Energy Action helps Australian businesses understand energy procurement, renewable energy contracting and the commercial considerations surrounding LGCs and renewable electricity. By working with experienced energy specialists, organisations can assess available options, manage procurement risks and develop an energy strategy suited to their financial and sustainability objectives. Visit Energy Action to explore how professional energy procurement support can help your business make more informed energy decisions.
Estimated Reading Time: 10 minutes
Australian organisations increasingly want clearer evidence that their electricity strategy supports renewable energy. As a result, understanding renewable energy certificates business requirements and options has become an important part of energy procurement, sustainability planning and emissions management.
Large-scale Generation Certificates, commonly known as LGCs, play an important role in Australia's renewable energy market. Renewable energy generators create eligible certificates based on the electricity they produce, while certificates can subsequently be traded separately from the physical electricity.
For businesses, however, understanding LGCs requires more than knowing their basic definition. Organisations should consider how certificates are created, purchased, surrendered and incorporated into electricity contracts. They should also understand the difference between buying renewable electricity and obtaining the associated renewable energy certificates.
This guide explains LGCs and renewable energy certificates in practical business terms.
Renewable Energy Certificates, or RECs, provide a mechanism for representing renewable electricity generation. Rather than attempting to trace individual electrons from a wind or solar project to a particular business site, certificates allow eligible renewable generation and its associated environmental attributes to be accounted for separately.
Australia's renewable energy certificate framework includes certificates associated with eligible renewable electricity generation. For large-scale generation, the relevant certificates are Large-scale Generation Certificates.
Consequently, businesses evaluating renewable electricity arrangements should look beyond the electricity price itself. Certificate ownership, transfer and surrender can influence both the financial value of an agreement and how the organisation supports its renewable energy objectives.
An LGC is a Large-scale Generation Certificate associated with eligible electricity produced by an accredited large-scale renewable power station.
Generally, one LGC represents one megawatt-hour, or MWh, of eligible renewable electricity generated.
Eligible generation can come from renewable sources such as:
Once created, LGCs can be traded. Therefore, the physical electricity and the certificate representing eligible renewable generation do not necessarily have to be purchased by the same party.
This distinction is particularly important for businesses. Simply purchasing electricity does not automatically mean a company owns the associated LGCs. Contract terms determine whether certificates form part of a renewable electricity arrangement.
The LGC market connects renewable generators with parties that need or choose to acquire renewable energy certificates.
The basic process can be understood in five stages.
| Stage | What happens |
| Renewable generation | An accredited renewable generator produces eligible electricity |
| Certificate creation | Eligible generation enables LGC creation |
| Certificate trading | LGCs can be sold or transferred |
| Business procurement | Businesses may acquire certificates directly or through energy arrangements |
| Surrender | Certificates can be surrendered so they cannot be reused |
For businesses, the final stage deserves particular attention. Purchasing certificates and surrendering them are related but distinct actions. Once an eligible certificate is surrendered, it can no longer circulate in the market.
Therefore, businesses developing renewable electricity strategies need appropriate records and procurement arrangements rather than relying only on statements about where electricity was generated.
Renewable energy certificates can support several aspects of an organisation's electricity and sustainability strategy.
Businesses operating from standard electricity grids generally receive electricity generated from multiple sources. Consequently, the electricity arriving at a facility cannot normally be physically separated according to its generation source.
Certificates provide an accounting mechanism linked to eligible renewable generation.
A business may purchase LGCs independently or obtain them as part of a broader renewable electricity arrangement. Therefore, certificates can form one component of an organisation's overall procurement strategy.
Renewable generators can receive revenue from electricity sales as well as the certificates associated with eligible generation. This additional value forms part of the economics of Australia's renewable energy market.
Not every organisation can install enough renewable generation at its own premises. Office tenants, manufacturers with limited roof space and businesses operating across many locations may face practical restrictions.
Certificates can provide another avenue for incorporating renewable electricity attributes into an energy strategy.
One of the most important concepts for businesses is that electricity and its associated LGC can be treated as separate products.
Consider a renewable generator that produces one MWh of eligible electricity. The electricity can enter the grid, while an associated LGC may be created and traded separately.
Therefore, a business purchasing grid electricity may not necessarily receive renewable energy certificates with that electricity.
| Component | What the business receives |
| Electricity supply | Physical electricity used by operations |
| LGC | Certificate associated with eligible large-scale renewable generation |
| Electricity plus LGCs | An arrangement combining energy procurement with associated certificates |
This distinction becomes particularly relevant when evaluating renewable electricity supply agreements and Power Purchase Agreements.
LGCs have a market value and that value can change.
The supplied Energy Action material highlights how historical LGC prices have experienced significant fluctuations as market conditions changed. Supply and demand, renewable project development, corporate demand and government policy can all influence the market.
Several factors can affect certificate pricing.
| Market factor | Potential influence |
| LGC supply | Greater supply can place downward pressure on prices |
| Certificate demand | Higher demand can support stronger prices |
| Renewable project development | Additional generation can increase certificate supply |
| Corporate renewable commitments | Increased procurement can influence demand |
| Policy settings | Regulatory changes can alter market expectations |
| Market sentiment | Expectations can affect short-term trading behaviour |
As a result, businesses should avoid assuming that historical LGC prices indicate future costs. Instead, organisations should consider their purchasing timeframe, required certificate volume, sustainability objectives and tolerance for price volatility.
