Mark Collin
Analyst · Janney Capital Markets
Thanks, Bob, and good afternoon everyone. Let me begin by discussing our financial results on Slide 7. Earnings increased by $400,000 for the quarter and by $700,000 for the first half of this year.
Results for the second quarter and first half of this year were driven primarily by higher natural gas and electric sales margins reflecting higher rates from recently completed rate cases, but partially offset by lower sales volumes and increases in operating expenses.
As Bob indicated in the first 6 months of 2012, we experienced 20% fewer heating degree days compared to prior year which negatively impacted our sales volumes. We estimate that the weather negatively impacted our earnings by about $2 million or $0.17 per share compared to prior year.
As a reminder, our financial results reflect the seasonal nature of our utility business. Annual gas revenues are substantially realized during the heating season as a result of higher sales of natural gas due to cold weather.
Accordingly, the results of operations are historically most favorable in the first and fourth quarters. Sales of electricity are generally less sensitive to weather than natural gas sales, but may also be affected by the weather conditions in both the winter and summer seasons.
Fluctuations in seasonal weather conditions between years may have a significant effect on our financial results. Looking at natural gas sales margin, they were up $2.8 million and $5.3 million in the quarter and in the first half of this year.
Sales margins were favorably affected by increased base rate and decoupling revenues from recently completed rate cases and the growth in new gas customers. Partially offsetting these increases were lowered gas therm sales volume which decreased 7.8% and 10.1% in the quarter in the first half of this year.
The decrease in gas therm sales reflects the effect of milder weather in the 6 months of 2012 compared to 2011. Worth noting that approximately 13% of our natural gas therm sales are decoupled and changes in these sales due to the weather do not affect sales margins.
Turning to electric sales margins, they were up $1.6 million in both the quarter and in the 6 month period ended June. The increase gas sales margin reflect higher base rate and decoupling revenues from recent completed electric rate cases, partially offset by lower electric sales volumes.
Total electric kWh sales decreased 2.7% and 3.8% in the quarter and in the first half of this year. The decreases in kWh sales primarily reflect the effect of milder weather in the first 6 months of 2012 compared to 2011.
Approximately 27% of electric kWh sales are decoupled and changes in these sales due to the weather do not affect sales margins. Usource, our non-regulated energy brokering business, recorded revenues which were down by about $100,000 in both the quarter and the first half of the year also reflecting the milder weather in 2012.
Turning to operation and maintenance expenses, operation and maintenance expenses increased $2.4 million and $3.6 million in the quarter and in the first half of the year. The increase in O&M expenses in the first half of this year over the prior year reflects lower O&M expenses reported in the first quarter of 2011 due to the receipt of a one time $1 million insurance payment.
Other changes in O&M expense in the 6 months period include higher utility operating cost of $1.2 million, higher employee compensation and benefit cost of $0.9 million and higher professional fees of $0.5 million.
Utility operating costs in the first half of this year include approximately $1.5 million of spending on vegetation management and electrical reliability enhancement programs. These costs are recovered through cost tracker rate mechanisms that result in corresponding increases in revenue.
Depreciation and amortization expense increased $1 million and $1.4 million in the quarter and in the first half of the year respectively, principally reflecting normal utility plan additions and amortization of regulatory assets.
Local property and other taxes increased $0.5 million and $0.9 million in the quarter and in the first half of the year reflecting higher local property taxes on higher levels of utility plant and service. Net interest expense decreased $0.2 million and increased $0.1 million in the quarter and in the first half of the year, reflecting normal fluctuations in short-term borrowings and interest income.
Now turning to Slide 8, as Bob mentioned, we completed a common equity offering in May. We used the net proceeds of approximately $66 million to contribute equity to all of our utility subsidiaries, repay short-term debt and for general corporate purposes.
The equity contributions provide for a strong balance sheet at the subsidiary level for our utility growth initiatives in addition to creating a higher equity capitalization ratio upon which we earn a rate of return. The common equity offering also significantly strengthened Unitil Corporation’s consolidated capital structure.
As of June 2012, Unitil’s total debt to capitalization leverage ratio was approximately 53% or about 11% lower than the prior year’s leverage ratio. As a result of the capital raised in the second quarter, we also reduced our corporate credit facility borrowing limit from $115 million down to $60 million reducing the fees associated with this facility while continuing to provide sufficient borrowing availability for our working capital and capital expenditure needs for the foreseeable future.
We expect to continue to fund the majority of our capital needs with cash flow from operations. In the first 6 months of this year, cash flow from operations was $52.9 million up $6.3 million over prior year.
Finally turning to Slide 9, we have provided an update of our operating results at the utility operating company level. The chart shows the last authorized return on equity compared to the actual earned return on equity. The chart also reflects recent equity contributions to all of our utility subsidiaries with the proceeds from the common equity offering completed in May.
With the completion of the rate cases across all of our utility companies, we are bridging the gap between the last authorized and the actual earned return on equity.
Looking forward, we have put in place longer term capital trackers to recover a significant portion of our future capital spending. During this past quarter, we put a number of these trackers in place.
On May 1, we implemented a stepped increase of approximately $1.5 million in annual revenues for Unitil Energy, our New Hampshire Electric Utility, and for the main gas division of Northern; we implemented a step increase of $850,000 in annual revenues. On June 1st, we implemented the step increase of about $500,000 in annual revenues for Fitchburg Electric Transmission System.
Finally, later this year, effective August 1, we expect to implement a cost tracker step increase of about $300,000 to begin the recovery of capital investment we’re making in Granite State Transmission, our interstate pipeline company.
We expect the combination of the rate relief we achieved this past year, future annual cost tracker rate adjustments and organic sales growth will provide meaningful earnings support going forward. We also continue to evaluate the financial results for each of our operating utilities to determine the need for future rate relief.
Now this concludes our summary of our financial performance for the period. I’ll turn the call over to the operator who will coordinate questions from the audience. Thank you.