TULSA, Okla., May 5 /PRNewswire-FirstCall/ -- Williams Partners L.P. (NYSE: WPZ) today announced unaudited first-quarter 2010 net income of $313 million, compared with first-quarter 2009 net income of $183 million. Net income per common limited-partner unit for first-quarter 2010 was $0.61, compared with $0.36 per unit for first-quarter 2009.



    Quarterly Summary Financial Information               1Q
                                                          ---
    Amounts in millions, except per-unit
     amounts.                                      2010          2009
                                                   ----          ----
    (Unaudited)

    Net income                                     $313          $183
                                                   ====          ====
    Net income per common L.P. unit               $0.61         $0.36
                                                  =====         =====



    Distributable cash flow (DCF) (1)              $416          $299
    Less: Pre-partnership DCF (2)                  (143)         (269)
                                                   ----          ----
    DCF attributable to partnership
     operations                                    $273           $30
                                                   ====           ===

    Cash distribution coverage ratio (1)          1.76x         0.88x
                                                  =====         =====


    (1) Distributable Cash Flow and Cash Distribution Coverage Ratio are
    non-GAAP measures.  Reconciliations to the most relevant measures
    included in GAAP are attached to this news release.
    (2) For 2010, this amount represents DCF for the contributed assets
    for January 2010 as the partnership received cash flows from the
    contributed assets beginning Feb. 1, 2010.  For 2009, this amount
    represents all of the DCF for the contributed assets since this
    entire period was prior to the receipt of cash flows from the
    contributed assets.

Higher natural gas liquid (NGL) margins in the midstream business drove the substantial increase in net income for the first quarter. Results from the gas pipeline business were steady as expected. There is a more detailed discussion of the midstream and gas pipeline business results in the business segment performance section below.

The results throughout this release have been recast to reflect the partnership's asset contribution transactions with Williams (NYSE: WMB), which closed on Feb. 17, 2010. Please see the partnership's Feb. 17 and Jan. 19 news releases for details on the transactions.

In the recasting of the partnership's net income, all of the contributed assets' net income occurring prior to the closing date was allocated to Williams.

Asset Contributions Drive Substantial Increase in Distributable Cash Flow

For first-quarter 2010, Williams Partners' distributable cash flow attributable to partnership operations was $273 million, compared with $30 million for first-quarter 2009.

The substantial increase in distributable cash flow attributable to partnership operations is due to the growth of the partnership via the asset contribution transactions. Higher per-unit NGL margins and a higher cash distribution from the partnership's Discovery investment also contributed to the improved results for first-quarter 2010.

CEO Perspective

"This first quarter demonstrated the earnings and cash flow generation power of the new Williams Partners," said Steve Malcolm, chief executive officer of the general partner of Williams Partners.

"Our gas pipeline and fee-based midstream businesses provided a steady base of earnings and cash flow, while much higher NGL margins drove a significant improvement in the commodity-based midstream business," Malcolm said. "Our first-quarter performance resulted in a strong cash distribution coverage ratio of 1.76x."

"Looking ahead to the rest of the year, we have a number of important organic growth projects in both the midstream and gas pipeline businesses, in both established and emerging basins.

"For example, the Marcellus Shale is an important new growth area for the partnership. The Transco pipeline runs through the heart of the shale play and we continue to expand our midstream presence - through both the Laurel Mountain Midstream joint venture and the new gathering pipeline we will begin building later this year," Malcolm said.

Guidance Increased for 2010-11, Guidance Introduced for 2012

The chart below shows Williams Partners' 2010-12 commodity price assumptions and the related outlook for its financial results for 2010-12.

Management has increased recurring segment profit guidance for 2010-11 by approximately 10 percent and increased 2011 distributable cash flow guidance by approximately 14 percent. Both increases reflect higher expected average NGL margins in the midstream business for 2010-11.

The partnership is also providing its initial commodity price assumptions and financial results outlook for 2012.




