WGL Holdings, Inc. Reports First Quarter Fiscal Year 2007 Earnings and Updates Earnings Guidance

WASHINGTON, Jan. 31 /PRNewswire-FirstCall/ -- WGL Holdings, Inc. , the parent company of Washington Gas Light Company (Washington Gas) and other energy-related subsidiaries, today reported net income of $45.1 million, or $0.92 per share, for the three months ended December 31, 2006, the first quarter of our fiscal year 2007. This compares to net income of $44.4 million, or $0.91 per share, reported for the three months ended December 31, 2005. Unless otherwise noted, earnings per share amounts are presented in this news release on a diluted basis, and are based on weighted average common and common equivalent shares outstanding.

We reported consolidated income from continuing operations of $45.1 million, or $0.92 per share, for the three months ended December 31, 2006, as compared to income from continuing operations of $45.3 million, or $0.93 per share, reported for the three months ended December 31, 2005. Income from continuing operations for the three months ended December 31, 2005 excludes an after-tax loss of $866,000, or $0.02 per share, from the discontinued operations of American Combustion Industries, Inc. (ACI), an indirect, wholly owned subsidiary of WGL Holdings, which was sold on September 29, 2006. ACI was reported as a discontinued operation of WGL Holdings commencing in the third quarter of fiscal year 2006; accordingly, its financial position and operating results as of and for the three months ended December 31, 2005 have been presented separately from our continuing operations in the consolidated financial statements of WGL Holdings.

"Continuing customer growth, our consistent focus on operational excellence and an effective weather protection strategy contributed to solid first quarter results for our regulated utility segment," said James H. DeGraffenreidt, Jr., WGL Holdings' Chairman and CEO. "We achieved these results despite lower natural gas usage and weather that was 13 percent warmer than last year's first quarter. Although warmer weather and reduced demand hurt unregulated natural gas margins, targeted expansion into regional electricity markets drove a 90 percent increase in the number of electricity customers served and contributed to a six-fold increase in the earnings of our retail energy-marketing segment compared to last year's first quarter. Our solid first quarter results confirm the success of our strategic initiatives."

Results from Normal Operations

We evaluate our financial performance based on results from normal operations, which reflect normal weather for our regulated utility segment, and are not influenced by unique transactions and discontinued operations. Excluding the effects of weather, unique transactions and discontinued operations, our consolidated earnings from normal operations for the first quarter of fiscal year 2007 were $0.87 per share, a $0.01 per share improvement over earnings from normal operations of $0.86 per share for the same quarter of the prior fiscal year. This improvement reflects $0.03 per share of increased earnings from our unregulated business segments that were driven principally by our retail energy-marketing business, mostly offset by $0.02 per share of lower earnings from normal operations by our regulated utility segment.

Earnings from normal operations exclude the effect of variations from normal weather on our regulated utility segment. For both quarters ended December 31, 2006 and 2005, Washington Gas implemented a weather protection strategy designed to provide full protection from the negative financial effects of warmer-than-normal weather while preserving the potential benefit from colder-than-normal weather. For the first quarter of fiscal year 2007, the application of our weather protection products neutralized the earnings effect of 4.1 percent warmer-than-normal weather experienced during this period. For the first quarter of fiscal year 2006, weather was 10.1 percent colder than normal and contributed an estimated $4 million (after-tax), or $0.07 per share, to net income for that period. The effects on net income of weather and our related weather protection products are discussed later in this news release.

Earnings from normal operations for the first quarter of fiscal year 2007 exclude the effect of a unique transaction related to our regulated utility segment. Specifically excluded was a $3.9 million (pre-tax), or $0.05 per share, adjustment that reduced depreciation expense applicable to the period from January 1, 2006 through September 30, 2006. This adjustment was recorded in the first quarter of fiscal year 2007 upon approval by the staff of the Virginia State Corporation Commission (SCC of VA). There were no unique transactions in the first quarter of the prior fiscal year.

Reconciliations of WGL Holdings' and the regulated utility segment's earnings per share reported in accordance with Generally Accepted Accounting Principles in the United States of America (GAAP) to earnings per share from normal operations are included with this news release.

