EXHIBIT 10(b) MONTHLY SERVICER'S CERTIFICATE CONSUMERS FUNDING LLC $468,592,000 SECURITIZATION BONDS, SERIES 2001-1 Pursuant to Section 3.05 of the Servicing Agreement dated as of November 8, 2001 (the "Consumers Servicing Agreement") between Consumers Energy Company, as Servicer and Consumers Funding LLC, as Issuer, the Servicer does hereby certify as follows: Capitalized terms used in the Monthly Servicer's Certificate (the "Monthly Certificate") have their respective meanings as set forth in the Servicing Agreement. References herein to certain sections and subsections are references to the respective sections of the Servicing Agreement. Current BILLING MONTH: May 2003 CURRENT BILLING MONTH 5/5/2003 - 6/3/2003 COLLECTION CURVE 100% STANDARD BILLING FOR PRIOR BILLING MONTH Residential Total Billed $119,154,903 Residential SECURITIZATION CHARGE (SC) Billed $1,226,672 1.029% Commercial Total Billed $76,576,776 Commercial SECURITIZATION CHARGE (SC) Billed $1,261,668 1.648% Industrial Total Billed $47,458,121 Industrial SECURITIZATION CHARGE (SC) Billed $1,328,364 2.799% YTD NET WRITE-OFFS AS A % OF BILLED REVENUE Non-Residential Customer Net Write-offs 0.170% Residential Customer Net Write-offs 0.410% Total Net Write-offs 0.270% AGGREGATE SC COLLECTIONS TOTAL SC REMITTED FOR BILLING MONTH Residential Class SC Collected $1,196,733 Commercial Class SC Collected $1,200,223 Industrial Class SC Collected $1,342,795 Total SC Collected $3,739,751 Aggregate SC Remittances for April 2003 BILLING MONTH $4,043,602 Aggregate SC Remittances for May 2003 BILLING MONTH $3,739,751 Aggregate SC Remittances for June 2003 BILLING MONTH $0 TOTAL CURRENT SC REMITTANCES $7,783,353 Page 1 of 3 CURRENT BILLING MONTH 5/5/2003 - 6/3/2003 COLLECTION CURVE 100% CALCULATED SC COLLECTED AMOUNT ------------------------------ RESIDENTIAL ----------- A-1 Residential SC Collected $1,138,144 A-3 Residential T.O.D. SC Collected $4,813 A-4 Alternate Residence SC Collected $27,339 A-5 Residential Farm/Life Support SC Collected $26,437 TOTAL RESIDENTIAL SC COLLECTED $1,196,733 COMMERCIAL B-1 General Primary (041) SC Collected $18,452 B- General Secondary (010) SC Collected $218,068 C- General Secondary (011) SC Collected $460,506 D- General Primary (18) SC Collected $260,318 F- Primary High Load Factor (032) SC Collected $40,267 GH- General Service Heating (013) SC Collected $5,255 H- Water Heating Service (014) SC Collected $606 L-1 General Energy-Only Street Lighting SC Collected $1,949 L-2 General Service (Cust Owned) St Light SC Collected $2,081 L-3 General Service (Co Owned) St Light SC Collected $10,732 L-4 General Service Outdoor Lighting Commercial SC Collected $1,508 PS-1 General Secondary Public Pumping SC Collected $6,748 PS-2 General Primary Public Pumping SC Collected $7,453 PS-3 General Optional Primary Public Pumping SC Collected $39,034 R-1 General Secondary Resale SC Collected $47 R-2 General Secondary Resale SC Collected $904 R-3 General Primary Resale SC Collected $28,750 ROA-P Retail Open Access Primary (110) SC Collected $72,904 ROA-S Retail Open Access Secondary Com SC Collected $11,092 SC - Special Contract Commercial SC Collected $1,929 SPEC Grand Rapids Special Contract SC Collected $2,544 UR- General Unmetered SC Collected $9,076 TOTAL COMMERCIAL SC COLLECTED $1,200,223 INDUSTRIAL B-1 General Primary (042) SC Collected $14,574 B- General Secondary (020) SC Collected $33,155 C- General Secondary (021) SC Collected $63,929 CG- Cogeneration/Small Power Production Purchase SC Collected $2,609 D- General Primary (028) SC Collected $545,085 F- Primary High Load Factor (033) SC Collected $57,300 GH- General Service Heating (023) SC Collected $56 GMD General Motors SC Collected $55,620 GMF General Motors SC Collected $125,437 GMF-1 General Motors SC Collected $14,717 GMJ-1 General Motors SC Collected $10,447 Page 2 of 3 CURRENT BILLING MONTH 5/5/2003 - 6/3/2003 COLLECTION CURVE 100% H- Water Heating Service (024) SC Collected $0 I- General Primary Interruptible (034) SC Collected $390 J-1 General Alternative Electric Metal Melting SC Collected $54,190 J- General Primary Electric Furnace (037) SC Collected $3,857 L-4 General Service Outdoor Lighting Industrial SC Collected $87 ROA-P Retail Open Access Primary (111) SC Collected $202,439 ROA-S Retail Open Access Secondary Ind SC Collected $1,231 SC - Special Contract Industrial SC Collected $157,672 TOTAL INDUSTRIAL SC COLLECTED $1,342,795 TOTAL SC COLLECTED $3,739,751 Executed as of this 19th day of June 2003. CONSUMERS ENERGY COMPANY AS SERVICER --------------------------------------- Glenn Barba, Vice President, Controller and Chief Accounting Officer CC: Consumers Funding LLC One Energy Plaza Jackson, Mi 49201 Page 3 of 3