Christopher Forsythe
Analyst · Bank of America
Thank you, Kevin, and good morning, everyone. Yesterday, we reported fiscal 2020 third quarter diluted earnings per share of $0.96 compared to $0.68 in the prior year quarter. Year-to-date, we reported diluted earnings per share of $4.37 compared to $3.88 in the prior year period. Results for the quarter and year-to-date periods included a onetime noncash income tax benefit of $21 million or $0.17 per diluted share related to a change in our state deferred tax rate resulting from legislation that was passed by the Kansas Legislature in June to eliminate the assessment of state income taxes on regulated utilities operating in the state. As a result of the change in our state deferred tax rate, we reduced our deferred tax liability by $33 million during the fiscal third quarter. We established a $12 million regulatory liability for excess deferred taxes that will be returned to Kansas customers, and we recognize remaining $21 million as a onetime income tax benefit. Excluding this nonrecurring benefit, diluted earnings per share for the third fiscal quarter was $0.79 and $4.2 year-to-date.
Consolidated operating income during the 9 months ended June 30 rose over 10% to $723 million. Rate increases in both our operating segments driven by increased safety and reliability spending totaled $111 million. We also experienced a $10 million increase in distribution operating income, primarily due to customer growth in our Mid-Tex division. During the 12 months ended June 30, our Mid-Tex division experienced net customer growth of 1.6%. On a consolidated basis, we experienced net customer growth of 1.3% over the same period.
The impact of COVID-19 did not have a material impact on our year-to-date operating income as we are able to align our O&M spending with a decline in nonresidential customer consumption we experienced during the third quarter. Through the first 9 months of the fiscal year, we earned approximately 85% of our distribution revenues. Additionally, residential revenues comprised approximately 60% of our distribution revenues during the second half of the year. These bills are at their lowest during this time.
Finally, we collect a significant portion of our revenues, excluding gas costs, through the base charge, which partially insulates us from volumetric risk. For most of our service territories the base charge represents the largest portion of a customer's bill by the middle of our third fiscal quarter. For the year-to-date period, we experienced a $7 million reduction in operating income due to lower sales and transportation volumes during the third quarter. We did not identify a meaningful change in residential consumption due to COVID. However, we did experience a 14% decline in nonresidential consumption. We also saw a $3 million decline in service order revenue, primarily due to the suspension of collection activities. Our nonresidential consumption decline was concentrated in our commercial customer class, which declined 18% during the third quarter compared to the prior year quarter. We experienced most of the volumetric decline in our Mid-Tex and Louisiana divisions.
During the quarter, we saw commercial consumption climb by as much as 30% compared to the 2-year historical average in certain of our states by mid-May as shelter-in-place orders in our service areas impacted their businesses. However, since that time, we have seen a steady improvement. Through mid-July, commercial customer usage was just 11% below the 2-year average over the same period.
Additionally, we experienced a 12% decline in transportation volumes during the third quarter, primarily due to slower economic activity in the Automotive and Metals sectors. These declines in operating income were offset by a $17 million decrease in O&M expense, primarily associated with employee costs for overtime; standby and other costs; lower travel and training costs; and the temporary deferral of pipeline maintenance activities.
In our Pipeline and Storage segment, over 80% of APT's revenues are earned from delivery services to our Mid-Tex division and a few other LDCs under a straight fixed variable rate design. The remainder of APT's revenues relates to its 3 system business and other ancillary pipeline services. As a reminder, APT only keeps 25% of revenues earned from these activities under its straight design.
During the third quarter, we experienced a net $2.5 million decrease in transportation and other revenue in this segment. APT's quarter-over-quarter through-system volumes declined 19% and prices declined by 30% due to reduced associated gas production in the Permian Basin. Year-to-date, transportation and other revenue declined by less than $1 million.
Slides 6 and 7 provide additional details of period-over-period changes to operating income for each of our segments. On the regulatory front, to date, we have implemented $123 million in annual operating income increases. Additionally, we received approval for the 4 Texas GRIP filings that we voluntarily delayed in March for $23 million. These filings will be implemented on September 1. Currently, we have $141 million of regulatory filings in progress, most of which are scheduled to be implemented during the first quarter of fiscal 2021. Details of these filings can be found on Slides 19 through 29.
And other regulatory matters, we have orders in 5 of our 8 states that address the impacts of COVID-19. These orders cover more than 85% of our distribution customers and APT. Generally, these orders allow us to defer net incremental expenses, including bad debt expense and in a few of our states, certain lost revenues due to COVID-19. We are still evaluating these orders. Therefore, we did not record any regulatory assets or liabilities related to COVID-19 as of June 30. Slide 14 summarizes these orders.
As of June 30, our balance sheet and liquidity remains strong. Our equity capitalization was 58.8%, and we finished the quarter with approximately $2.9 billion in liquidity, including $750 million in cash between our operating accounts and ATM net proceeds.
During the third quarter, we executed new forward sales arrangements for approximately 2.3 million shares with anticipated net proceeds of $234 million. Additionally, we sold approximately 1 million shares for $100 million. Through June 30, we had sold about 3.6 million shares for $359 million. And as of June 30, we had about $547 million in cash available under equity forward arrangements.
Yesterday, we reaffirmed our adjusted earnings per share guidance range of $4.58 to $4.73. We now have more clarity around how COVID has and continues to affect our business from a customer perspective and an operational perspective. Based on what we understand today, we now believe earnings per share will be at the upper end of the range. For the fourth quarter, we have assumed similar nonresidential consumption declines that we experienced in the third quarter as several of our states have slowed the pace of reopening their economies. Additionally, we expect fourth quarter O&M to trend similarly to what we experienced during the third quarter. Slides 15 and 16 provide additional details around our guidance.
Thanks for your time this morning. I'll now turn the call back over to Kevin for some closing remarks.