Heat Pro 6 Oil 6 pane HDDs HDDs WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

14 Long Range Gas Weighted HDD Projections Updated 7/6/7 AM Cumulative HDD Anomaly. Cumulative HDD Anomaly Sep -Nov Seasonal HDD Projections Using Season-to-Date + Day Forecast + Last 3 Years of Observed Data -Sep September - May US R&C Gas Weighted HDD Anomaly Plume Relative to 3 Year Average 6% of years colder than Normal, % of years warmer than Normal when projecting end of season total using using observations to date plus weather from past years 8-Nov Current + Day Fcst + Moderate-Strong El Nino Current + Day Fcst + Weak-Moderate El Nino Current + Day Fcst + Weak-Moderate La Nina Current + Day Fcst + Moderate-Strong La Nina Current + Day Fcst + Last Year Current + Day Fcst + Year Average Current + Day Fcst + Forecast 9-Sep 3-Oct 7-Oct Sep-May Nov-Mar Dec-Feb Current + Coldest Year Current + Forecast Current + Year Avg Current + Last Year Current + Warmest Year Nov -Nov 8-Dec -Dec -Jan November - March US R&C Gas Weighted HDD Anomaly Plume (vs 3 Year Average) 8% of years colder than Normal, % of years warmer than Normal when projecting end of season total using using observations to date plus weather from past years Current + Day Fcst + Moderate-Strong El Nino Current + Day Fcst + Weak-Moderate El Nino Current + Day Fcst + Moderate-Strong La Nina Current + Day Fcst + Weak-Moderate La Nina Current + Day Fcst + Last Year Current + Day Fcst + Year Average Current + Day Fcst + Forecast -Nov -Nov 9-Nov 6-Dec 3-Dec -Dec 7-Dec 3-Jan -Jan 9-Jan 7-Jan Seasonal Gas Weighted HDD Anomaly Plume Summary -Feb -Jan 3-Jan 6-Feb 7-Feb -Mar -Feb 6-Mar -Feb 3-Mar 8-Feb 3-Apr May 3 Anomaly Fcst Mar 3 Anomaly Fcst Sep-May Nov-Mar Dec-Feb Current + Mod-Strg El Nino Avg Current + Weak-Mod El Nino Avg 9 6 Current + Mod-Strg La Nina Avg - - Current + Weak-Mod La Nina Avg Current + Average All Years Mar 7-Apr -Mar -May -Mar -May 8-Mar 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

15 Long Range Population Weighted CDD Projections Updated 7/6/7 AM Cumulative CDD Anomaly Mar Seasonal CDD Projection Plumes Using Season-to-Date Plus Last 3 Years of Observed Data -Mar March-November 7 US Population Weighted CDD Anomaly Plume Relative to 3 Year Avg Current + Day Fcst + Moderate-Strong El Nino Current + Day Fcst + Weak-Moderate El Nino Current + Day Fcst + Moderate-Strong La Nina Current + Day Fcst + Weak-Moderate La Nina Current + Day Fcst + Last Year Current + Day Fcst + Year Average Current + Day Fcst + Forecast 9-Mar -Apr 6-Apr -May -May 7-Jun -Jun -Jul 9-Jul -Aug 6-Aug 3-Aug 3-Sep 7-Sep -Oct -Oct Nov 3 Anomaly Fcst Cumulative CDD Anomaly May 8-May May - Sept 7 US Population Weighted CDD Anomaly Plume (vs 3 Year Avg) Current + Day Fcst + Moderate-Strong El Nino Current + Day Fcst + Weak-Moderate El Nino Current + Day Fcst + Moderate-Strong La Nina Current + Day Fcst + Weak-Moderate La Nina Current + Day Fcst + Last Year Current + Day Fcst + Year Average Current + Day Fcst + Forecast 6% of years warmer than Normal, 39% of years cooler than Normal when projecting end of season total using using observations to date plus weather from past years -May -May 9-May -Jun -Jun 9-Jun 6-Jun 3-Jul -Jul 7-Jul -Jul Sep 3 Anomaly Fcst Seasonal Population Weighted CDD Anomaly Plume Summary Jan-Dec May-Sep Jun-Aug Jan-Dec May-Sep Jun-Aug Current + Hottest Year Current + Mod-Strg El Nino Avg - -7 Current + Forecast 86 Current + Weak-Mod El Nino Avg - 8 Current + Year Avg Current + Mod-Strg La Nina Avg 79 7 Current + Last Year Current + Weak-Mod La Nina Avg 6 66 Current + Coolest Year Current + Average All Years Jul 7-Aug -Aug -Aug 8-Aug -Sep -Sep 8-Sep -Sep 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