    Commodity Price Assumptions and
     Average NGL Margins                             2010
    -------------------------------                  ----

                                             Low     Mid    High
                                             ---     ---    ----
    Natural Gas ($/MMBtu):
        NYMEX                               $4.00   $4.50   $5.00
        Rockies                             $3.75   $4.20   $4.65
        San Juan                            $3.85   $4.35   $4.85

    Oil / NGL:
        Crude Oil - WTI ($ per barrel)        $70     $80     $90
        Crude to Gas Ratio                 17.5x   17.8x   18.0x
        NGL to Crude Oil Relationship (1)      54%     56%     57%

    Average NGL Margins ($ per gallon)      $0.52   $0.64   $0.75

    Williams Partners Guidance
    --------------------------
    Amounts are in millions except
     coverage ratio.
                                             Low     Mid    High
                                             ---     ---    ----
    DCF attributable to partnership
     ops. (2) (3)                          $1,050  $1,225  $1,400

    Total Cash Distribution (3)              $828    $828    $828

    Cash Distribution Coverage Ratio
     (2) (3)                                1.3x    1.5x    1.7x

    Recurring Segment Profit:
        Gas Pipeline                         $610    $635    $660
        Midstream                             775     950   1,125
                                              ---     ---   -----
    Total Recurring Segment Profit         $1,385  $1,585  $1,785

    Recurring Segment Profit + DD&A:
        Gas Pipeline                         $950    $985  $1,020
        Midstream                             990   1,175   1,360
                                              ---   -----   -----
    Total Recurring Segment Profit +
     DD&A                                  $1,940  $2,160  $2,380

    Capital Expenditures:
        Maintenance                          $315    $335    $355
        Growth                                660     765     870
                                              ---     ---     ---
    Total Capital Expenditures               $975  $1,100  $1,225



    Commodity Price Assumptions and
     Average NGL Margins                             2011
    -------------------------------                  ----

                                             Low     Mid    High
                                             ---     ---    ----
    Natural Gas ($/MMBtu):
        NYMEX                               $4.50   $5.50   $6.50
        Rockies                             $4.25   $5.20   $6.15
        San Juan                            $4.35   $5.30   $6.25

    Oil / NGL:
        Crude Oil - WTI ($ per barrel)        $71     $86    $101
        Crude to Gas Ratio                 15.5x   15.7x   15.8x
        NGL to Crude Oil Relationship (1)      53%     54%     55%

    Average NGL Margins ($ per gallon)      $0.51   $0.65   $0.78

    Williams Partners Guidance
    --------------------------
    Amounts are in millions except
     coverage ratio.
                                             Low     Mid    High
                                             ---     ---    ----
    DCF attributable to partnership
     ops. (2) (3)                          $1,250  $1,500  $1,750

    Total Cash Distribution (3)              TBD     TBD     TBD

    Cash Distribution Coverage Ratio
     (2) (3)                                1.4x    1.7x    1.9x

    Recurring Segment Profit:
        Gas Pipeline                         $650    $670    $690
        Midstream                             800   1,025   1,250
                                              ---   -----   -----
    Total Recurring Segment Profit         $1,450  $1,695  $1,940

    Recurring Segment Profit + DD&A:
        Gas Pipeline                       $1,000  $1,030  $1,060
        Midstream                           1,035   1,270   1,505
                                            -----   -----   -----
    Total Recurring Segment Profit +
     DD&A                                  $2,035  $2,300  $2,565

    Capital Expenditures:
        Maintenance                          $300    $320    $340
        Growth                                425     580     735
                                              ---     ---     ---
    Total Capital Expenditures               $725    $900  $1,075



    Commodity Price Assumptions and
     Average NGL Margins                             2012
    -------------------------------                  ----

                                             Low     Mid    High
                                             ---     ---    ----
    Natural Gas ($/MMBtu):
        NYMEX                               $4.80   $5.95   $7.10
        Rockies                             $4.50   $5.60   $6.70
        San Juan                            $4.65   $5.75   $6.85

    Oil / NGL:
        Crude Oil - WTI ($ per barrel)        $72     $87    $102
        Crude to Gas Ratio                 14.4x   14.7x   15.0x
        NGL to Crude Oil Relationship (1)      52%     54%     55%

    Average NGL Margins ($ per gallon)      $0.47   $0.60   $0.72

    Williams Partners Guidance
    --------------------------
    Amounts are in millions except
     coverage ratio.
                                             Low     Mid    High
                                             ---     ---    ----
    DCF attributable to partnership
     ops. (2) (3)                          $1,300  $1,525  $1,750

