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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 10-Q

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

CMS Energy Corporation:  Yes T     No o   Consumers Energy Company:  Yes T     No o

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data file required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files).

CMS Energy Corporation:  Yes T     No o   Consumers Energy Company:  Yes T     No o

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

CMS Energy Corporation:

Large accelerated filer T   Accelerated filer o   Non-Accelerated filer o   Smaller reporting company o

(Do not check if a smaller reporting company)

Consumers Energy Company:

Large accelerated filer o   Accelerated filer o   Non-Accelerated filer T   Smaller reporting company o

(Do not check if a smaller reporting company)

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

CMS Energy Corporation:  Yes o    No T   Consumers Energy Company:  Yes o    No T

Indicate the number of shares outstanding of each of the issuer’s classes of common stock at July 5, 2013:

CMS Energy Corporation:

Consumers Energy Company:

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CMS Energy Corporation

Consumers Energy Company

Quarterly Reports on Form 10-Q to the Securities and Exchange Commission for the Period Ended

June 30, 2013

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GLOSSARY

Certain terms used in the text and financial statements are defined below.

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FILING FORMAT

This combined Form 10-Q is separately filed by CMS Energy and Consumers.  Information in this combined Form 10-Q relating to each individual registrant is filed by such registrant on its own behalf.  Consumers makes no representation regarding information relating to any other companies affiliated with CMS Energy other than its own subsidiaries.  None of CMS Energy, CMS Enterprises, nor any of CMS Energy’s other subsidiaries (other than Consumers) has any obligation in respect of Consumers’ debt securities and holders of such debt securities should not consider the financial resources or results of operations of CMS Energy, CMS Enterprises, nor any of CMS Energy’s other subsidiaries (other than Consumers and its own subsidiaries (in relevant circumstances)) in making a decision with respect to Consumers’ debt securities.  Similarly, none of Consumers nor any other subsidiary of CMS Energy has any obligation in respect of debt securities of CMS Energy.

This report should be read in its entirety.  No one section of this report deals with all aspects of the subject matter of this report.  This report should be read in conjunction with the consolidated financial statements and related notes and with MD&A included in the 2012 Form 10-K.

FORWARD-LOOKING STATEMENTS AND INFORMATION

This Form 10-Q and other written and oral statements that CMS Energy and Consumers make may contain forward-looking statements as defined by the Private Securities Litigation Reform Act of 1995.  The use of “might,” “may,” “could,” “should,” “anticipates,” “believes,” “estimates,” “expects,” “intends,” “plans,” “projects,” “forecasts,” “predicts,” “assumes,” and other similar words is intended to identify forward-looking statements that involve risk and uncertainty.  This discussion of potential risks and uncertainties is designed to highlight important factors that may impact CMS Energy’s and Consumers’ businesses and financial outlook.  CMS Energy and Consumers have no obligation to update or revise forward-looking statements regardless of whether new information, future events, or any other factors affect the information contained in the statements.  These forward-looking statements are subject to various factors that could cause CMS Energy’s and Consumers’ actual results to differ materially from the results anticipated in these statements.  These factors include, but are not limited to, the following, all of which are potentially significant:

·      the impact of regulation by the MPSC or FERC and other applicable governmental proceedings and regulations, including any associated impact on electric or gas rates or rate structures;

·      potentially adverse regulatory treatment or failure to receive timely regulatory orders affecting Consumers that are or could come before the MPSC, FERC, MISO, or other governmental authorities;

·      the adoption of federal or state laws or regulations or changes in applicable laws, rules, regulations, principles, or practices, or in their interpretation, including those related to energy policy and ROA, the environment, regulation or deregulation, health care reforms (including the Health Care Acts), taxes, accounting matters, and other business issues that could have an impact on CMS Energy’s or Consumers’ businesses or financial results, including laws or regulations regarding climate change and air emissions and potential effects of the Dodd-Frank Act and related regulations on CMS Energy, Consumers, or any of their affiliates;

