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Service fee calculation example

Our fee structure rewards scale and accommodates different levels of audit complexity. Pricing remains simple and accessible: no audit costs, no separate trading fee, and a fixed fee per unit at first transfer.

example

Calculation Example

1. One facility, one batch reported

How to calculate?

  • Determine Base Cost: Use the reported output volume to find the base cost per CORC from the table above.
  • Apply Complexity Premiums: Adjust the base cost based on the methodology used and any additional SDG claims to get the fee per CORC. 
  • Calculate Total Cost: Multiply the fee per CORC with the number of CORCs reported.  

Example Calculation: 

  • Per CORC cost adjusts to € 84 000 / 9 900 = € 8.48 per CORC. 
  • Suppose a supplier reports 10 001 CORCs. Base cost is € 7.50 per CORC (from the Service Fee Table)
  • If using Enhanced Rock Weathering methodology, add 12% premium: € 7.50 * 1.12 = € 8.40 per CORC. 
  • Auditor verifies 9 900 CORCs: Total cost remains € 84 008.40€. 
Example 1: Reporting 10 001 CORCs
Reported volume10 001
Cost tier 5. € 7.50 per CORC
Verified by auditor9 900
MethodologyEnhanced Rock Weathering
Premium fee: 12%
Extra SDGs0
Premium fee: 0%
Premium altogether12%
Premium fee: 0%
Total cost€ 84 008.40
reported volume x cost tier 5 x premium fee
Cost allocated per issued CORC€ 8.49
total cost / verified volume

2. One facility, three batches reported in the first year

Second calculation example examines the situation where the supplier wishes to make an early issuance to make sure the process is auditable and / or needs to make the first delivery of CORCs early. For the sake of simplicity, we assume each reported volume matches the verified volume in Example 2. Example 2.1 assumes Batch 2 has lower verified volume than reported volume.

In terms of absolute cost, it makes sense to report credits in larger volumes in the first year, but the difference is not great if the supplier needs to get some cash flow earlier or wants to demonstrate the delivery capability to investors or other stakeholders.

Example 2: Reporting 21 100 CORCs at once
Reported volume21 100
Cost tier 6. € 7.00 per CORC
Cumulative volume21 100
Cost tier 6. € 7.00 per CORC
Verified by auditor21 100
Cost tier 6
Cost of batch€ 147 700
reported volume x cost tier 6
Cost allocated per issued CORC€ 7.00
Example 2.1: Reporting 21 100 CORCs in 3 batches, with one batch below minimum CORC threshold.
BatchBatch 1Batch 2Batch 3
Reported volume5006 00014 600
Cumulative volume500
Cost Tier 1. Flat Fee
6 500
Cost Tier 4. € 7.75 per CORC
21 100
Cost Tier 6. € 7.00 per CORC
Verified by auditor5005 00014 600
Cost of batch€ 12 000
Flat Fee (Cost Tier 1)
€ 46 500
reported volume x cost tier 4
€ 102 200
reported volume x Cost Tier 6
Cost allocated per issued CORC€ 9.30
cost of batch/verified volume
€ 7.00
cost of batch/verified volume
Total cost€ 160 700

3. Three facilities

Third example examines the situation where a project developer has three projects, each from different methodologies.

Example 3: Pooling of projects across methodologies (assuming that reported volume = verified volume)
FacilityFacility 1Facility 2Facility 3
Reported volume5 80020 00025 000
Cumulative volume50 80050 80050 800
MethodologyBiochar
Premium fee: 0%
Enhanced Rock Weathering
Premium fee: 12%
Carbonated Materials
Premium fee: 6%
Extra SDGs1
Premium fee: 2,5%
1
Premium fee: 2,5%
0
Premium fee: 0%
Premium altogether2.5%14.5%6%
Cost of facility€ 35 670
reported volume x cost tier 9 x premiums fee
€ 137 400
reported volume x cost tier 9 x premiums fee
€ 159 000
reported volume x cost tier 9 x premiums fee
Cost allocated per issued CORC€ 6.15
cost of facility / verified volume
€ 6.87
cost of facility / verified volume
€ 6.36
cost of facility / verified volume
Pooling admin fee (annual)€ 4 000
Total cost€ 336 070
cost of facility 1+2+3

The Puro.earth service fee calculator is an interactive tool to help you visualize your service fee pricing based on the volume of estimated annual output of CORCs and the price level of CORCs.

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