    Total Cash Distribution (3)              TBD     TBD     TBD

    Cash Distribution Coverage Ratio
     (2) (3)                                1.4x    1.7x    1.9x

    Recurring Segment Profit:
        Gas Pipeline                         $700    $720    $740
        Midstream                             825   1,050   1,275
                                              ---   -----   -----
    Total Recurring Segment Profit         $1,525  $1,770  $2,015

    Recurring Segment Profit + DD&A:
        Gas Pipeline                       $1,060  $1,090  $1,120
        Midstream                           1,060   1,295   1,530
                                            -----   -----   -----
    Total Recurring Segment Profit +
     DD&A                                  $2,120  $2,385  $2,650

    Capital Expenditures:
        Maintenance                          $310    $370    $430
        Growth                                495     635     775
                                              ---     ---     ---
    Total Capital Expenditures               $805  $1,005  $1,205


    (1) This is calculated as the price of natural gas liquids as a
    percentage of the price of crude oil on an equal volume basis.
     (2) Distributable Cash Flow, Cash Distribution Coverage Ratio and
     Recurring Segment Profit are non-GAAP measures.  Reconciliations to
     the most relevant measures included in GAAP are attached to this
     news release.  Also, the Cash Distribution Coverage ratio in the
     chart for 2011-12 is based on the Cash Distribution per LP unit
     level for 1Q 2010 of $0.6575 per quarter.
    (3) For 2010, this amount includes distributable cash flow and total
    cash distributions for the contributed assets for the period Feb. 1
    through Dec. 31.  Previous guidance for 2010 assumed a full year in
    post-restructuring form.

Business Segment Performance

Williams Partners is now reporting its results in its post-asset contribution structure. The partnership's operations are reported through two business segments, Gas Pipeline and Midstream Gas & Liquids.

Gas Pipeline includes the partnership's interstate natural gas pipelines and pipeline joint venture investments. Gas Pipeline also includes the partnership's ownership interest in Williams Pipeline Partners L.P. (NYSE: WMZ), a gas-pipeline focused master limited partnership formed in 2007.

Midstream Gas & Liquids includes the partnership's natural gas gathering, treating and processing business and is comprised of several wholly-owned and partially-owned subsidiaries.



    Consolidated Segment
     Profit                                          1Q
                                                    ---
    Amounts in millions                       2010          2009
                                              ----          ----

    Gas Pipeline                              $169          $172
    Midstream Gas & Liquids                    245            80
                                               ---           ---
    Total Segment Profit                      $414          $252

    Non-recurring items                         (5)            1
                                               ---           ---

    Recurring Segment
     Profit*                                  $409          $253
                                              ====          ====


    * A schedule reconciling segment profit to recurring segment profit
    is attached to this press release.

Gas Pipeline

Williams Partners owns interests in three major interstate natural gas pipeline systems - Transco, Northwest Pipeline and Gulfstream. These systems have a combined total annual throughput of approximately 2,700 trillion British Thermal Units of natural gas, which is approximately 12 percent of the natural gas consumed in the United States. Combined peak-day delivery capacity is approximately 12 billion cubic feet per day.

Gas Pipeline reported segment profit of $169 million for first-quarter 2010, compared with $172 million for first-quarter 2009.

The slightly lower segment profit was due primarily to lower other service revenues and lower production area revenues partially offset by higher revenues from the Sentinel expansion project which was placed in service in fourth-quarter 2009. Higher operating expenses and project development costs, partly offset by lower selling, general and administrative expenses also contributed to the lower results. A $5 million gain on the sale of storage gas partially offset these impacts.

The gas pipeline business has a significant portfolio of expansion projects to expand its services to key markets over the next several years. Among the expansions expected to be placed into service in 2010 are the Mobile Bay South, 85 North and Sundance Trail expansions.

The Mobile Bay South expansion includes a new compression facility in Alabama allowing transportation service to various southbound delivery points. The cost of the project is estimated to be $37 million. The expansion was recently placed into service, increasing capacity by 253 Mdt/d.

The 85 North project is an expansion of the partnership's existing natural gas transmission system from Alabama to various delivery points as far north as North Carolina. The cost of the project is estimated to be $241 million. Phase I service is anticipated to begin in July 2010 and will increase capacity by 90 Mdt/d. A second phase is expected to be placed into service in 2011 and will increase capacity by an additional 218Mdt/d.