·      potentially adverse regulatory or legal interpretations or decisions regarding environmental matters, or delayed regulatory treatment or permitting decisions that are or could come before the MDEQ, EPA, and/or U.S. Army Corps of Engineers, and potential environmental remediation costs associated with these interpretations or decisions, including those that may affect Bay Harbor or Consumers’ RMRR classification under NSR regulations;

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·      changes in energy markets, including availability and price of electric capacity and the timing and extent of changes in commodity prices and availability of coal, natural gas, natural gas liquids, electricity, oil, and certain related products;

·      the price of CMS Energy common stock, the credit ratings of CMS Energy and Consumers, capital and financial market conditions, and the effect of these market conditions on CMS Energy’s and Consumers’ interest costs and access to the capital markets, including availability of financing to CMS Energy, Consumers, or any of their affiliates;

·      the investment performance of the assets of CMS Energy’s and Consumers’ pension and benefit plans and the discount rates used in calculating the plans’ obligations, and the resulting impact on future funding requirements;

·      the impact of the economy, particularly in Michigan, and potential future volatility in the financial and credit markets on CMS Energy’s, Consumers’, or any of their affiliates’ revenues, ability to collect accounts receivable from customers, or cost and availability of capital;

·      changes in the economic and financial viability of CMS Energy’s and Consumers’ suppliers, customers, and other counterparties and the continued ability of these third parties, including third parties in bankruptcy, to meet their obligations to CMS Energy and Consumers;

·      population changes in the geographic areas where CMS Energy and Consumers conduct business;

·      national, regional, and local economic, competitive, and regulatory policies, conditions, and developments, including municipal bankruptcy filings such as the recent filing by the City of Detroit;

·      loss of customer demand for electric generation supply to alternative energy suppliers;

·      federal regulation of electric sales and transmission of electricity, including periodic re-examination by federal regulators of CMS Energy’s and Consumers’ market-based sales authorizations in wholesale power markets without price restrictions;

·      the impact of credit markets, economic conditions, and any new banking regulations on EnerBank;

·      the availability, cost, coverage, and terms of insurance, the stability of insurance providers, and the ability of Consumers to recover the costs of any insurance from customers;

·      the effectiveness of CMS Energy’s and Consumers’ risk management policies, procedures, and strategies, including strategies to hedge risk related to future prices of electricity, natural gas, and other energy-related commodities;

·      factors affecting development of electric generation projects and distribution infrastructure replacement and expansion projects, including those related to project site identification, construction material pricing, availability of qualified construction personnel, permitting, and government approvals;

·      factors affecting operations, such as costs and availability of personnel, equipment, and materials, unusual weather conditions, catastrophic weather-related damage, scheduled or unscheduled equipment outages, maintenance or repairs, environmental incidents, and electric transmission and distribution or gas pipeline system constraints;

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·      potential disruption to, interruption of, or other impacts on facilities, utility infrastructure, or operations due to accidents, explosions, physical disasters, war, or terrorism, and the ability to obtain or maintain insurance coverage for these events;

·      changes or disruption in fuel supply, including but not limited to rail or vessel transport of coal and pipeline transport of natural gas;

·      potential costs, lost revenues, or other consequences resulting from misappropriation of assets or sensitive information, corruption of data, or operational disruption in connection with a cyber attack or other cyber incident;

·      technological developments in energy production, storage, delivery, usage, and metering, including Smart Energy and the success of its implementation;

·      the impact of CMS Energy’s and Consumers’ integrated business software system and its operation on their activities, including utility customer billing and collections;

·      adverse consequences resulting from any past or future assertion of indemnity or warranty claims associated with assets and businesses previously owned by CMS Energy or Consumers, including claims resulting from attempts by foreign or domestic governments to assess taxes on past operations or transactions;

·      the outcome, cost, and other effects of legal or administrative proceedings, settlements, investigations, or claims;