Power Purchase Agreements, or PPAs, are another important consideration when discussing LGCs.
A renewable energy PPA establishes commercial terms between an electricity buyer and a renewable energy arrangement. Depending on the contract, LGCs may be included, separately priced, transferred under specific conditions or excluded.
Therefore, businesses should never assume certificate ownership simply because an agreement relates to renewable generation.
Before signing an agreement, businesses should clarify:
These questions can prevent misunderstandings and help ensure the contract supports the organisation's intended renewable energy strategy.
Businesses may have different options for obtaining LGCs. The appropriate approach depends on factors including budget certainty, certificate requirements and risk tolerance.
Spot market purchasing provides flexibility because businesses can acquire certificates according to shorter-term requirements. However, market prices can move, which creates uncertainty.
Longer-term arrangements can provide greater price predictability. Nevertheless, they may also require businesses to commit to volumes and contractual terms over a longer period.
| Approach | Main advantage | Main consideration |
| Spot purchasing | Flexibility | Exposure to price movements |
| Longer-term certificate agreement | Greater cost certainty | Longer commitment |
| PPA with LGCs | Integrates energy and certificates | Greater contractual complexity |
| Mixed strategy | Balances flexibility and certainty | Requires active management |
No single approach suits every organisation. Therefore, businesses should assess certificate procurement alongside their wider electricity purchasing strategy.
An effective renewable energy certificate strategy starts with clearly defined objectives.
First, establish what the business wants to achieve. Renewable electricity objectives, procurement budgets and reporting requirements should guide certificate purchasing rather than the other way around.
Second, review existing electricity contracts. Determine whether LGCs are already included and establish who owns the certificates under each agreement.
Third, calculate the expected certificate requirement. Understanding electricity consumption provides a foundation for estimating the scale of procurement required.
Next, evaluate available purchasing structures. Businesses can compare shorter-term purchases, longer-term arrangements and contracts that bundle certificates with renewable electricity.
Finally, establish appropriate governance. Certificate purchasing, ownership, transfer, surrender and record keeping should have clearly assigned responsibilities.
Businesses can encounter problems when certificate arrangements are not properly understood.
One common mistake is assuming that buying electricity described as renewable automatically transfers the associated certificates. Contract documentation should make ownership explicit.
Another mistake is focusing entirely on certificate price. A low purchase price may look attractive, but organisations also need to consider certificate eligibility, contract terms, timing and their wider energy strategy.
Businesses should also avoid treating LGC procurement as separate from electricity procurement. Coordinating both areas can provide a clearer picture of overall energy costs and contractual exposure.
Finally, organisations should keep appropriate records. Strong documentation makes it easier to demonstrate what certificates were purchased, transferred and surrendered.
Understanding renewable energy certificates business strategies is increasingly important for Australian organisations considering renewable electricity procurement. LGCs provide a tradable mechanism associated with eligible large-scale renewable electricity generation, while their market price reflects factors such as certificate supply, demand, policy settings and corporate procurement.
However, businesses need to look beyond simply purchasing certificates. Electricity contracts, LGC ownership, certificate surrender, pricing exposure and long-term renewable energy objectives should work together as part of an integrated strategy.
Energy Action helps Australian businesses understand energy procurement, renewable energy contracting and the commercial considerations surrounding LGCs and renewable electricity. By working with experienced energy specialists, organisations can assess available options, manage procurement risks and develop an energy strategy suited to their financial and sustainability objectives. Visit Energy Action to explore how professional energy procurement support can help your business make more informed energy decisions.
Renewable energy certificates provide a mechanism for representing eligible renewable electricity generation separately from the physical electricity delivered through the grid. For Australian businesses, LGCs are particularly relevant to electricity generated by eligible accredited large-scale renewable power stations. Businesses should ensure that any certificate procurement aligns with their contracts, reporting requirements and wider renewable energy objectives.
An LGC is a Large-scale Generation Certificate associated with eligible renewable electricity generated by an accredited large-scale renewable power station. Generally, one certificate represents one MWh of eligible renewable electricity generation. LGCs can be traded separately from electricity, which means businesses need to understand certificate ownership when negotiating renewable electricity agreements.
Businesses can obtain LGCs through different procurement structures, including certificate purchasing arrangements and renewable electricity contracts that include certificates. Some PPAs can also incorporate LGCs, although their inclusion depends on the contract terms. Therefore, businesses should compare price, volume, certificate transfer arrangements and contractual responsibilities before committing.
No. LGC market prices can fluctuate as supply, demand, renewable generation, policy conditions and corporate purchasing activity change. Historical market movements demonstrate that certificate prices can vary substantially over time. Businesses that require budget certainty may therefore consider longer-term procurement arrangements, while organisations comfortable with market exposure may retain greater purchasing flexibility.
Not necessarily. Whether LGCs transfer to the buyer depends on the terms of the PPA, so businesses should never assume that purchasing renewable electricity automatically provides ownership of the associated certificates. Before signing, organisations should confirm certificate ownership, volume, pricing, transfer, surrender arrangements and responsibilities if renewable generation does not meet contracted expectations.