Sundance Trail includes approximately 16 miles of 30-inch pipeline between the partnership's existing compressor stations in Wyoming. The project also includes an upgrade to an existing compressor station and is estimated to cost approximately $60 million. The estimated in-service date is November 2010 and will increase capacity by 150 Mdt/d.

Midstream Gas & Liquids

Midstream provides natural gas gathering, treating, and processing; deepwater production handling and oil transportation; and NGL fractionation and storage services.

The business reported segment profit of $245 million for first-quarter 2010, compared with segment profit of $80 million for first-quarter 2009.

The significant increase in segment profit during first-quarter 2010 is primarily the result of much higher per-unit NGL margins compared with the recession-driven, unusually low NGL margins in first-quarter 2009. However, the average NGL margins of $0.58 per gallon for first-quarter 2010 were also an improvement over the fourth-quarter 2009 average of $0.54 per gallon.



    NGL Margin Trend                           2009            2010
                                        -------------------    ----
                                        2Q      3Q      4Q      1Q
                                        ---     ---     ---     ---

    NGL margins (millions)              $103    $142    $169    $193

    NGL equity volumes (gallons in
     millions)                           297     317     314     332

    Per-unit NGL margins ($/gallon)    $0.35   $0.45   $0.54   $0.58

Higher NGL equity sales volumes also contributed to the improved results in the first quarter. New production at Willow Creek, along with unusually low plant recoveries in first-quarter 2009 drove the first-quarter improvement in NGL equity sales volumes.

Higher equity earnings from the partnership's Discovery investment also contributed to the higher segment profit for the quarter. Higher volumes in 2010 and higher processing margins drove the increase in equity earnings from Discovery. The higher volumes in 2010 were the result of new volumes from the Tahiti expansion and the unusually low volumes in 2009 that were caused by hurricanes in late 2008.

The midstream business is currently making progress on a number of organic expansion projects. Among those is the Perdido Norte project in the western deepwater of the Gulf of Mexico. This expansion began startup operations in late first-quarter 2010. The project includes a 200 MMcf/d expansion of the onshore Markham gas processing facility and a total of 184 miles of deepwater oil and gas lines that expand the scale of the partnership's existing infrastructure.

Construction also continues on Williams Partners' major expansion projects including additional processing and NGL production facilities at the Echo Springs facility and related gathering system expansions in the Wamsutter area of Wyoming; a gas gathering pipeline in the Marcellus Shale region and additions to the gathering system infrastructure within the partnership's Laurel Mountain Midstream joint venture.

Definitions of Non-GAAP Financial Measures

This press release includes certain financial measures, Recurring Segment Profit and Distributable Cash Flow that are non-GAAP financial measures as defined under the rules of the Securities and Exchange Commission.

For Williams Partners L.P., Recurring Segment Profit excludes items of income or loss that we characterize as unrepresentative of our ongoing operations. Management believes Recurring Segment Profit provides investors meaningful insight into Williams Partners L.P.'s results from ongoing operations.

For Williams Partners L.P. we define Distributable Cash Flow as net income plus depreciation, amortization and accretion and cash distributions from our equity investments less our earnings from our equity investments, distributions to noncontrolling interests and maintenance capital expenditures. We also adjust for payments and/or reimbursements under an omnibus agreement with Williams and certain non-cash, non-recurring items. Total Distributable Cash Flow is reduced by any amounts associated with operations, which occurred prior to our ownership of the underlying assets to arrive at Distributable Cash Flow attributable to partnership operations.

For Williams Partners L.P. we also calculate the ratio of Distributable Cash Flow attributable to partnership operations to the total cash distributed (cash distribution coverage ratio). This measure reflects the amount of Distributable Cash Flow relative to our cash distribution. We have also provided this ratio calculated using the most directly comparable GAAP measure, net income.

This press release is accompanied by a reconciliation of these non-GAAP financial measures to their nearest GAAP financial measures. Management uses these financial measures because they are accepted financial indicators used by investors to compare company performance. In addition, management believes that these measures provide investors an enhanced perspective of the operating performance of the Partnership's assets and the cash that the business is generating. Neither Recurring Segment Profit nor Distributable Cash Flow are intended to represent cash flows for the period, nor are they presented as an alternative to net income or cash flow from operations. They should not be considered in isolation or as substitutes for a measure of performance prepared in accordance with United States generally accepted accounting principles.