·      restrictions imposed by various financing arrangements and regulatory requirements on the ability of Consumers and other subsidiaries of CMS Energy to transfer funds to CMS Energy in the form of cash dividends, loans, or advances;

·      earnings volatility resulting from the application of fair value accounting to certain energy commodity contracts or interest rate contracts;

·      changes in financial or regulatory accounting principles or policies, including a possible future requirement to comply with International Financial Reporting Standards, which differ from GAAP in various ways, including the present lack of special accounting treatment for regulated activities; and

·      other matters that may be disclosed from time to time in CMS Energy’s and Consumers’ SEC filings, or in other publicly issued documents.

All forward-looking statements should be considered in the context of the risk and other factors described above and as detailed from time to time in CMS Energy’s and Consumers’ SEC filings.  For additional details regarding these and other uncertainties, see Part I – Item 1. Consolidated Financial Statements (Unaudited) – Notes to the Unaudited Consolidated Financial Statements – Note 1, Regulatory Matters and Note 2, Contingencies and Commitments; Part I – Item 2. MD&A – Outlook; and Part II – Item 1A. Risk Factors.

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CMS Energy Corporation

Consumers Energy Company

MANAGEMENT’S DISCUSSION AND ANALYSIS

OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This MD&A is a combined report of CMS Energy and Consumers.

EXECUTIVE OVERVIEW

CMS Energy is an energy company operating primarily in Michigan.  It is the parent holding company of several subsidiaries, including Consumers, an electric and gas utility, and CMS Enterprises, primarily a domestic independent power producer.  Consumers’ electric utility operations include the generation, purchase, distribution, and sale of electricity, and Consumers’ gas utility operations include the purchase, transmission, storage, distribution, and sale of natural gas.  Consumers’ customer base consists of a mix of residential, commercial, and diversified industrial customers.  CMS Enterprises, through its subsidiaries and equity investments, owns and operates power generation facilities.

CMS Energy and Consumers manage their businesses by the nature of services each provides.  CMS Energy operates principally in three business segments:  electric utility; gas utility; and enterprises, its non-utility investments and operations.  Consumers operates principally in two business segments:  electric utility and gas utility.

CMS Energy and Consumers earn revenue and generate cash from operations by providing electric and natural gas utility services; electric distribution and generation; gas transmission, storage, and distribution; and other energy-related services.  Their businesses are affected primarily by:

·      regulation and regulatory matters;

·      economic conditions;

·      weather;

·      energy commodity prices;

·      interest rates; and

·      CMS Energy’s and Consumers’ securities’ credit ratings.

CMS Energy’s business strategy emphasizes the key elements depicted below:

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SAFE, EXCELLENT OPERATIONS

The safety of employees, customers, and the general public remains a priority of CMS Energy and Consumers.  Accordingly, CMS Energy and Consumers have worked to integrate a set of safety principles into their business operations and culture.  These principles include complying with applicable safety, health, and security regulations and implementing programs and processes aimed at continually improving safety and security conditions.  From 2006 to 2012, Consumers achieved a 76 percent reduction in the annual number of recordable safety incidents.

CUSTOMER VALUE

Consumers is undertaking a number of initiatives that reflect its intensified customer focus.  Consumers’ planned investments in reliability are aimed at improving safety, reducing customer outage frequency, reducing repetitive outages, and increasing customer satisfaction.  Also, in order to minimize increases in customer rates, Consumers has undertaken several initiatives to reduce costs through a voluntary separation plan in 2012, accelerated pension funding, employee and retiree health-care cost sharing, negotiated labor agreements, information system efficiencies, and productivity improvement programs.  These initiatives, together with Consumers’ plans to accelerate further cost reductions, should allow Consumers to avoid increasing electric and gas base rates through 2014.  Consumers’ ability to avoid base rate increases is dependent on MPSC approval of certain applications yet to be filed.  Consumers may also reconsider this expectation should its assumptions change regarding the economy or other matters.