16 Long Range NG Storage Projections Updated 7/6/7 AM Below are long-range NG storage projections based on the latest Frontier Weather day and seasonal forecast. The projections are based on a regression of weekly degree day totals to weekly storage numbers. No price/storage level production response is built in, so future projections are based on unchanging supply and non-weather related demand trends. Circled areas on graphs denote observed or forecast values at those points in time. Observed (red line) and 8 Month Forecast (blue line) Working Gas in Underground Storage Compared with -Year Range (grey band) and Year Minus -Year Storage Anomaly (Values = Frontier Forecast) Orange line uses Year Avg Storage Builds/Draws as Forecast Storage in Billion Cubic Feet Storage Surplus 3 87 This Year - -Year Avg in BCF Storage Deficit -63-7//6 7/9/6 8/6/6 9/3/6 //6 /8/6 /6/6 /3/7 //7 3//7 /7/7 //7 6//7 6/3/7 7/8/7 8//7 9//7 //7 /7/7 //7 //8 /9/ This Year Minus Last Year Storage Anomaly Storage Surplus //6 7/9/6 8/6/6 9/3/6 //6 /8/6 /6/6 /3/7 //7 3//7 Storage Deficit /7/7 //7 6//7 6/3/7 7/8/7 8//7 9//7 //7 /7/7 //7 //8 /9/ WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

17 Power Region Temperature & Degree Day Summary Updated 7/6/7 AM Power Region Temperature and Degree Day Summary AEP Dayton Hub Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Cinergy Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// COB Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Entergy Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Ercot Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Four Corners Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// FRCC Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Mead Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Mid Columbia Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// MRO/MAPP Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// * WA refers to the forecast value from one week ago. YA Anom is the DD departure from the year average. 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

18 Power Region Temperature & Degree Day Summary Updated 7/6/7 AM Power Region Temperature and Degree Day Summary NEPOOL Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Northern Illinois Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// NP Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// NYISO Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Palo Verde Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// PJM West Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// Southern Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// SP Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// TVA Avg Avg Avg Total YA Prev Fcst Yr Yr 3Yr Total YA Prev Fcst Yr Yr 3Yr Fri 6/3/ Fri 7/7/ Fri 7// * WA refers to the forecast value from one week ago. YA Anom is the DD departure from the year average. 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

19 Power Region Degree Day Graphs Updated 7/6/7 AM Power Region Temperature and Degree Day Summary SP MID COLUMBIA PJM ENTERGY ERCOT Daily Average HDDs 6/6 6/ 6/6 7/ 7/6 7/ 7/6 Daily Average HDDs 6/6 6/ 6/6 7/ 7/6 7/ 7/6 3 Daily Average HDDs 6/6 6/ 6/6 7/ 7/6 7/ 7/6 Daily Average HDDs 8 6 6/6 6/ 6/6 7/ 7/6 7/ 7/ Daily Average HDDs 6/6 6/ 6/6 7/ 7/6 7/ 7/ Weekly Average HDDs / /8 / /6 6/9 6/3 7/7 3 Weekly Average HDDs / /8 / /6 6/9 6/3 7/7 Weekly Average HDDs / /8 / /6 6/9 6/3 7/7 - Weekly Average HDDs / /8 / /6 6/9 6/3 7/7 8 6 Weekly Average HDDs / /8 / /6 6/9 6/3 7/7 \ Daily Average CDDs 3 \ 6/6 6/ 6/6 7/ 7/6 7/ 7/6 Daily Average CDDs 3 6/6 6/ 6/6 7/ 7/6 7/ 7/6 Daily Average CDDs 6/6 6/ 6/6 7/ 7/6 7/ 7/6 Daily Average CDDs 6/6 6/ 6/6 7/ 7/6 7/ 7/6 Daily Average CDDs 6/6 6/ 6/6 7/ 7/6 7/ 7/6 Weekly Average CDDs / /8 / /6 6/9 6/3 7/7 Weekly Average CDDs / /8 / /6 6/9 6/3 7/7 Weekly Average CDDs / /8 / /6 6/9 6/3 7/7 Weekly Average CDDs / /8 / /6 6/9 6/3 7/7 8 6 Weekly Average CDDs / /8 / /6 6/9 6/3 7/7 7 WDT, Inc. All rights reserved. Reproduction, distribution or disclosure is prohibited.