Analyst Meeting in New York City on May 11

Williams' management will host an analyst meeting in New York City on Tuesday, May 11. During the meeting, the company's senior management will present highlights and an overview of Williams' and Williams Partners' natural gas businesses.

The meeting will begin at 8:30 a.m. EDT. The morning session will focus on overviews of Williams and Williams Partners, plus in-depth presentations on Williams Partners' midstream and gas pipeline businesses; the afternoon session will feature an in-depth presentation on Williams' exploration and production business.

Both sessions will be broadcast live via webcast. Participants are encouraged to access the webcast at www.williams.com or www.williamslp.com. Slides will be available the morning of May 11 on both web sites for viewing, downloading and printing. A replay of the analyst meeting webcast will be available for two weeks following the event at the web sites listed above.

Today's Analyst Call

Management will discuss the first-quarter results and outlook during a live webcast beginning at 11 a.m. EDT today. Participants are encouraged to access the webcast and slides for viewing, downloading and printing at www.williamslp.com.

A limited number of phone lines also will be available at (888) 417-8531. International callers should dial (719) 325-2101. Replays of the first-quarter webcast, in both streaming and downloadable podcast formats, will be available for two weeks at www.williamslp.com following the event.

Form 10-Q

The partnership plans to file its Form 10-Q with the Securities and Exchange Commission today. The document will be available on both the SEC and Williams Partners web sites.

About Williams Partners L.P. (NYSE: WPZ)

Williams Partners L.P. is a leading diversified master limited partnership focused on natural gas transportation; gathering, treating, and processing; storage; natural gas liquid (NGL) fractionation; and oil transportation. The partnership owns interests in three major interstate natural gas pipelines that, combined, deliver 12 percent of the natural gas consumed in the United States. The partnership's gathering and processing assets include large-scale operations in the U.S. Rocky Mountains and both onshore and offshore along the Gulf of Mexico. Williams (NYSE: WMB) owns approximately 84 percent of Williams Partners, including the general-partner interest. More information is available at www.williamslp.com. Go to http://www.b2i.us/irpass.asp?BzID=1296&to=ea&s=0 or http://www.b2i.us/irpass.asp?BzID=630&to=ea&s=0 to join our e-mail list.




    Contact:      Jeff Pounds
                  Williams (media relations)
                  (918) 573-3332

                  Travis Campbell
                  Williams (investor relations)
                  (918) 573-2944

                  Sharna Reingold
                  Williams (investor relations)
                  (918) 573-2078

                  David Sullivan
                  Williams (investor relations)
                  (918) 573-9360

Williams Partners L.P. is a limited partnership formed by The Williams Companies, Inc. (Williams). Our reports, filings, and other public announcements may contain or incorporate by reference statements that do not directly or exclusively relate to historical facts. Such statements are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. You typically can identify forward-looking statements by various forms of words such as "anticipates," "believes," "seeks," "could," "may," "should," "continues," "estimates," "expects," "forecasts," "intends," "might," "goals," "objectives," "targets," "planned," "potential," "projects," "scheduled," "will," or other similar expressions. These forward-looking statements are based on management's beliefs and assumptions and on information currently available to management and include, among others, statements regarding:

    --  Amounts and nature of future capital expenditures;
    --  Expansion and growth of our business and operations;
    --  Financial condition and liquidity;
    --  Business strategy;
    --  Cash flow from operations or results of operations;
    --  The levels of cash distributions to unitholders;
    --  Seasonality of certain business segments; and
    --  Natural gas and natural gas liquids prices and demand.

Forward-looking statements are based on numerous assumptions, uncertainties and risks that could cause future events or results to be materially different from those stated or implied in this announcement. Many of the factors that will determine these results are beyond our ability to control or predict. Specific factors that could cause actual results to differ from results contemplated by the forward-looking statements include, among others, the following:

