Under the Renewable Electricity Guarantee of Origin (REGO), REGO certificates track and verify renewable electricity generated in Australia.
REGO certificates are digital documents that we issue for each megawatt-hour (MWh) of renewable electricity generated or dispatched. They can be transferred or retired to demonstrate the use of renewable electricity.
REGO certificates show key details like:
- when and where renewable electricity was made
- facility details, such as name, ID code and type
- the renewable energy source
- if the certificate was retired or transferred
- attributes relating to First Nations or other characteristics of the facility.
A full list of certificate details is available in the Future Made in Australia (Guarantee of Origin) Rules 2025 and the Future Made in Australia (Guarantee of Origin) Act 2024.
You will be able to view all REGO certificates on the Guarantee of Origin Register.
Benefits of REGO certificates
With REGO certificates, you can:
- make claims about the use of certified renewable electricity
- sell or transfer certificates
- create REGO storage certificates
- create Product Guarantee of Origin (PGO) certificates.
Create certificates
You will be able to create REGO certificates in Online Services. When you apply, you’ll need to pay the certificate creation fees before we assess your claim.
Before you create certificates, you’ll need to:
- have an Online Services account
- make sure you’re the eligible registered person for a registered facility
- collect your facility meter and generation data
- have documentation required to meet conditions on the facility or to evidence additional attributes
- consider if you want to create certificates for extra electricity generated over a calendar month (residual amount).
Your facility’s baseline will automatically apply and determines which certificates are below baseline.
Energy storage systems
If you own an energy storage system, you can create certificates using either:
- REGO certificates or large-scale generation certificates (LGCs) that you surrender or retire (these represent an input of renewable electricity to the storage system)
- electricity that is directly supplied from an eligible renewable electricity generation facility.
After you submit your application, we’ll assess it and either register the certificates, refuse the application, or ask for more information.
If your certificates are registered, the certificates details are published on the public Guarantee of Origin Register.
Incorrect or invalid certificates
If your supporting generation data or documents show that any certificates created are invalid or incorrect, one of our assessors will contact you to guide you through the next steps. We may:
- ask you to correct the number of certificates
- advise that the certificates can’t be registered.
If you repeatedly submit incorrect or invalid certificates, you’ll be identified as high risk and undergo a compliance review. To learn more about how we manage compliance, read our compliance approach.
You can’t use the same electricity generation to create certificates in multiple schemes
This means you can’t use the same generation to create REGOs, LGCs or international renewable energy certificates (I-RECs) under the GO Act and GO Rules.
How certificates are calculated
To calculate how many certificates you can create, a measurement standard will be determined when you register your facility. The standard will consider the facility’s metering setup to determine eligibility.
Calculate certificates for electricity generation systems
The eligible amount formula used to calculate how many certificates you can create for electricity generation systems is:
$|\mathsf{EA_t = [(TLEG_t - FSL_t) \times (1 - AF)] - TL_t - DSEE_t}|$
All electricity amounts in the definitions are in MWh.
All calculations are in accordance with section 48 of the GO Rules.
EAt
The eligible amount in the time period, t.
TLEGt
The total amount of electricity generated by the electricity generation system in the time period, t.
FSLt
The amount of electricity generated by the facility in the time period, t either:
- using anything other than an eligible renewable energy source in a way that’s ecologically sustainable
- for a purpose other than to meet the demand for electricity.
AF
The auxiliary factor, which is calculated as:
$|\mathsf{AF = {AUX \over TG}}|$
This factor is calculated from AUX (auxiliary loss) and TG (the total amount of electricity generated). These values are from the time period, t, or from the month, whichever is larger.
TLt
The transmission losses for the time period, t. If the electricity generation system doesn’t have an MLF (marginal loss factor) determined by the Australian Energy Market Operator, then the transmission losses are nil. Otherwise, they’re calculated as:
$|\mathsf{TL_t = DLEG_t \times (1 - {FSL_t \over TLEG_t}) \times (1 - MLF)}|$
This calculation includes DLEGt (the amount of electricity dispatched to the network for the time period, t).