GAAP Results from Operations - Three Months Ended December 31, 2006

The remainder of the discussion in this news release focuses on operating results derived by each of our primary business segments in accordance with GAAP. An analysis of net income (loss) applicable to common stock by segment is included with this news release.

Regulated Utility Segment

Our regulated utility segment reported net income of $43.0 million, or $0.88 per share, for the first three months of fiscal year 2007, as compared to net income of $44.8 million, or $0.92 per share, reported for the same quarter of the prior fiscal year. The year-over-year decrease in net income primarily was attributable to lower net revenues (revenues less cost of gas and revenue taxes), mostly offset by decreased operation and maintenance expenses, depreciation and amortization expense and general taxes.

Lower net revenues primarily reflect a decrease in total natural gas deliveries to firm customers that fell by 65.0 million therms, or 15.1 percent, to 364.6 million therms during the first quarter of fiscal year 2007. The decline in therm deliveries was driven by warmer weather and other factors that lowered customer usage. The earnings effect of the 4.1 percent warmer- than-normal weather experienced in the first quarter of fiscal year 2007 was neutralized by the application of our Revenue Normalization Adjustment billing mechanism in Maryland, and the benefits from our weather insurance policy and weather derivative in the District of Columbia and Virginia, respectively. The net benefits derived from our weather protection strategies in the District of Columbia and Virginia for the first quarter of fiscal years 2007 and 2006 are reflected in "Operation and maintenance" expense, as discussed below. In the first quarter of fiscal year 2006, net income was enhanced by an estimated $4 million (after-tax), or $0.07 per share, from the 10.1 percent colder-than-normal weather experienced in that period.

The decline in natural gas deliveries was also attributable to other factors affecting customer usage, such as unusual weather patterns and customer conservation, which lowered earnings derived in the District of Columbia and Virginia for the first quarter of fiscal year 2007 when compared to the same quarter last fiscal year. Customer usage may not correlate highly with actual heating degree days during months that begin our winter heating season when weather patterns are not consistently cold or warm. Net revenues for the first quarter of fiscal year 2007 were favorably affected by the addition of over 16,100 active customer meters since the end of the same quarter of the prior fiscal year, partially offset by decreased earnings from recoverable carrying costs on lower average storage gas inventories.

Earnings of the regulated utility segment for the first three months of fiscal year 2007 were favorably affected by a $4.6 million (pre-tax), or $0.06 per share, reduction in operation and maintenance expenses. Principally contributing to the reduction in these expenses were lower expenses for uncollectible accounts. Additionally, the regulated utility segment benefited $1.3 million (pre-tax), or $0.02 per share, in the first quarter of fiscal year 2007 in relation to the prior fiscal year from our weather protection products in the District of Columbia and Virginia, net of related expenses of these products. Partially offsetting the reduced expenses were higher pension and post-retirement benefit costs and increased un-recovered purchased hexane costs.

The regulated utility segment also benefited from $4.4 million (pre-tax), or $0.05 per share, of lower depreciation and amortization expense in the current first quarter when compared to the same quarter of the prior fiscal year. The lower expense was attributable to an adjustment recorded in the first quarter of fiscal year 2007 to reflect a reduction in Washington Gas' depreciation rates on fixed assets related to the Virginia jurisdiction. The reduction in Washington Gas' depreciation rates was approved by the staff of the SCC of VA during the first quarter of fiscal year 2007. In accordance with Virginia regulatory policy, we implemented the new depreciation rates retroactive to January 1, 2006 which coincides with the date of the approved depreciation study. Accordingly, our depreciation and amortization expense for the first quarter ended December 31, 2006 included a benefit totaling $5.2 million (pre-tax), or $0.07 per share, of which $3.9 million (pre-tax), or $0.05 per share, was applicable to the period from January 1, 2006 through September 30, 2006. Partially offsetting the effect of reduced depreciation rates was the effect of increased investment in property, plant and equipment.