UTILITY INVESTMENT

Consumers expects to make capital investments of about $7 billion from 2013 through 2017.  Consumers has limited its capital investment program to those investments it believes are needed to provide safe, reliable, and efficient service to its customers.  Consumers’ capital investment program is expected to result in annual rate base growth of five to seven percent while allowing Consumers to maintain sustainable customer base rate increases (excluding PSCR and GCR charges) at or below the rate of inflation.

Among the key components of Consumers’ investment program are projects that will enhance customer value.  Consumers’ planned base capital investments of $3.2 billion comprise $2.1 billion of electric utility projects to improve reliability and increase capacity and $1.1 billion of gas utility projects to increase capacity and deliverability and enhance pipeline integrity.  An additional $1.4 billion of planned reliability investments at Consumers are aimed at reducing outages and improving customer satisfaction; these investments comprise $0.7 billion at the electric utility to strengthen circuits and substations, replace poles, and upgrade the Ludington pumped-storage plant, and $0.7 billion at the gas utility to replace mains and enhance transmission and storage systems.  Consumers also expects to spend $1.1 billion on environmental investments needed to comply with state and federal laws and regulations.

In December 2012, Consumers announced plans to build a 700-MW gas-fueled electric generating plant at its Thetford complex in Genesee County, Michigan and filed an air permit application with the MDEQ for the proposed plant.  In July 2013, Consumers filed for approval of a certificate of necessity with the MPSC, as allowed under the 2008 Energy Law.  Construction of the plant, at an estimated cost of $750 million, is contingent upon obtaining the certificate of necessity and environmental permits.  Consumers expects the plant to be operational in 2017.

Renewable energy projects are another major component of Consumers’ planned capital investments.  Consumers expects to spend $0.3 billion on renewable energy investments, under an MPSC-approved renewable energy plan, from 2013 through 2017.  The 2008 Energy Law requires that at least ten percent of Consumers’ electric sales volume come from renewable energy sources by 2015, and it includes requirements for specific capacity additions.  Consumers has historically included renewable resources as part of its portfolio, with about eight percent of its present power supply coming from such renewable sources as hydropower, landfill gas, biomass, wind, anaerobic digestion, and solar.

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Consumers’ Smart Energy program, with an estimated total project capital cost of $0.8 billion, also represents a major capital investment.  The full-scale deployment of advanced metering infrastructure began in August 2012 and is planned to continue through 2019.  Consumers has spent $0.2 billion through 2012 on its Smart Energy program, and expects to spend an additional $0.3 billion, following a phased approach, from 2013 through 2017.

REGULATION

Regulatory matters are a key aspect of CMS Energy’s and Consumers’ businesses, particularly Consumers’ rate cases and regulatory proceedings before the MPSC.  Michigan Governor Rick Snyder has appointed Sally Talberg to serve on the three-member MPSC for a six-year term starting July 3, 2013 replacing Orjiakor Isiogu.  Talberg has served in various energy-related consulting, management, and public service roles during her career.  She will represent political independents on the Commission.  Her appointment is subject to the advice and consent of the Michigan Senate.  Other important regulatory events and developments are summarized below.

·      Electric Rate Cases:  Consumers filed a general electric rate case with the MPSC in September 2012, seeking an annual rate increase of $148 million, based on a 10.5 percent authorized return on equity.  In January 2013, Consumers supplemented its electric rate case application to reflect changes to its environmental compliance and generation outage plans, which reduced its requested annual rate increase to $145 million.

In March 2013, Consumers self-implemented an annual rate increase of $110 million out of its requested $145 million, subject to refund with interest.  Consumers’ self-implementation required no order by the MSPC, and no intervenors in Consumers’ electric rate case opposed Consumers’ self-implementation amount.  The MPSC approved a partial settlement agreement in May 2013, authorizing an annual rate increase of $89 million, based on a 10.3 percent authorized rate of return on equity.

