8.	Borrowings Under Credit Facilities

InfraREIT LP Revolving Credit Facilities

On January 3, 2014, InfraREIT LP entered into a credit agreement, as amended, led by Bank of America, N.A. as administrative agent, which established a revolving credit facility of $130.0 million that included a letter of credit facility. On November 13, 2014, the credit facility was amended to extend the maturity date to March 31, 2015. On December 10, 2014, the credit facility was repaid and terminated using proceeds from InfraREIT LP’s new $75.0 million credit facility and SDTS’s amended credit agreement entered into on December 10, 2014, as discussed below.

On December 10, 2014, InfraREIT LP entered into a new $75.0 million revolving credit facility, led by Bank of America, N.A., as administrative agent, with up to $15.0 million available for issuance of letters of credit and a maturity date of December 10, 2019. The revolving credit facility is secured by substantially all of the assets of the Operating Partnership, including the Operating Partnership’s equity interests in its subsidiary, Transmission and Distribution Company, LLC (TDC). In addition, TDC guarantees the revolving credit facility and this guarantee is secured by the assets of, and InfraREIT LP’s equity interests in, TDC. Upon consummation of the IPO and Merger, InfraREIT, Inc. became a guarantor under this revolving credit facility.

The credit agreement requires InfraREIT LP to comply with coverage ratios on a consolidated basis and contains affirmative and negative covenants, including, but not limited to, limitations on additional debt, liens, investments, mergers, acquisitions, dispositions or entry into any line of business other than the business of the transmission and distribution of electric power and the provision of ancillary services and certain restrictions on the payment of dividends. The credit agreement also contains restrictions on the amount of Sharyland’s indebtedness and other restrictions on, and covenants applicable to, Sharyland.

Borrowings and other extensions of credit under the revolving credit facility bear interest, at InfraREIT LP’s election, at a rate equal to (i) the one, two, three or six month London Interbank Offered Rate (LIBOR) plus 2.5%, or (ii) a base rate (equal to the highest of (A) the Federal Funds Rate plus ½ of 1%, (B) the Bank of America prime rate and (C) LIBOR plus 1%) plus 1.5%. Letters of credit are subject to a letter of credit fee equal to the daily amount available to be drawn times 2.5%. InfraREIT LP is also required to pay a commitment fee and other customary fees under the new revolving credit facility. InfraREIT LP may prepay amounts outstanding under the revolving credit facility in whole or in part without premium or penalty.

There were no outstanding borrowings or letters of credit under the revolving credit facility at March 31, 2015 and there was $75.0 million borrowing capacity available. At December 31, 2014, there was $57.0 million outstanding at a 2.66% interest rate and no letters of credit outstanding with $18.0 million of remaining capacity under this revolving credit facility. As of March 31, 2015 and December 31, 2014, InfraREIT LP was in compliance with all debt covenants under this agreement.

SDTS Credit Agreements

On June 28, 2013, SDTS entered into a second amended and restated credit agreement led by Royal Bank of Canada, as administrative agent, which established a revolving credit facility of $75.0 million that originally matured on June 28, 2018 and included a letter of credit facility.

On December 10, 2014, SDTS’s second amended and restated credit agreement was amended and restated in order to, among other things, increase the amount of the revolving credit facility to a total of $250.0 million and extend the maturity date to December 10, 2019. Up to $25.0 million of the revolving credit facility is available for issuance of letters of credit, and up to $5.0 million of the revolving facility is available for swingline loans. The revolving credit agreement is secured by substantially all of the assets of, and TDC’s equity interests in, SDTS on the same basis as the senior secured notes described below in Note 9, Long-Term Debt. SDTS’s equity interest in SDTS FERC, L.L.C. (SDTS FERC) is also pledged as security for the revolving credit facility.

The interest rate for the revolving credit facility is based, at SDTS’s option, at a rate equal to either (1) a base rate, determined as the greatest of (A) the administrative agent’s prime rate, (B) the federal funds effective rate plus ½ of 1% and (C) LIBOR plus 1.00% per annum, plus a margin of either 0.75% or 1.00% per annum, depending on the total debt to capitalization ratio of SDTS on a consolidated basis or (2) LIBOR plus a margin of either 1.75% or 2.00% per annum, depending on the total debt to capitalization ratio of SDTS on a consolidated basis. SDTS is also required to pay a commitment fee and other customary fees under its revolving credit facility. SDTS is entitled to prepay amounts outstanding under the revolving credit facility with no prepayment penalty.

There were no outstanding borrowing or letters of credit under the credit agreement at March 31, 2015 and there was $250.0 million borrowing capacity available. At December 31, 2014, there were $162.0 million outstanding at an effective interest rate of 1.91% with no letters of credit outstanding and $88.0 million capacity under this revolving credit facility. As of March 31, 2015 and December 31, 2014, SDTS was in compliance with all debt covenants under this agreement.

The revolving credit facilities of InfraREIT LP and SDTS are subject to customary events of default. If an event of default occurs and is continuing, the required lenders may accelerate amounts due under each revolving credit facility (except in the case of a bankruptcy event of default, in which case such amounts will automatically become due and payable).