Retail Energy-Marketing Segment

The retail energy-marketing segment reported net income of $2.7 million, or $0.05 per share, for the three months ended December 31, 2006, an increase of $2.3 million, or $0.04 per share, over net income of $423,000, or $0.01 per share, reported for the same three-month period of the prior fiscal year. The year-over-year improvement in earnings for this business primarily reflects higher gross margins (revenues less costs of energy) from the sale of electricity, partially offset by lower gross margins from the sale of natural gas. Further tempering the improved earnings were higher selling, general and administrative expenses due primarily to increased costs associated with marketing initiatives for increasing our electric customer base.

Gross margins from electric sales increased significantly during the 2007 first quarter, reflecting a dramatic rise in both the gross margin per kilowatt hour sold and electric sales volumes. By the end of the 2007 first quarter, electric customers had grown 90 percent when compared to the end of the same quarter of the prior fiscal year. This customer growth was principally the result of new competitive opportunities that emerged in the second half of fiscal year 2006 due to sharp increases in competing rates offered by electric utilities in Maryland and Delaware.

Lower gross margins from natural gas sales stemmed from a combination of lower natural gas sales volumes and higher gas costs in relation to retail sales prices. Natural gas sales volumes decreased 8.4 percent due to warmer weather experienced in the first quarter of fiscal year 2007 compared to the same quarter of the prior fiscal year. Additionally, as a result of warmer weather, demand for natural gas was lower than expected and resulted in a mix of higher-cost storage gas withdrawals and contracted natural gas purchases that were used to supply retail sales customers during the first quarter of fiscal year 2007 relative to the same quarter last year.

Favorably affecting gross margins from natural gas sales were lower mark- to-market losses and weather hedge costs in the current first quarter than in the same quarter of the prior fiscal year. Market valuation losses or gains are recorded principally in connection with derivative contracts that are used to mitigate the risk of volatility in the market price of natural gas. The year-over-year net change in the valuation of these instruments, including the weather hedge costs, increased income by $871,000 (pre-tax), or $0.01 per share.

Earnings Outlook

We are lowering our consolidated earnings estimate for the full fiscal year 2007 to a range of $1.74 to $1.84 per share from our previous guidance of $1.81 to $1.91 per share. This updated estimate includes a slight increase in projected full fiscal year 2007 earnings from our regulated utility segment to a range of $1.56 to $1.62 per share from the previous range of $1.55 per share to $1.61 per share, and a decrease in projected full fiscal year 2007 earnings from continuing operations related to our unregulated business segments to a range of $0.18 to $0.22 per share from the previous range of $0.26 to $0.30 per share. The annual guidance for the consolidated entity includes an estimate of earnings for our second quarter ending March 31, 2007 in the range of $1.12 to $1.18 per share. This estimate reflects projected earnings from our regulated utility segment in a range of $1.25 to $1.29 per share, and a projected net loss related to our unregulated business segments in a range of $0.13 to $0.11 per share.

This guidance reflects the estimated effect of actual weather through January 28, 2007, and assumes normal weather thereafter. The annual guidance also includes an estimated increase in revenues in Virginia in connection with a rate case pending before the SCC of VA. This increase in Virginia rates is subject to a final determination by the SCC of VA. The guidance assumes that the revenue effects of new rates in the District of Columbia will occur after fiscal year 2007. The guidance also assumes no effect of unusual items that could arise in the future, and no future gains or losses related to discontinued operations. This guidance includes the forecasted results of continuing operations only. We assume no obligation to update this guidance. The absence of any statement by us in the future should not be presumed to represent an affirmation of this earnings guidance.

Other Information

We will hold a conference call at 10:30 a.m. Eastern time on February 1, 2007, to discuss our first quarter financial results. The live conference call will be available to the public via a link located on the WGL Holdings Web site, http://www.wglholdings.com/. Slides providing details of our results of operations will be posted to the Web site. To hear the live webcast, click on the "Live Webcast" link located on the home page of the referenced site. The webcast and related slides will be archived on the WGL Holdings Web site through March 1, 2007.

Headquartered in Washington, D.C., WGL Holdings is the parent company of Washington Gas Light Company, a natural gas utility that serves over one million customers throughout metropolitan Washington, D.C., and the surrounding region. In addition, we hold energy-related retail businesses that focus primarily on retail energy-marketing and commercial heating, ventilating and air conditioning services.