In July 2013, Consumers filed a reconciliation of total revenues collected during self-implementation to those that would have been collected under final rates.  Consumers’ reconciliation indicated that no refund would be required.

·      Gas Rate Case:  In February 2013, Consumers filed an application with the MPSC seeking an annual rate increase of $49 million, based on a 10.5 percent authorized return on equity.  The filing requested authority to recover new investments in customer reliability, deliverability, safety, and system enhancements, and sought approval of several rate adjustment mechanisms.  Subsequent to this filing, Consumers’ projection of non-fuel costs decreased.  As a result, in June 2013, Consumers filed a petition with the MPSC to close the docket or, alternatively, to suspend and extend indefinitely the schedule in this case.  The MPSC approved Consumers’ petition to suspend and indefinitely extend the schedule.

·      Gas Revenue Decoupling Mechanism:  The gas revenue decoupling mechanism, authorized by the MPSC in its 2009 order in Consumers’ gas rate case and extended through April 2012, allowed Consumers to adjust future gas rates to the degree that actual average weather-adjusted

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sales per customer differed from the rate order.  In December 2012, the MPSC approved Consumers’ first reconciliation of the gas revenue decoupling mechanism, in which Consumers requested recovery of $16 million from customers for the period June 2010 through May 2011.  The MPSC authorized recovery of the full amount over a three-month period that began in February 2013.

Consumers filed its final reconciliation of the gas revenue decoupling mechanism in August 2012, requesting recovery of $17 million from customers for the period June 2011 through April 2012.  At June 30, 2013, Consumers had a $17 million regulatory asset recorded for gas revenue decoupling for that period.

The 2008 Energy Law limits alternative electric supply to ten percent of Consumers’ weather-adjusted retail sales of the preceding calendar year.  At June 30, 2013, Consumers’ electric deliveries under the ROA program were at the ten percent limit.  In February 2013, a bill was introduced to the Michigan Senate that, if enacted, would revise the 2008 Energy Law and allow customers on the ROA program waiting list to switch their service to an alternative electric supplier.  Presently, the proportion of Consumers’ electric deliveries under the ROA program and on the ROA waiting list is 25 percent.  The bill also proposes an increase in the cap of six percentage points per year from 2014 through 2016.  Consumers is unable to predict the outcome of this legislative proposal.

Environmental regulation is another area of importance for CMS Energy and Consumers, and they are monitoring numerous legislative and regulatory initiatives, including initiatives to regulate greenhouse gases, and related litigation.

In 2012, the EPA published its final MACT emission standards for electric generating units, based on Section 112 of the Clean Air Act, calling the final rule MATS.  Although numerous parties, including the State of Michigan, have sought to extend the deadline of MATS, it is expected to take effect in 2015.  Consumers has received from the MDEQ a one-year extension for MATS and the Michigan Mercury Rule for ten of its coal-fueled units, allowing them to run as presently configured until April 2016.  CMS Energy and Consumers are continuing to assess the impact and cost associated with these standards.

In June 2013, President Obama directed the EPA to issue a revised proposal addressing greenhouse gas emissions of new fossil-fuel-fired steam electric generating units by September 20, 2013, and to finalize the rule in a timely fashion.  The EPA was further directed to address existing, modified, and reconstructed fossil-fuel-fired steam electric generating units with proposed standards, regulations, or guidelines to be completed by June 1, 2014, and final standards, regulations, or guidelines to be completed by June 1, 2015.  Subsequent state implementation plans are due by June 30, 2016.  Consumers believes that its balanced energy initiative, its present carbon reduction target, and its emphasis on supply diversity will position it favorably to deal with the impact of carbon regulation, but cannot predict the nature or outcome of these proposals.  Consumers will continue to monitor regulatory activity regarding greenhouse gas emissions standards that may affect electric generating units.