DSEEt
The directly supplied eligible electricity for the time period, t, which is calculated as:
$|\mathsf{DSEE_t = DSE_t \times (1 - {FSL_t \over TLEG_t})}|$
This calculation includes DSEt (the total amount of electricity supplied to a registered energy storage facility through a direct supply relationship).
t
The time period determined. It will either be an hour or another time period the facility chose when registering.
Calculate certificates for energy storage systems
The eligible amount formula used to calculate how many certificates you can create for energy storage systems is:
$|\mathsf{EA_t = MAXEA_t \times ({Demonstrated\,Renewable\,Electricity_t \over Required\,Renewable\,Electricity_t})}|$
This equation is based on the calculation for the maximum eligible amount:
$|\mathsf{MAXEA_t = [TLED_t \times (1 - AF)] - TL_t}|$
All electricity amounts in the definitions are in MWh.
All calculations are in accordance with section 49 of the GO Rules.
EAt
The eligible amount in the time period, t.
MAXEAt
The maximum eligible amount in the time period, t.
Demonstrated Renewable Electricityt
The demonstrated amount of renewable electricity for the time period, t calculated as:
$|\mathsf{Demonstrated\,Renewable\,Electricity_t = Surrendered\,LGCs_t + Retired\,REGOs_t + DSEE_t}|$
This calculation includes DSEEt (the directly supplied eligible electricity for the time period t) allocated from the directly supplied electricity in a time period s, DSEEs, calculated in accordance with:
$|\mathsf{DSEE_s = DSE_s × (1 - {FSL_s \over TG_s})}|$
DSEs
The electricity generated by an electricity generation system with which the storage system has a direct supply relationship, supplied in the duration of time s to the storage system.
FSLs
The amount of electricity in megawatt hours generated by an electricity generation system with which the storage system has a direct supply relationship in the duration of time s, using anything other than an ecologically sustainable eligible renewable energy source, and that is used to meet electricity demand.
TGs
The total amount of electricity in megawatt hours generated by the electricity generation system with which the storage system has a direct supply relationship in the duration of time s.
Required Renewable Electricityt
The total amount of electricity that must be renewable for the time period, t calculated as:
$|\mathsf{Required\,Renewable\,Electricity_t = {TLED_t \over EF}}|$
This calculation includes TLEDt (the total amount of electricity dispatched by the energy storage system for the time period, t) and EF which is calculated as:
$|\mathsf{EF = {ElectricityOut \over (ElectricityIn\,-\,EX\,-\,AUX)}}|$
This calculation includes ElectricityOut (the electricity exported by the system), ElectricityIn (the electricity imported to the system), EX (electricity used for network support and control ancillary services) and AUX (the auxiliary loss for the system).
These values are from the time period, t or from the calendar month, whichever is larger.
All electricity amounts in the definitions are in MWh.
All calculations are in accordance with section 50 of the GO Rules.
MAXEAt
The maximum eligible amount in the time period, t.
TLEDt
The total amount of electricity dispatched by the energy storage system in the time period, t.
AF
The auxiliary factor calculated as:
$|\mathsf{AF = {AUX \over TD}}|$
This factor is calculated from AUX (auxiliary loss) and TD (the total amount of electricity dispatched). These values are from the time period, t or from the month, whichever is larger.
TLt
The transmission losses for the time period t. If the electricity generation system does not have an MLF (marginal loss factor) determined by Australian Energy Market Operator, then the transmission losses are nil. Otherwise, they are calculated as:
$|\mathsf{TL_t = DLED_t \times (1 - MLF)}|$
This calculation includes DLEDt (the amount of electricity dispatched to the network for the time period, t).
t
The time period determined. It will be an hour or another time period the facility chose when registering.
Transfer and retire certificates
The ability to transfer and retire certificates is not available yet. We’ll let participants know when this functionality is available.