Additional information about WGL Holdings is available on our Web site, http://www.wglholdings.com/.

Note: This news release and other statements by us include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 with respect to the outlook for earnings, revenues and other future financial business performance or strategies and expectations. Forward- looking statements are typically identified by words such as, but not limited to, "estimates," "expects," "anticipates," "intends," "believes," "plans," and similar expressions, or future or conditional verbs such as "will," "should," "would," and "could." Although we believe such forward-looking statements are based on reasonable assumptions, we cannot give assurance that every objective will be achieved. Forward-looking statements speak only as of today, and we assume no duty to update them.

As previously disclosed in our filings with the Securities and Exchange Commission (SEC), the following factors, among others, could cause actual results to differ materially from forward-looking statements or historical performance: the level and rate at which costs and expenses are incurred and the extent to which they are allowed to be recovered from customers through the regulatory process in connection with constructing, operating and maintaining Washington Gas' natural gas distribution system; the ability to implement successful approaches to modify the current or future composition of gas delivered to customers or to remediate the effects of the current or future composition of gas delivered to customers, as a result of the introduction of gas from the Dominion Cove Point facility to Washington Gas' natural gas distribution system; the ability to recover the costs of implementing steps to accommodate delivery of natural gas to customers as a result of the receipt of gas from the Cove Point facility; variations in weather conditions from normal levels; the availability of natural gas supply and interstate pipeline transportation and storage capacity; the ability of natural gas producers, pipeline gatherers, and natural gas processors to deliver natural gas into interstate pipelines for delivery by those interstate pipelines to the entrance points of Washington Gas' natural gas distribution system as a result of factors beyond our control; changes in economic, competitive, political and regulatory conditions and developments; changes in capital and energy commodity market conditions; changes in credit ratings of debt securities of WGL Holdings, Inc. or Washington Gas Light Company that may affect access to capital or the cost of debt; changes in credit market conditions and creditworthiness of customers and suppliers; changes in relevant laws and regulations, including tax, environmental and employment laws and regulations; legislative, regulatory and judicial mandates or decisions affecting business operations or the timing of recovery of costs and expenses; the timing and success of business and product development efforts and technological improvements; the pace of deregulation efforts and the availability of other competitive alternatives to our products and services; changes in accounting principles; acts of God and terrorist activities and other uncertainties. The outcome of negotiations and discussions we may hold with other parties from time to time regarding utility and energy-related investments and strategic transactions that are both recurring and non- recurring may also affect future performance. For a further discussion of the risks and uncertainties, see our most recent annual report on Form 10-K, and other reports filed with the SEC.

Please see the following comparative statements for additional information. Also included are reconciliations of WGL Holdings' and the regulated utility segment's earnings per share reported in accordance with GAAP to earnings per share from normal operations.

