EXHIBIT 10(b) MONTHLY SERVICER'S CERTIFICATE CONSUMERS FUNDING LLC $468,592,000 SECURITIZATION BONDS, SERIES 2000-1 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: February 2003 CURRENT BILLING MONTH 2/4/2003 - 3/4/2003 COLLECTION CURVE 100% STANDARD BILLING FOR PRIOR BILLING MONTH Residential Total Billed $162,579,572 Residential SECURITIZATION CHARGE (SC) Billed $1,648,517 1.014% Commercial Total Billed $85,363,714 Commercial SECURITIZATION CHARGE (SC) Billed $1,368,549 1.603% Industrial Total Billed $48,186,801 Industrial SECURITIZATION CHARGE (SC) Billed $1,283,715 2.664% YTD NET WRITE-OFFS AS A % OF BILLED REVENUE Non-Residential Customer Net Write-offs 0.160% Residential Customer Net Write-offs 0.500% Total Net Write-offs 0.310% AGGREGATE SC COLLECTIONS TOTAL SC REMITTED FOR BILLING MONTH Residential Class SC Collected $1,569,334 Commercial Class SC Collected $1,358,169 Industrial Class SC Collected $1,354,944 Total SC Collected $4,282,447 Aggregate SC Remittances for January 2003 BILLING MONTH $3,975,097 Aggregate SC Remittances for February 2003 BILLING MONTH $4,282,447 Aggregate SC Remittances for March 2003 BILLING MONTH $0 TOTAL CURRENT SC REMITTANCES $8,257,544 Page 1 of 3 CURRENT BILLING MONTH 2/4/2003 - 3/4/2003 COLLECTION CURVE 100% CALCULATED SC COLLECTED AMOUNT RESIDENTIAL A-1 Residential SC Collected $1,494,292 A-3 Residential T.O.D. SC Collected $6,390 A-4 Alternate Residence SC Collected $36,171 A-5 Residential Farm/Life Support SC Collected $32,481 TOTAL RESIDENTIAL SC COLLECTED $1,569,334 COMMERCIAL B-1 General Primary (041) SC Collected $22,147 B-General Secondary (010) SC Collected $262,731 C-General Secondary (011) SC Collected $507,979 D-General Primary (018) SC Collected $309,066 F-Primary High Load Factor (032) SC Collected $44,863 GH-General Service Heating (013) SC Collected $9,063 H- Water Heating Service (014) SC Collected $666 L-1 General Energy-Only Street Lighting SC Collected $3,038 L-2 General Service (Cust Owned) St Light SC Collected $3,181 L-3 General Service (Co Owned) St Light SC Collected $16,194 L-4 General Service Outdoor Lighting Commercial SC Collected $2,191 PS-1 General Secondary Public Pumping SC Collected $7,666 PS-2 General Primary Public Pumping SC Collected $8,957 PS-3 General Optional Primary Public Pumping SC Collected $46,669 R-1 General Secondary Resale SC Collected $30 R-2 General Secondary Resale SC Collected $1,300 R-3 General Primary Resale SC Collected $35,134 ROA-P Retail Open Access Primary (110) SC Collected $49,550 ROA-S Retail Open Access Secondary Com SC Collected $11,576 SC - Special Contract Commercial SC Collected $1,656 SPEC Grand Rapids Special Contract SC Collected $3,604 UR-General Unmetered SC Collected $10,908 TOTAL COMMERCIAL SC COLLECTED $1,358,169 INDUSTRIAL B-1 General Primary (042) SC Collected $16,163 B-General Secondary (020) SC Collected $34,439 C- General Secondary (021) SC Collected $71,451 CG-Cogeneration/Small Power Production Purchase SC Collected $2,887 D-General Primary (028) SC Collected $537,060 F-Primary High Load Factor (033) SC Collected $66,859 GH-General Service Heating (023) SC Collected $74 GMD General Motors SC Collected $65,041 GMF General Motors SC Collected $110,705 GMF-1 General Motors SC Collected $13,151 GMJ-1 General Motors SC Collected $7,460 Page 2 of 3 CURRENT BILLING MONTH 2/4/2003 - 3/4/2003 COLLECTION CURVE 100% H- Water Heating Service (024) SC Collected $2 I-General Primary Interruptible (034) SC Collected $2,459 J-1General Alternative Electric Metal Melting SC Collected $32,081 J-General Primary Electric Furnace (037) SC Collected $7,396 L-4 General Service Outdoor Lighting Industrial SC Collected $130 ROA-P Retail Open Access Primary (111) SC Collected $206,671 ROA-S Retail Open Access Secondary Ind SC Collected $1,523 SC - Special Contract Industrial SC Collected $179,392 TOTAL INDUSTRIAL SC COLLECTED $1,354,944 TOTAL SC COLLECTED $4,282,447 Executed as of this 19th day of March 2003. ------------ ------------ CONSUMERS ENERGY COMPANY AS SERVICER /s/ Glenn P. Barba ------------------------------ Glenn Barba, Vice President, Controller and Chief Accounting Officer CC: Consumers Funding LLC Suite M-1079 212 W. Michigan Ave Jackson, Mi 49201 Page 3 of 3