Slide 1: Investor Meetings August 29, 2013
Exhibit 99.1 Investor August Cross Gas Combined WindsREnergy 29, Meetings 2013Cycle Plant Park Consumers Smart Energy Program
Slide 2: Forward-looking statements and non-GAAP information
This relevant from STATEMENTS 10-Qs. important to The comparable CMS adjusted regulatory able 2 update presentation to presentation time Energy estimate CMS legal basis. any factors to items GAAP time Energy’s provides of decisions. Management AND the the from also that is inmeasure impact made info
Slide 3: CMS Energy investment case: consistent EPS growth
CMS EPSa 11th $1.55 7% Consistent Ten- Constructive $1.26 $1.21 regulation $0.96 $1.08 $0.90 Operating $0.84 2003 aA $ .b 3 .1.25 djusted . . year .2004 Business Results 5%EPS Fair Utility investment $0.81 excluding has of visibility Needed allowed cash Self-funded and financial 2005 Safe, top regul
Slide 4: 2013 adjusted EPS guidance and first half results
CMS 2012 Adjusted First Gas +7¢ Electric Guidance Summer $1.52 Winter Sales Health .Financing -13¢ 4 . . . case Hot delivering Half 2013 4¢ Manages tocare Better Weather $1.55 deferred EPS Gas Second &2other Than Adjusted Weather $1.55 its theHalf 3Work 1high Plan +13¢ Net Warm Reliability EPS side
Slide 5: Michigan's new constructive regulation and commissioners
Michigan’s New Previous Provided Michigan Environmental Public BS Education MPA .Sally 5 . . -. strong Michigan Commissioner -Talberg Sector Utility University Experience support research Public Department Constructive law(I) Consultants Commission State Quality on Greg Service for of for the Commis
Slide 6: Michigan energy law and renewable and efficiency goals
2008 Progress Energy Goal Gas .Renewable 6 . . . 3.3% .Electric Law established Efficiency Ahead 3.85% . Energy .. .4.1% . ofMichigan’s 2008 Plan 8% 5.5%10% 2015 energy priorities.
Slide 7: Regulatory lag and authorized ROE versus peers
Regulatory Months 12 10 10.6 Small 8 F 6 Michigan 1 4 2008 Peers .Source: 7 .00.4 ile-and-implement .2Peers 10.8% . provided Energy Law 2009 Michigan SNL (Months Consumers .2010 Lag .. RRA, .fair . Authorized Premium 2011 toand 2013 Order) 6 months 2012 timely YTD, Electric (CMS ROE 2013 regulation.
Slide 8: Cost reductions plan
Trend IPercent 0 -21% Prior Reductions Accelerated -9% New 2006 -25% -15% .Lines 8nflation . . . .Plan Plan 2007 Cost smoothed accelerated; ofChange O&M 2008 CostCost 25% for 2009 Reductions funding illustrative Savings 2010investment 2011 .-6% .purposes . .2012 and 2013reducing 2014 2015 risk.
Slide 9: Cost reductions fund reinvestment: electric
Strong Average 7% Western 2% SAP Utilities -2% Future Reinvested Classic -6% Productivity Benefit Consumers 2006-2012 .Annual 9 . . .Amount Inflation -1% holds 40(est. Customer 7Average plans Consumers coal O&M 0.5% mothballed down 2012 Smart annual Avg. 10 2% $250 30Annual 2012 2013E Workforce rate
Slide 10: Cost reductions fund reinvestment: gas
Strong Average 7% 2% Avg Utilities Consumers -2% Retiree Reinvested Tax -6% Cross .2006-2012 10 . . .Annual Benefit benefits Additional .0.5% has -10% Winds® Customer health Consumers O&M been 2012 Avg. plans -4% (COR) enhanced care (PTC) Annual cost Future 2013E Focus 30$50 70 Smart controls 10Chan
Slide 11: Tax benefits help avoid rate cases
New Gas $100 $49 Cross Tax/Other Benefits 2013 .a$0 11 .Until . .Tax Rate fund Cost Benefits 2014 WindsR 2015 Case elimination Savings 2014 test Avoided year . . .of . anext Electric gas and Rateelectric Case Avoided cases! a
Slide 12: Rate case timeline and avoided cases
Rate 2013 Gas CON Tax Case File Base .aEPS 12 .Includes . .CON Plant rate annual 5% underway Case Tax Ratesa 2014 filed annual -Accounting New 7% Elimination surcharges July 2015 Avoid No 5%.Michigan 12 case Increase 2016 -September Energy 7% On Request ELECTRIC .5% .Track <. Policy .Inflation - 7%
Slide 13: Enhanced investment strategy and customer benefits
