> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mangrovesystems.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Mass Balance Accounting
> Track material flows and their associated MRV calculations across various stages of your project.
Mass balance accounting in Mangrove enables projects to track material flows—such as feedstocks, masses processed, masses produced, or sequestrations — throughout various stages of production. This allows project developers to:
* Get a clear, unified view of material flows across the entire project.
* Maintain traceable records of every batch.
* Calculate, and carry forward, the carbon profile of individual batches at different production stages.
* Support auditing, and reporting needs with accurate, transparent data.
Each project can define multiple mass accounts to track the outputs at different stages. These mass accounts serve as ongoing ledgers that record the accumulation and usage of material at that stage. Each account can also be thought of as representing a source, stock, or sink in the process.
```mermaid theme={null}
graph LR
A1[Mass Account
stage] --> B[Mass Account
stage]
A2[Mass Account
stage] --> B
B --> C[Mass Account
stage]
```
Mass balance accounts need to be configured by a member of the Mangrove team - please reach out to get accounts set up.
#### Examples of accounts:
```mermaid theme={null}
graph LR
A[Biomass Received
capture stage] --> B[Biochar Produced
production stage]
B --> C[Biochar Delivered and Applied
sequestration stage]
```
```mermaid theme={null}
graph LR
A[CO2 Captured
capture stage] --> B1[CO2 Sequestered
sequestration stage]
A --> B2[CO2 Utilized
utilization stage]
A --> B3[CO2 Loss
loss stage]
```
```mermaid theme={null}
graph LR
A[Dairy manure in
feedstock stage] --> B[Biogas produced
production stage]
B --> C[Biomethane upgraded
production stage]
C --> D1[Biomethane injected
transmission stage]
C --> D2[Biomethane loss
loss stage]
```