all debt and common and preferred stock issuances by entergy texas require prior regulatory approval . debt issuances are also subject to issuance tests set forth in its bond indenture and other agreements . entergy texas has sufficient capacity under these tests to meet its foreseeable capital needs . entergy texas 2019s receivables from or ( payables to ) the money pool were as follows as of december 31 for each of the following years. .
what portion of the credit allowance was outstanding on december 31 , 2017 ? ( % (  % ) )
see note 4 to the financial statements for a description of the money pool . entergy texas has a credit facility in the amount of $ 150 million scheduled to expire in august 2022 . the credit facility allows entergy texas to issue letters of credit against $ 30 million of the borrowing capacity of the facility . as of december 31 , 2017 , there were no cash borrowings and $ 25.6 million of letters of credit outstanding under the credit facility . in addition , entergy texas is a party to an uncommitted letter of credit facility as a means to post collateral to support its obligations to miso . as of december 31 , 2017 , a $ 22.8 million letter of credit was outstanding under entergy texas 2019s letter of credit facility . see note 4 to the financial statements for additional discussion of the credit facilities . entergy texas obtained authorizations from the ferc through october 2019 for short-term borrowings , not to exceed an aggregate amount of $ 200 million at any time outstanding , and long-term borrowings and security issuances . see note 4 to the financial statements for further discussion of entergy texas 2019s short-term borrowing limits . entergy texas , inc . and subsidiaries management 2019s financial discussion and analysis state and local rate regulation and fuel-cost recovery the rates that entergy texas charges for its services significantly influence its financial position , results of operations , and liquidity . entergy texas is regulated and the rates charged to its customers are determined in regulatory proceedings . the puct , a governmental agency , is primarily responsible for approval of the rates charged to customers . filings with the puct 2011 rate case in november 2011 , entergy texas filed a rate case requesting a $ 112 million base rate increase reflecting a 10.6% ( 10.6 % ) return on common equity based on an adjusted june 2011 test year . a0 a0the rate case also proposed a purchased power recovery rider . a0 a0on january 12 , 2012 , the puct voted not to address the purchased power recovery rider in the rate case , but the puct voted to set a baseline in the rate case proceeding that would be applicable if a purchased power capacity rider is approved in a separate proceeding . a0 a0in april 2012 the puct staff filed direct testimony recommending a base rate increase of $ 66 million and a 9.6% ( 9.6 % ) return on common equity . a0 a0the puct staff , however , subsequently filed a statement of position in the proceeding indicating that it was still evaluating the position it would ultimately take in the case regarding entergy texas 2019s recovery of purchased power capacity costs and entergy texas 2019s proposal to defer its miso transition expenses . a0 a0in april 2012 , entergy texas filed rebuttal testimony indicating a revised request for a $ 105 million base rate increase . a0 a0a hearing was held in late-april through early-may 2012 . in september 2012 the puct issued an order approving a $ 28 million rate increase , effective july 2012 . a0 a0the order included a finding that 201ca return on common equity ( roe ) of 9.80 percent will allow [entergy texas] a reasonable opportunity to earn a reasonable return on invested capital . 201d a0 a0the order also provided for increases in depreciation rates and the annual storm reserve accrual . a0 a0the order also reduced entergy texas 2019s proposed purchased power capacity costs , stating that they are not known and measurable ; reduced entergy texas 2019s regulatory assets associated with hurricane rita ; excluded from rate recovery capitalized financially-based incentive compensation ; included $ 1.6 million of miso transition expense in base rates ; and reduced entergy 2019s texas 2019s fuel reconciliation recovery by $ 4 .