# Reference Data

Some of the data sent and received through the API uses codes to represent certain field values. See the set of codes below.

## Retirement Type Codes

Used for GET Certificate Holdings & POST Certificate Retirement.

| Retirement Type Description | Retirement Type Code |
|  --- | --- |
| Primary account retirement | GRN |
| Retired on behalf of Beneficial Owner | BBO |
| Retired on behalf of corporate | OTH |


## Retirement Reason Codes

Used for GET Certificate Holdings & POST Certificate Retirement.

| Retirement Type Code | Retirement Reason Description | Retirement Reason Code |
|  --- | --- | --- |
| GRN | Meet Corporate Renewable Energy Goals | 1 |
| GRN | Meet Carbon Neutrality Goals | 2 |
| GRN | Meet Overall Sustainability Goals | 3 |
| BBO | Meet Corporate Renewable Energy Goals | 4 |
| BBO | Meet Carbon Neutrality Goals | 5 |
| BBO | Meet Overall Sustainability Goals | 6 |
| OTH | Meet Corporate Renewable Energy Goals | 7 |
| OTH | Meet Carbon Neutrality Goals | 8 |
| OTH | Meet Overall Sustainability Goals | 9 |


## Certificate Status Codes

Used for GET Certificate Holdings.

| Certificate Status Code | Description |
|  --- | --- |
| PENDING | Part of a pending transfer, not transferable |
| ACTIVE | Active and transferable |
| RETIRED | Retired and not transferable |


## Retirement Certificate Type Codes

Used for GET Certificate Holdings & POST Certificate Retirement

| Retirement Certificate Type | Retirement Certificate Type Code |
|  --- | --- |
| Individual Detailed | SINGLE |
| Aggregated Summary | [Not yet available] |


## SubAccount Type Codes

Used for POST Create New Sub-Account

| SubAccount Type Name | SubAccount Type Code |
|  --- | --- |
| Active | ACT |
| Retirement | RET |


## Fuel Type Codes

Used for GET Certificate Holdings.

| Fuel Type Name | Fuel Type Code |
|  --- | --- |
| Biogas - Agricultural Methane | BAM |
| Biomass Combustion - Agricultural Products | BAP |
| Biomass Combustion - Agricultural Waste | BAW |
| Biomass Combustion - Animal Waste | BCA |
| Biogas - Animal Waste | BGA |
| Biogas - Wastewater Methane | BGW |
| Biogas - Liquid Biofuels | BLB |
| Biogas - Landfill Methane | BLF |
| Biomass Combustion - Liquid Biofuels | BML |
| Biomass - Animal Waste - Swine Waste, Solid or Gas | BA1 |
| Biomass - Animal Waste - Poultry Waste, Solid or Gas | BA2 |
| Biomass Combustion - Wood Products | BWP |
| Biomass Combustion - Wood Waste | BWW |
| Coal (used for Multi-Fuel Generators; will not create TIGRs) | CO1 |
| Diesel (used for Multi-Fuel Generators; will not create TIGRs) | DI1 |
| Fuel Cells using Hydrogen derived from Fossil Fuels | FC1 |
| Geothermal Energy | GE1 |
| Hydroelectric Water - Dam/Impoundment | H2O |
| Hydroelectric - Run-of-the-River | HRR |
| Hydroelectric - Tidal | HTI |
| Hydroelectric - Wave power | HWA |
| Fuel cells using Hydrogen derived from renewables | HYD |
| Jet Fuel (used for Multi-Fuel Generators; will not create TIGRs) | JET |
| Municipal solid waste | MS1 |
| Natural Gas (used for Multi-Fuel Generators; will not create TIGRs) | NG1 |
| Oil (used for Multi-Fuel Generators; will not create TIGRs) | OIL |
| Concentrated Solar Power | SCP |
| Solar Photovoltaics | SO1 |
| Solar Serving On-Site Load | SOL |
| Wind | WND |