WGL Holdings, Inc. Consolidated Statements of Income Three Months Ended December 31, 2006 and 2005 (Unaudited) Three Months Ended December 31, (In thousands, except per share data) 2006 2005 OPERATING REVENUES Utility $431,021 $601,337 Non-utility 301,941 301,610 Total Operating Revenues 732,962 902,947 OPERATING EXPENSES Utility cost of gas 248,676 406,586 Non-utility cost of energy-related sales 289,843 293,516 Operation and maintenance 62,605 65,729 Depreciation and amortization 18,640 23,046 General taxes and other assessments 25,446 28,597 Total Operating Expenses 645,210 817,474 OPERATING INCOME 87,752 85,473 Other Income (Expenses)- Net (172) 300 Interest Expense Interest on long-term debt 10,008 10,222 Other - net 3,204 1,760 Total Interest Expense 13,212 11,982 Dividends on Washington Gas preferred stock 330 330 INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 74,038 73,461 INCOME TAXES 28,940 28,209 INCOME FROM CONTINUING OPERATIONS 45,098 45,252 Loss from discontinued operations, net of income tax benefit - (866) NET INCOME (APPLICABLE TO COMMON STOCK) $45,098 $44,386 AVERAGE COMMON SHARES OUTSTANDING Basic 48,985 48,741 Diluted 49,130 48,894 EARNINGS PER AVERAGE COMMON SHARE Basic Income from continuing operations $0.92 $0.93 Loss from discontinued operations - (0.02) Basic earnings per average common share $0.92 $0.91 Diluted Income from continuing operations $0.92 $0.93 Loss from discontinued operations - (0.02) Diluted earnings per average common share $0.92 $0.91 Net Income (Loss) Applicable To Common Stock - By Segment ($000): Regulated utility $42,995 $44,770 Non-utility operations: Retail energy-marketing 2,676 423 Commercial HVAC 97 435 Total major non-utility 2,773 858 Other, principally non-utility activities (670) (376) Total non-utility 2,103 482 INCOME FROM CONTINUING OPERATIONS 45,098 45,252 Loss from discontinued operations, net of income tax benefit - (866) NET INCOME (APPLICABLE TO COMMON STOCK) $45,098 $44,386 WGL Holdings, Inc. Consolidated Balance Sheets December 31, 2006 (Unaudited) December 31, September 30, (In thousands) 2006 2006 ASSETS Property, Plant and Equipment At original cost $2,980,595 $2,949,951 Accumulated depreciation and amortization (893,263) (882,056) Net property, plant and equipment 2,087,332 2,067,895 Current Assets Cash and cash equivalents 12,224 4,350 Accounts receivable, net 473,676 197,933 Storage gas - at cost (first-in, first-out) 252,909 296,061 Other 72,262 63,678 Total current assets 811,071 562,022 Deferred Charges and Other Assets 241,999 161,489 Total Assets $3,140,402 $2,791,406 CAPITALIZATION AND LIABILITIES Capitalization Common shareholders' equity $959,128 $921,807 Washington Gas Light Company preferred stock 28,173 28,173 Long-term debt 605,073 576,139 Total capitalization 1,592,374 1,526,119 Current Liabilities Notes payable and current maturities of long-term debt 277,689 238,370 Accounts payable and other accrued liabilities 313,075 208,501 Other 214,354 113,971 Total current liabilities 805,118 560,842 Deferred Credits 742,910 704,445 Total Capitalization and Liabilities $3,140,402 $2,791,406 WGL Holdings, Inc. Consolidated Financial and Operating Statistics For Periods Ended December 31, 2006 and 2005 (Unaudited) FINANCIAL STATISTICS Twelve Months Ended December 31, 2006 2005 Closing Market Price - end of period $32.58 $30.06 52-Week Market Price Range $33.55-$27.04 $34.79-$28.85 Price Earnings Ratio 18.0 14.0 Annualized Dividends Per Share $1.35 $1.33 Dividend Yield 4.1 % 4.4 % Return on Average Common Equity 9.4 % 11.6 % Total Interest Coverage (times) (1) 4.1 4.8 Book Value Per Share - end of period $19.52 $18.91 Common Shares Outstanding - end of period (thousands) 49,129 48,754 (1) Calculated using income from continuing operations. UTILITY GAS STATISTICS Three Months Ended Twelve Months Ended December 31, December 31, (In thousands) 2006 2005 2006 2005 Operating Revenues Gas Sold and Delivered Residential - Firm $281,486 $398,864 $932,277 $1,019,932 Commercial and Industrial - Firm 80,220 133,669 284,839 324,115 Commercial and Industrial - Interruptible 2,248 2,330 8,108 8,812 Electric Generation 275 408 1,099 1,233 364,229 535,271 1,226,323 1,354,092 Gas Delivered for Others Firm 44,065 41,906 138,147 139,323 Interruptible 13,290 10,952 44,624 38,049 Electric Generation 57 91 253 565 57,412 52,949 183,024 177,937 421,641 588,220 1,409,347 1,532,029 Other 9,380 13,117 42,847 39,747 Total $431,021 $601,337 $1,452,194 $1,571,776 Three Months Ended Twelve Months Ended December 31, December 31, (In thousands of therms) 2006 2005 2006 2005 Gas Sales and Deliveries Gas Sold and Delivered Residential - Firm 182,784 216,830 559,548 658,455 Commercial and Industrial - Firm 57,729 77,554 194,172 226,953 Commercial and Industrial - Interruptible 1,868 1,676 6,377 7,329 242,381 296,060 760,097 892,737 Gas Delivered for Others Firm 124,093 135,263 392,642 431,643 Interruptible 76,793 72,794 255,002 275,220 Electric Generation 10,111 15,920 102,506 80,487 210,997 223,977 750,150 787,350 Total 453,378 520,037 1,510,247 1,680,087 WASHINGTON GAS ENERGY SERVICES Natural Gas Sales Therm Sales (thousands of therms) 204,612 223,475 677,831 732,787 Number of Customers (end of period) 142,000 144,300 142,000 144,300 Electricity Sales Electricity Sales (thousands of kWhs) 899,729 492,371 2,819,765 2,396,012 Number of Accounts (end of period) 66,700 35,100 66,700 35,100 UTILITY GAS PURCHASED EXPENSE (excluding off system) 104.09 c 136.86 c 114.18 c 106.26 c HEATING DEGREE DAYS Actual 1,308 1,499 3,519 4,133 Normal 1,364 1,362 3,809 3,801 Percent Colder (Warmer) than Normal (4.1) % 10.1 % (7.6) % 8.7 % Number of Active Customer Meters (end of period) 1,045,572 1,029,430 1,045,572 1,029,430 WGL Holdings, Inc. (Regulated Utility Segment) Three Months Ended December 31, 2006 and 2005 (Unaudited) Statements of Income Three Months Ended December 31, (In thousands) 2006 2005 Operating Revenues $433,350 $604,985 Operating Expenses: Cost of gas 251,005 410,234 Operation 46,588 51,527 Maintenance 9,465 9,154 Depreciation and amortization 18,551 22,960 General taxes and other assessments: Revenue taxes 15,277 16,693 Other 9,275 10,039 Total operating expenses 350,161 520,607 Operating income 83,189 84,378 Other income (expenses) - net (131) (59) Interest expense 11,974 11,322 Dividends on Washington Gas preferred stock 330 330 Income taxes 27,759 27,897 Net income $42,995 $44,770 Utility Net Revenues ($000) (1) Operating revenues $433,350 $604,985 Less: Cost of gas 251,005 410,234 Revenue taxes 15,277 16,693 Utility net revenues $167,068 $178,058 (1) We analyze the operating results of our regulated utility segment based on utility net revenues. Washington Gas Light Company includes the cost of the natural gas commodity and revenue taxes (comprised principally of gross receipts taxes) in its rates charged to customers as reflected in operating revenues. Accordingly, changes in the cost of gas and revenue taxes associated with sales made to customers have no direct effect on the net revenues or net income of the regulated utility segment. WGL HOLDINGS, INC. (CONSOLIDATED) RECONCILIATION OF REPORTED GAAP EARNINGS PER SHARE AND ADJUSTED EARNINGS PER SHARE (Unaudited) January 31, 2007

