EXHIBIT 4. Choice Participation in Michigan, Consumers Energy and DTE Energy (Megawatts Served) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 2 0 0 2 2 0 0 3 2 0 0 4 2 0 0 5 2 0 0 6 2 0 0 7 2 0 0 8 2 0 0 9 2 0 1 0 2 0 1 1 2 0 1 2 2 0 1 3 2 0 1 4 2 0 1 5 2 0 1 6 2 0 1 7 Megawatts Served $0 $1 $2 $3 $4 $5 $6 $7 $8 $9 $10 $0 $10 $20 $30 $40 $50 $60 $70 $80 2 0 0 6 2 0 0 7 2 0 0 8 2 0 0 9 2 0 1 0 2 0 1 1 2 0 1 2 2 0 1 3 2 0 1 4 2 0 1 5 2 0 1 6 2 0 1 7 Dollars/Mcf Dollars/MWh Average Annual Wholesale Electric Price Average Annual Natural Gas Price, Michigan EXHIBIT 5. Average Annual Wholesale Electric Prices, Indiana Hub and Average Annual Electric Power Sector Natural Gas Prices, Michigan