    --  Whether we have sufficient cash from operations to enable us to maintain
        current levels of cash distributions or to pay the minimum quarterly
        distribution following establishment of cash reserves and payment of
        fees and expenses, including payments to our general partner;
    --  Availability of supplies (including the uncertainties inherent in
        assessing and estimating future natural gas reserves), market demand,
        volatility of prices, and the availability and cost of capital;
    --  Inflation, interest rates and general economic conditions (including
        future disruptions and volatility in the global credit markets and the
        impact of these events on our customers and suppliers);
    --  The strength and financial resources of our competitors;
    --  Development of alternative energy sources;
    --  The impact of operational and development hazards;
    --  Costs of, changes in, or the results of laws, government regulations
        (including proposed climate change legislation), environmental
        liabilities, litigation and rate proceedings;
    --  Our allocated costs for defined benefit pension plans and other
        postretirement benefit plans sponsored by our affiliates;
    --  Changes in maintenance and construction costs;
    --  Changes in the current geopolitical situation;
    --  Our exposure to the credit risks of our customers;
    --  Risks related to strategy and financing, including restrictions stemming
        from our debt agreements, future changes in our credit ratings and the
        availability and cost of credit;
    --  Risks associated with future weather conditions;
    --  Acts of terrorism; and
    --  Additional risks described in our filings with the Securities and
        Exchange Commission (SEC).

Given the uncertainties and risk factors that could cause our actual results to differ materially from those contained in any forward-looking statement, we caution investors not to unduly rely on our forward-looking statements. We disclaim any obligations to and do not intend to update the above list or to announce publicly the result of any revisions to any of the forward-looking statements to reflect future events or developments.

In addition to causing our actual results to differ, the factors listed above may cause our intentions to change from those statements of intention set forth in this report. Such changes in our intentions may also cause our results to differ. We may change our intentions, at any time and without notice, based upon changes in such factors, our assumptions, or otherwise.

Limited partner interests are inherently different from the capital stock of a corporation, although many of the business risks to which we are subject are similar to those that would be faced by a corporation engaged in a similar business. Investors are urged to closely consider the disclosures and risk factors in our annual report on Form 10-K filed with the SEC on February 25, 2010, and our quarterly reports on Form 10-Q available from our offices or from our website at www.williamslp.com.


    Reconciliation of Non-GAAP Measures
    (UNAUDITED)


         This press release includes certain financial measures, Recurring
         Segment Profit and Distributable Cash Flow that are non-GAAP
         financial measures as defined under the rules of the Securities and
         Exchange Commission.
          For Williams Partners L.P., Recurring Segment Profit excludes items
          of income or loss that we characterize as unrepresentative of our
          ongoing operations.  Management believes Recurring Segment Profit
          provides investors meaningful insight into Williams Partners L.P.'s
          results from ongoing operations.
          For Williams Partners L.P. we define Distributable Cash Flow as net
          income plus depreciation, amortization and accretion and cash
          distributions from our equity investments less our earnings from
          equity investments, distributions to noncontrolling interests and
          maintenance capital expenditures.  We also adjust for payments and/
          or reimbursements under an omnibus agreement with Williams and
          certain non-cash, non-recurring items.  Total Distributable Cash
          Flow is reduced by any amounts associated with operations, which
          occurred prior to our ownership of the underlying assets to arrive
          at Distributable Cash Flow attributable to partnership operations.
          For Williams Partners L.P. we also calculate the ratio of
          Distributable Cash Flow attributable to partnership operations to
          the total cash distributed (cash distribution coverage ratio).  This
          measure reflects the amount of Distributable Cash Flow relative to
          our cash distribution.  We have also provided this ratio calculated
          using the most directly comparable GAAP measure, net income.
         This press release is accompanied by a reconciliation of these non-
         GAAP financial measures to their nearest GAAP financial measures.
         Management uses these financial measures because they are accepted
         financial indicators used by investors to compare company
         performance.  In addition, management believes that these measures
         provide investors an enhanced perspective of the operating
         performance of the Partnership's assets and the cash that the
         business is generating.  Neither Recurring Segment Profit nor
         Distributable Cash Flow are intended to represent cash flows for the
         period, nor are they presented as an alternative to net income or
         cash flow from operations.  They should not be considered in
         isolation or as substitutes for a measure of performance prepared in
         accordance with United States generally accepted accounting
         principles.
         --------------------------------------------------------------------


                                               2009 (a)                   2010
                                               --------                   ----
                                  1st    2nd     3rd     4th    Full    1st
    (Millions)                    Qtr    Qtr     Qtr     Qtr    Year    Qtr
    ----------                   ----   ----    ----    ----   -----   ----