U.S. Heating and Cooling Degree Day Summary Updated 7/6/7 AM Source file locations for data in various degree day tables in report 3 6 7 8 9 3 http://www.frontierweather.

csv Combination of number for CDDs and number 3 for HDDs. http://www.frontierweather.com/degreedays/usgasweightedbyyeardds.txt http://www.frontierweather.com/degreedays/hr_fw_996_forecast_fueloil_propane_hdds.

20 U.S. Heating and Cooling Degree Day Summary Updated 7/6/7 AM Source file locations for data in various degree day tables in report Combination of number for CDDs and number 3 for HDDs and OWlastandforecast.txt Above data files are password protected and only available to direct Frontier Weather subscribers. The HR in the file name designates that it is derived from our new higher resolution population weighted data set. The FW in the file named disignates that population/gas weights for all years of data are fixed to values. A set of files with the same name, but without the "_FW" in the file name is also available, and in those files the weights vary by year. The fixed weights are used in this report to allow for better comparison to values from previous years since differences in values are only due to differences in weather and not differences in population patterns as well. The main difference between the new data files used in this report and the old data files used in the previous version of the report is that the U.S. and regional degree day totals are derived from 3 cities in the new data files versus cities in the old files. This difference is more apparent on the regional level than the national level. Map of PADD Regions 7 WDT, Inc. All rights reserved. Any unauthorized reproduction, distribution or disclosure is prohibited and may result in account termination and/or prosecution. Information contained in this report is intended solely for use by the recipient and may not be further distributed without written approval from WDT, Inc. Users of this report agree to the following: THE REPORT is provided by WDT, INC AS IS, and AS AVAILABLE WITHOUT WARRANTY OF ANY KIND TO USER OR ANY THIRD PARTY, INCLUDING, BUT NOT LIMITED TO, ANY EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OF THE REPORT; ACCURACY OF INFORMATIONAL CONTENT; NON-INFRINGEMENT; QUIET ENJOYMENT; AND TITLE. FRONTIER WEATHER, INC. SHALL NOT BE LIABLE FOR ANY LOSS, INJURY, CLAIM, LIABILITY OR DAMAGE OF ANY KIND RESULTING IN ANY WAY FROM THE USE OF THIS INFORMATION. THE USER FURTHER AGREES THAT FRONTIER WEATHER, INC. SHALL NOT BE LIABLE TO USER OR ANY THIRD PARTY FOR ANY LOSS OF PROFITS, LOSS OF USE, INTERRUPTION OF BUSINESS, OR ANY DIRECT, INDIRECT, SPECIAL, EXEMPLARY, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND WHETHER UNDER THIS AGREEMENT OR OTHERWISE, EVEN IF FRONTIER WEATHER, INC. WAS ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR WAS GROSSLY NEGLIGENT. In any event, WDT, INC. shall never be liable for any amount in excess of the fees paid by the USER to WDT, INC. hereby. Additionally, WDT, INC. makes no warranty that the information provided in this report will be free from errors or omissions, or defects, human or mechanical.

All King County Summary Report

All King County Summary Report September, 2016 MTD MARKET UPDATE Data Current Through: September, 2016 18,000 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 Active, Pending, & Months Supply of Inventory 15,438 14,537 6.6 6.7