FINANCIAL PERFORMANCE

For the six months ended June 30, 2013, CMS Energy’s net income available to common stockholders was $224 million, and diluted EPS were $0.83.  This compares with net income available to common stockholders of $167 million and diluted EPS of $0.62 for the six months ended June 30, 2012.  The main factors contributing to CMS Energy’s improved performance in 2013 were increased gas deliveries and the absence, in 2013, of the write-off of Consumers’ electric revenue decoupling mechanism regulatory asset in 2012.

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demand for natural gas occurs in the winter due to colder temperatures and the resulting use of natural gas as heating fuel.  A more detailed discussion of the factors affecting CMS Energy’s and Consumers’ performance can be found in the Results of Operations section that follows this Executive Overview.

CMS Energy and Consumers believe that economic conditions in Michigan are improving.  Consumers expects its electric sales to increase annually by about 0.5 to 1.0 percent on average through 2017, driven largely by the continued rise in industrial production.  Excluding the impacts of energy efficiency programs, Consumers expects its electric sales to increase by about 1.0 to 1.5 percent annually through 2017.  Consumers is projecting that its gas sales will remain stable through 2017.  This outlook reflects growth in gas demand offset by energy efficiency and conservation.

As Consumers seeks to continue to receive fair and timely regulatory treatment, delivering customer value will remain a key strategic priority.  To keep costs down for its utility customers, Consumers has set goals to achieve further annual productivity improvements.  Additionally, Consumers will strive to give priority to capital investments that increase customer value or lower costs.

Consumers expects to continue to have sufficient capacity to fund its investment-based growth plans.  CMS Energy also expects its sources of liquidity to remain sufficient to meet its cash requirements.  CMS Energy and Consumers will continue to monitor developments in the financial and credit markets, as well as government policy responses to those developments, for potential implications for their businesses and their future financial needs.

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RESULTS OF OPERATIONS

CMS ENERGY CONSOLIDATED RESULTS OF OPERATIONS

Presented in the following table are specific after-tax changes to net income available to common stockholders for 2013 versus 2012:

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CONSUMERS ELECTRIC UTILITY RESULTS OF OPERATIONS

Electric deliveries and rate increases:  For the three months ended June 30, 2013, electric delivery revenues decreased $2 million compared with 2012.  This decrease reflected $19 million of lower deliveries, due partially to milder weather in 2013, and a $2 million decrease in other revenues.  These decreases were offset largely by a $19 million benefit from a May 2013 rate increase that Consumers self-implemented in March 2013.  Deliveries to end-use customers, excluding deliveries to Consumers’ largest customer, which is on an economic development rate, were 8.6 billion kWh in 2013, a decrease of 0.1 billion kWh, or one percent, compared with 2012.

For the six months ended June 30, 2013, electric delivery revenues increased $78 million compared with 2012.  This increase reflected the absence, in 2013, of a $59 million charge to write off Consumers’ electric decoupling regulatory asset, and a $23 million benefit from a May 2013 rate increase that Consumers self-implemented in March 2013.  These increases were offset partially by a $4 million decrease in other revenues.  Deliveries to end-use customers, excluding deliveries to Consumers’ largest customer, which is on an economic development rate, were 17.3 billion kWh in 2013, an increase of 0.1 billion kWh, or one percent, compared with 2012.

Maintenance and other operating expenses:  For the three months ended June 30, 2013, maintenance and other operating expenses increased $17 million compared with 2012.  This increase reflected the absence, in 2013, of the authorized recovery of $14 million associated with Consumers’ cancelled coal-fueled plant and an $11 million increase in service restoration expenses.  These increases were offset partially by the absence, in 2013, of $8 million of voluntary separation programs expenses.

For the six months ended June 30, 2013, maintenance and other operating expenses increased $13 million compared with 2012.  This increase reflected the absence, in 2013, of the authorized recovery of $14 million associated with Consumers’ cancelled coal-fueled plant, and an $8 million increase in service restoration expenses.  These increases were offset partially by the absence, in 2013, of $8 million of voluntary separation program expenses, and a $1 million decrease in other operating expenses.