    Williams Partners L.P.
    Reconciliation of Non-GAAP
     "Distributable Cash Flow"
     to GAAP "Net income"

    Net income                    $183   $215    $279    $354  $1,031   $313
    Depreciation and
     amortization                  131    131     133     136     531    134
    Non-cash amortization of
     debt issuance costs
     included in interest
     expense                         2      3       2       3      10      4
    Equity earnings from
     investments                    (5)   (16)    (30)    (30)    (81)   (26)
    Distributions to
     noncontrolling interests       (6)    (6)     (6)     (6)    (24)    (6)
    Gain on sale of assets           -      -       -     (40)    (40)     -
    Involuntary conversion gain
     resulting from Ignacio fire     1      -      (5)      -      (4)     -
    Reimbursements (payments)
     from/(to) Williams under
     omnibus agreement               -      1       1       -       2      -
    Maintenance capital
     expenditures                  (15)   (31)   (103)   (109)   (258)   (32)
                                   ---    ---

    Distributable Cash Flow
     excluding equity
     investments                   291    297     271     308   1,167    387
    Plus: Equity investments
     cash distributions to
     Williams Partners L.P.          8     15      27      37      87     29
                                   ---    ---     ---     ---     ---    ---

    Distributable Cash Flow        299    312     298     345   1,254    416
    Less: Pre-partnership
     Distributable Cash Flow       269    281     236     277   1,063    143
                                   ---    ---     ---     ---   -----    ---

    Distributable cash flow
     attributable to partnership
     operations                    $30    $31     $62     $68    $191   $273
                                   ===    ===     ===     ===    ====   ====

    Total cash distributed:        $34    $34     $34     $34    $137   $155

    Coverage ratios:
    Distributable cash flow
     attributable to partnership
     operations divided by Total
     cash distributed             0.88   0.92    1.80    1.97    1.39   1.76
                                  ====   ====    ====    ====    ====   ====

    Net income divided by Total
     cash distributed             5.35   6.32    8.16   10.35    7.55   2.02
                                  ====   ====    ====   =====    ====   ====


    (a)  Amounts reported above for 2009 have been recast to reflect the
    impact of the February 2010 dropdown of certain assets from The
    Williams Companies to Williams Partners L.P.


    Reconciliation of GAAP "Segment Profit" to Non-GAAP "Recurring
    Segment Profit"
    (UNAUDITED)


                                              2009*                   2010
                                              -----                   ----
                                  1st   2nd   3rd    4th            1st
    (Dollars in millions)         Qtr   Qtr   Qtr    Qtr    Year    Qtr
    ---------------------        ----  ----  ----   ----    ----   ----



    Gas Pipeline                  $172  $155  $148   $160    $635   $169
    Midstream Gas &
     Liquids                        80   130   199    264     673    245

      Segment Profit              $252  $285  $347   $424  $1,308   $414
                                  ====  ====  ====   ====  ======   ====

    Nonrecurring items:
    Gas Pipeline
    ------------
      Unclaimed property
       assessment accrual -
       TGPL                          -     -     -      3       3      -
      Unclaimed property
       assessment accrual -
       NWP                           -     -     -      1       1      -
      Gain on sale of base
       gas from Hester
       storage field                 -     -     -      -       -     (5)
           Total Gas Pipeline
            nonrecurring items       -     -     -      4       4     (5)

    Midstream Gas &
     Liquids
    ---------------
      Involuntary
       conversion gain
       related to Ignacio            1     -    (5)     -      (4)     -
      Gain on sale of
       Cameron Meadows               -     -     -    (40)    (40)     -
      Restructuring
       transaction costs             -     -     -      1       1      -
           Total Midstream Gas &
            Liquids nonrecurring
            items                    1     -    (5)   (39)    (43)     -

      Total nonrecurring
       items included in
       segment profit                1     -    (5)   (35)    (39)    (5)

      Recurring segment
       profit                     $253  $285  $342   $389  $1,269   $409
                                  ====  ====  ====   ====  ======   ====


    * Amounts reported above for 2009 have been recast to reflect the
    impact of the February 2010 dropdown of certain assets from The
    Williams Companies to Williams Partners L.P.