The reconciliation below is provided to demonstrate our utilization of historical earnings per share, as derived in accordance with Generally Accepted Accounting Principles in the United States of America (GAAP), and adjusted earnings per share from normal operations, a non-GAAP measure. This reconciliation is provided to more clearly identify the results from normal operations for WGL Holdings, Inc. and its consolidated subsidiaries, and identify certain unique transactions that are not expected to repeat. This information should assist investors and analysts to track progress towards achieving our five-year financial objectives, which are based on normal weather and uninfluenced by: (i) single, one-time, non-repeating transactions and (ii) our discontinued operations.

Utilization of normal weather is an industry standard, and it is our practice to provide estimates and guidance on the basis of normal weather. Actual performance and results may vary from normal weather projections and we consistently identify and explain this variation to assist users in the analysis of actual results versus the guidance. There may be other uses for the data, and we do not imply that this is the only use or the best use of this data for purposes of this analysis.

WGL Holdings, Inc. (Consolidated) Reconciliation of Reported GAAP Earnings Per Share to Adjusted Earnings Per Share from Normal Operations Fiscal Year 2007 By Quarter (1) Fiscal Year 2007 Results Quarter Ended Year- To- Dec. 31 Mar. 31 Jun. 30 Sept. 30 Date GAAP diluted earnings per share $0.92 $0.92 Less: (Loss) from discontinued operations - net - - GAAP diluted earnings per share from continuing operations 0.92 0.92 Adjustments for: Retroactive depreciation expense adjustment (0.05) (0.05) Adjusted diluted earnings per share from normal operations $0.87 $0.87 WGL Holdings, Inc. (Consolidated) Reconciliation of Reported GAAP Earnings Per Share to Adjusted Earnings Per Share from Normal Operations Fiscal Year 2006 By Quarter (1)(2) Fiscal Year 2006 Results Quarter Ended Year- To- Dec. 31 Mar. 31 Jun. 30 Sept. 30 Date GAAP diluted earnings per share $0.91 $0.91 Less: (Loss) from discontinued operations - net (0.02) (0.02) GAAP diluted earnings per share from continuing operations 0.93 0.93 Adjustments for: Colder-than-normal weather (0.07) (0.07) Adjusted diluted earnings per share from normal operations $0.86 $0.86 (1) Quarterly earnings per share may not sum to year-to-date or annual earnings per share as quarterly calculations are based on weighted average common and common equivalent shares outstanding which may vary for each of those periods. (2) On September 29, 2006, we sold all of the outstanding shares of common stock of a portion of our commercial heating, ventilation and air conditioning business segment. The operating results of the discontinued operation have been presented separately from the operating results of our continuing operations for the fiscal year 2006 period presented. WGL HOLDINGS, INC. (REGULATED UTILITY SEGMENT) RECONCILIATION OF REPORTED GAAP EARNINGS PER SHARE AND ADJUSTED EARNINGS PER SHARE (Unaudited) January 31, 2007

The reconciliation below is provided to demonstrate our utilization of historical earnings per share, as derived in accordance with Generally Accepted Accounting Principles in the United States of America (GAAP), and adjusted earnings per share from normal operations, a non-GAAP measure. This reconciliation is provided to more clearly identify the results from normal operations for the regulated utility segment, and identify certain unique transactions that are not expected to repeat. This information should assist investors and analysts to track progress towards achieving our five-year financial objectives, which are based on normal weather and uninfluenced by single, one-time, non-repeating transactions.

Utilization of normal weather is an industry standard, and it is our practice to provide estimates and guidance on the basis of normal weather. Actual performance and results may vary from normal weather projections, and we consistently identify and explain this variation to assist users in the analysis of actual results versus the guidance. There may be other uses for the data, and we do not imply that this is the only use or the best use of this data for purposes of this analysis.

WGL Holdings, Inc. (Regulated Utility Segment) Reconciliation of Reported GAAP Earnings Per Share to Adjusted Earnings Per Share from Normal Operations Fiscal Year 2007 By Quarter (1) Fiscal Year 2007 Results Quarter Ended Year- To- Dec. 31 Mar. 31 Jun. 30 Sept. 30 Date GAAP diluted earnings per share $0.88 $0.88 Adjustments for: Retroactive depreciation expense adjustment (0.05) (0.05) Adjusted diluted earnings per share from normal operations $0.83 $0.83 WGL Holdings, Inc. (Regulated Utility Segment) Reconciliation of Reported GAAP Earnings Per Share to Adjusted Earnings Per Share from Normal Operations Fiscal Year 2006 By Quarter (1) Fiscal Year 2006 Results Quarter Ended Year- To- Dec. 31 Mar. 31 Jun. 30 Sept. 30 Date GAAP diluted earnings per share $0.92 $0.92 Adjustments for: Colder-than-normal weather (0.07) (0.07) Adjusted diluted earnings per share from normal operations $0.85 $0.85 (1) Quarterly earnings per share may not sum to year-to-date or annual earnings per share as quarterly calculations are based on weighted average common and common equivalent shares outstanding which may vary for each of those periods.