Depreciation and amortization:  For the three months ended June 30, 2013, depreciation and amortization expense increased $8 million compared with 2012, and for the six months ended June 30, 2013, depreciation and amortization expense increased $19 million compared with 2012.  These

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increases were due primarily to increased plant in service during 2013 and an increase in depreciation rates that took effect in June 2012.

Income taxes:  For the three months ended June 30, 2013, income taxes decreased $12 million compared with 2012, reflecting lower electric utility earnings for the three months ended June 30, 2013.

For the six months ended June 30, 2013, income taxes increased $15 million compared with 2012, reflecting higher electric utility earnings for the first six months of 2013.

CONSUMERS GAS UTILITY RESULTS OF OPERATIONS

Gas deliveries and rate increases:  For the three months ended June 30, 2013, gas delivery revenues increased $2 million compared with 2012.  This increase was due primarily to higher customer deliveries, offset partially by the absence of the gas revenue decoupling mechanism in 2013.  Deliveries to end-use customers were 47 bcf in 2013, an increase of 7 bcf, or 18 percent, compared with 2012.

For the six months ended June 30, 2013, gas delivery revenues increased $57 million compared with 2012.  This increase reflected $51 million of higher customer deliveries, due primarily to colder weather in 2013, offset partially by the absence of the gas revenue decoupling mechanism in 2013, and a $6 million benefit from a June 2012 rate increase that Consumers self-implemented in March 2012.  Deliveries to end-use customers were 179 bcf in 2013, an increase of 33 bcf, or 23 percent, compared with 2012.

Maintenance and other operating expenses:  For the three months ended June 30, 2013, maintenance and other operating expenses increased $6 million compared with 2012.  This increase was due to a $10 million increase in pipeline integrity and gas distribution operating expenses, offset partially by the absence, in 2013, of $4 million of voluntary separation program expenses.

For the six months ended June 30, 2013, maintenance and other operating expenses decreased $1 million compared with 2012.  This decrease was due to the absence, in 2013, of $4 million of voluntary separation program expenses, offset partially by a $3 million increase in gas distribution operating expenses.

Depreciation and amortization:  For the six months ended June 30, 2013, depreciation and amortization expense decreased $3 million compared with 2012, due primarily to decreased depreciation rates that took effect in January 2013.

Income taxes:  For the six months ended June 30, 2013, income taxes increased $23 million compared with 2012, due to higher gas utility earnings in 2013.

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ENTERPRISES RESULTS OF OPERATIONS

For the three months ended June 30, 2013, net income of the enterprises segment increased $2 million compared with 2012, due primarily to improved gross margins.

For the six months ended June 30, 2013, net income of the enterprises segment increased $1 million compared with 2012, due primarily to lower expenses, offset partially by the absence of a $2 million 2012 Michigan tax benefit.

CORPORATE INTEREST AND OTHER RESULTS OF OPERATIONS

For the six months ended June 30, 2013, corporate interest and other net expenses increased $1 million compared with 2012, due primarily to an increase in interest expense, reflecting increased borrowings.

DISCONTINUED OPERATIONS

For the three months ended June 30, 2013, the net loss from discontinued operations was less than $1 million.

For the six months ended June 30, 2013, the net loss from discontinued operations was less than $1 million, compared with income from discontinued operations of $7 million in 2012, reflecting the elimination of a liability related to a prior asset sale.

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CASH POSITION, INVESTING, AND FINANCING

At June 30, 2013, CMS Energy had $566 million of consolidated cash and cash equivalents, which included $29 million of restricted cash and cash equivalents.  At June 30, 2013, Consumers had $314 million of consolidated cash and cash equivalents, which included $28 million of restricted cash and cash equivalents.

