Borrowings and Other Financing Instruments

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Borrowings and Other Financing Instruments

Short-Term Borrowings

SPS meets its short-term liquidity requirements primarily through the issuance of commercial paper and borrowings under its credit facility and the money pool.

Money Pool — Xcel Energy and its utility subsidiaries have established a money pool arrangement that allows for short-term investments in and borrowings between the utility subsidiaries. Xcel Energy may make investments in the utility subsidiaries at market-based interest rates; however, the money pool arrangement does not allow the utility subsidiaries to make investments in Xcel Energy.

Money pool borrowings:

(Amounts in Millions, Except Interest Rates)	Three Months Ended Sept. 30, 2023			Year Ended Dec. 31, 2022
Borrowing limit	$	100		$	100
Amount outstanding at period end	—			—
Average amount outstanding	73			35
Maximum amount outstanding	100			100
Weighted average interest rate, computed on a daily basis	5.19		%	0.44		%
Weighted average interest rate at period end	N/A			N/A

Commercial Paper — Commercial paper outstanding:

(Amounts in Millions, Except Interest Rates)	Three Months Ended Sept. 30, 2023			Year Ended Dec. 31, 2022
Borrowing limit	$	500		$	500
Amount outstanding at period end	—			34
Average amount outstanding	47			100
Maximum amount outstanding	119			324
Weighted average interest rate, computed on a daily basis	5.35		%	0.79		%
Weighted average interest rate at period end	N/A			4.55

Letters of Credit — SPS uses letters of credit, generally with terms of one year, to provide financial guarantees for certain obligations. At both Sept. 30, 2023 and Dec. 31, 2022, there were $2 million of letters of credit outstanding under the credit facility. Amounts approximate their fair value and are subject to fees.

Revolving Credit Facility — In order to issue its commercial paper, SPS must have a revolving credit facility equal to or greater than the commercial paper borrowing limit and cannot issue commercial paper exceeding available capacity under this credit facility. The credit facility provides short-term financing in the form of notes payable to banks, letters of credit and back-up support for commercial paper borrowings.

SPS has the right to request an extension of the revolving credit facility termination date for two additional one-year periods. All extension requests are subject to majority bank group approval.

As of Sept. 30, 2023, SPS had the following committed revolving credit facility available (in millions of dollars):

Credit Facility (a)		Drawn (b)		Available
$	500	$	2	$	498

(a)Expires in September 2027.

(b)Includes outstanding letters of credit.

All credit facility bank borrowings, outstanding letters of credit and outstanding commercial paper reduce the available capacity under the credit facility. SPS had no direct advances on the credit facility outstanding as of Sept. 30, 2023 and Dec. 31, 2022.

Long-Term Borrowings

During the nine months ended September 30, 2023, SPS issued $100 million of 6.00% first mortgage bonds due September 15, 2053.