Enhanced Prior Rate ROE Lowers Investment Helps (“Free” O&M EPS, Sustains 13 case OCF New Subject costs 700 filings Near-Term &(2013-17 (2013-17 MW dividend to review Annual GCC))Strategy ) $7 growth -1% 10.3% Avoid billion -2%5% into .until . $7 . -.2015 7% billion 20155% Risk (test Customers - 7%
Slide 14: Michigan economy gross domestic product performance
Michigan Gross WA MT 8.1 8.2 SD OR 13.8 2.1 MI (3.5) 11.0 7.4 NV UT 2.9 12.3 4.3 5.0 0.7 GA TX HI FL U.S. .Lowest 14 . .AK NY WY 31.0 ME 7.9 KS KY 8.4 .MS 11% CO LA WI 7.6 RI ND 5th 6.6 VT 7.3 among Total NE Domestic 5.9 3.6 IL NC 2.4 5.0 8.2 3.2 VA 2.7 quintile 5.9 5.9 Best 1.0 NH 6.6 Economy PA =I
Slide 15: Michigan economy growing: employment and investment
Central Employment 2013 Thousands 980 Investment Sep $3 50,000 955 JR 930 Alticor Dieomatic 2003 .Source: 15 . .Billion Automation .-09 Up economy Announcements 2005 ,Magna West 7% http://www.michiganadvantage.org/Projects/ 229 jobs 22K Dart 2007 Statewide $3.3B since Projects Michigan New growing U
Slide 16: Ten-year $15 billion capital plan
Ten-Year Clean $3 Environmental Renewable .Gas 16 . .Billion . conversions inPower customer Capital $2 energy Capacity Billion NewPipeline projects Investment Ludington gas $3.5 Reliability generation (none replacements Billion Plan Pumped “bet $4 Infrastructure . .Consumers .the Billion . Storage E
Slide 17: Capital investment: $7 billion by 2017
Capital 2013 Faster < Pole .Customer 17 . $7 . . at replacements Billion –Smart sustainable 2017 Investment base Pipe Plan Energy rates replacements Opportunity Billion and Plan <2% $10affordable . .>4% More . . Level gas pace, generation in low-risk, “bite size size” projects.
Slide 18: Capacity needed to meet reserve requirements
Capacity Installed MW 8,500 9,500 7,500 2013 .4,500 18 . . . to New 2014 Market 6,500 meet Capacity Needed Gas 2015 5,500 reserve Purchases Plant 2016 . Excl . .Peak requirements . 2017 Classic Demand 20187 Classic . with Reserve 7 Marging 10,500,
Slide 19: New gas plant CON filed
New CON Expected within Reliability July Capacity customers needed Filed support Investment Award jobs .benefits 19 . . . and 25 progress Gas 7/12 filed nine Major to future Investment economic Certificate Plant decision of Approval July to in months be Full continues Project Necessity CON 12th Air
Slide 20: Near-Term Catalysts
Near-Term Catalysts 1. 2. .by 20 . .Rate Constructive early . progress cases April Progress Catalysts Avoided continues, 2014 regulation 6.. electric .Capital . more . Newinvestment and opportunities commissioner gas rate10-year cases ahead. appointed, tovisibility, 2015 test Sally $15 year Talberg
Slide 21: Key takeaways: EPS growth and dividend yield
Key EPS 7% $1.70 5% +8% Gross up +4%4 +12% +11% +7% Low Needed Actual .a2003 21 .Adjusted .$0.1 .5% Takeaways adistinguish rates Growth Dividend 2004 Yield operating Growth EPS -7% billion investment EPS 2005 =~4% real 7% 8% per growth (non-GAAP) .cash CMS 2006 growth .Cost Transparent Ten-year .yea
Slide 22: Appendix
APPENDIX
Slide 23: Ludington pumped storage upgrade
Ludington Increase Operate $800 – .Consumers 23 .$600 $200 . . underway million million for capacity efficiency Upgrade Energy 30total years upgrade maintenance . byinvestment by share to15% before 5% 2,200 $400 next MW over million major . 10 . . .years overhaul
Slide 24: Michigan renewable energy and capacity timeline
Michigan Renewable Electric May-Jun Energy Draft Sep Additional feedback Length Governor Source: recommendations .Future 24 . . .-Nov toreports, improve of Topics efficiency michigan choice Analyze makes Preparing cases, areas energy public “Appendix on better policy gdata Seven 2008 .gov/energy . .
Slide 25: GAAP Reconciliation
GAAP RECONCILIATION
Slide 26: Earnings Per Share By Year GAAP Reconciliation
CMS ENERGY CORPORATION Earnings Per Share By Year GAAP Reconciliation (Unaudited) 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Reported earnings (loss) per share - GAAP ($ 0.30) $ 0.64 ($ 0.44) ($ 0.41) ($ 1.02) $ 1.20 $ 0.91 $ 1.28 $ 1.58 $ 1.42 After-tax items: Electric and gas utility 0.21 (