OPERATING ACTIVITIES

Presented in the following table are specific components of net cash provided by operating activities for the six months ended June 30, 2013 and 2012:

1 Non-cash transactions comprise depreciation and amortization, changes in deferred income taxes, postretirement benefits expense, and other non-cash items.

2 Core working capital comprises accounts receivable and accrued revenues, inventories, and accounts payable.

For the six months ended June 30, 2013, net cash provided by operating activities at CMS Energy increased $152 million compared with 2012, and net cash provided by operating activities at Consumers increased $72 million compared with 2012.  The increases were due primarily to higher net income, net of non-cash transactions, the receipt of a $69 million renewable energy grant for Lake Winds® Energy Park, an increase in refunds to customers, and a larger reduction in working capital, reflecting higher usage of gas inventory.  These changes were offset partially by higher pension contributions.  At Consumers, these changes were also offset partially by an increase in tax payments to CMS Energy.

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INVESTING ACTIVITIES

Presented in the following table are specific components of net cash used in investing activities for the six months ended June 30, 2013 and 2012:

For the six months ended June 30, 2013, net cash used in investing activities at CMS Energy increased $6 million compared with 2012, and net cash used in investing activities at Consumers increased $12 million compared with 2012.  The increases were due primarily to a slight increase in capital expenditures under Consumers’ capital investment program.

FINANCING ACTIVITIES

Presented in the following table are specific components of net cash used in financing activities for the six months ended June 30, 2013 and 2012:

For the six months ended June 30, 2013, net cash used in financing activities at CMS Energy decreased $272 million compared with 2012 and net cash used in financing activities at Consumers decreased $152 million compared with 2012.  These changes were due primarily to a decrease in net debt retirements, offset partially by repayments by Consumers under its revolving accounts receivable sales program.

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RETIREMENT BENEFITS

Effective July 1, 2013, CMS Energy and Consumers approved a change to the Medicare drug program provided through their OPEB Plan from an employer-sponsored prescription drug plan with a retiree drug subsidy to an EGWP, to begin on January 1, 2015.  As a result of changes stemming from the Health Care Acts, the EGWP structure can result in reduced costs for employers, without impacting plan participants’ benefit coverage or costs.  Also effective July 1, 2013, CMS Energy and Consumers approved certain benefit changes to the OPEB Plan, to begin on January 1, 2016.  Accordingly, CMS Energy and Consumers performed a remeasurement of the OPEB Plan as of July 1, 2013.  In addition, with the plan remeasurement, the discount rate used to measure the OPEB liability was increased from 4.4 percent at December 31, 2012 to 5.1 percent at July 1, 2013.  Assumptions regarding the expected long-term rate of return on plan assets and the health-care cost trend rate did not change from December 31, 2012 levels.

As a result of these changes, CMS Energy’s (including Consumers’) OPEB liability decreased by $613 million and its OPEB regulatory asset decreased by $599 million as of July 1, 2013.  CMS Energy’s accumulated other comprehensive loss decreased by $14 million.  CMS Energy’s (including Consumers’) OPEB cost is expected to decrease by $46 million in 2013.  Consumers’ OPEB liability decreased by $599 million and its OPEB regulatory asset decreased by $599 million as of July 1, 2013.  Consumers’ OPEB cost is expected to decrease by $45 million in 2013.

The decrease in CMS Energy’s and Consumers’ OPEB liabilities was due primarily to the change in the discount rate used to measure the liabilities and other changes in actuarial assumptions, the benefit changes, and the change in the OPEB Plan’s Medicare drug program to the EGWP structure.  Presented in the following table are the components of the decrease in CMS Energy’s and Consumers’ OPEB liabilities at July 1, 2013.

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Presented in the following table are the most recent estimates of CMS Energy’s and Consumers’ pension cost, OPEB cost, and cash contributions through 2015.  These updated estimates incorporate the OPEB Plan changes that became effective July 1, 2013.