    Williams Partners L.P.
    (UNAUDITED)


                                      Full Year Forecasted 2010
                                      -------------------------
    (Millions)                     Low         Midpoint        High
    ----------                     ---         --------        ----

    Reconciliation of Non-GAAP
     "Distributable Cash Flow
     attributable to
     partnership operations" to
     GAAP "Net income"

    Net income                      $925         $1,113       $1,300
    Depreciation and
     amortization                    555            575          595
    Other                           (115)          (128)        (140)
    Maintenance capital
     expenditures                   (315)          (335)        (355)
                                    ----           ----         ----

    Distributable cash flow
     attributable to
     partnership operations       $1,050         $1,225       $1,400
                                  ======         ======       ======

    Total cash to be
     distributed                    $828           $828         $828

    Coverage ratios:

    Distributable cash flow
     attributable to
     partnership operations
     divided by Total cash
     distributed *                   1.3         1.5       1.7
                                     ===            ===          ===

    Net income divided by Total
     cash distributed *              1.1            1.3          1.6
                                     ===            ===          ===



                                      Full Year Forecasted 2011
                                      -------------------------
    (Millions)                     Low         Midpoint        High
    ----------                     ---         --------        ----

    Reconciliation of Non-GAAP
     "Distributable Cash Flow
     attributable to
     partnership operations" to
     GAAP "Net income"

    Net income                      $935         $1,190       $1,445
    Depreciation and
     amortization                    585            605          625
    Other                             30             25           20
    Maintenance capital
     expenditures                   (300)          (320)        (340)
                                    ----           ----         ----

    Distributable cash flow
     attributable to
     partnership operations       $1,250         $1,500       $1,750
                                  ======         ======       ======

    Total cash to be
     distributed                    TBD           TBD           TBD

    Coverage ratios:

    Distributable cash flow
     attributable to
     partnership operations
     divided by Total cash
     distributed *                   1.4         1.7       1.9
                                     ===            ===          ===

    Net income divided by Total
     cash distributed *              1.0            1.3          1.6
                                     ===            ===          ===



                                      Full Year Forecasted 2012
                                      -------------------------
    (Millions)                     Low         Midpoint        High
    ----------                     ---         --------        ----

    Reconciliation of Non-GAAP
     "Distributable Cash Flow
     attributable to
     partnership operations" to
     GAAP "Net income"

    Net income                    $1,025         $1,288       $1,550
    Depreciation and
     amortization                    595            615          635
    Other                            (10)            (8)          (5)
    Maintenance capital
     expenditures                   (310)          (370)        (430)
                                    ----           ----         ----

    Distributable cash flow
     attributable to
     partnership operations       $1,300         $1,525       $1,750
                                  ======         ======       ======

    Total cash to be
     distributed                    TBD           TBD           TBD

    Coverage ratios:

    Distributable cash flow
     attributable to
     partnership operations
     divided by Total cash
     distributed *                   1.4         1.7       1.9
                                     ===            ===          ===

    Net income divided by Total
     cash distributed *              1.1            1.4          1.7
                                     ===            ===          ===


    * Calculations based on announced first quarter 2010 cash
    distribution amount of $.6575/per unit.



    Reconciliation of Non-GAAP "Recurring Segment Profit" to GAAP
    "Segment Profit"



    Segment Profit:
      Midstream                    $775    $950  $1,125    $800 $1,025
      Gas Pipeline                  615     640     665     650    670
                                    ---     ---     ---     ---    ---
    Total Segment Profit          1,390   1,590   1,790   1,450  1,695
    Nonrecurring items:
      Gas Pipeline -Gain on sale
       of Hester gas                 (5)     (5)     (5)      -      -
                                    ---     ---     ---     ---    ---
    Recurring segment profit     $1,385  $1,585  $1,785  $1,450 $1,695
                                 ======  ======  ======  ====== ======




    Segment Profit:
      Midstream                  $1,250   $825 $1,050 $1,275
      Gas Pipeline                  690    700    720    740
                                    ---    ---    ---    ---
    Total Segment Profit          1,940  1,525  1,770  2,015
    Nonrecurring items:
      Gas Pipeline -Gain on sale
       of Hester gas                  -      -      -      -
                                    ---    ---    ---    ---
    Recurring segment profit     $1,940 $1,525 $1,770 $2,015
                                 ====== ====== ====== ======

SOURCE Williams Partners L.P.