Power Purchase Agreements (PPA) Explained: Australian Business Guide

With energy prices moving around and sustainability high on the agenda, many Australian businesses are looking for ways to secure cheaper, cleaner electricity over the long term.

One option growing fast is a Power Purchase Agreement (PPA). It can help you lock in predictable energy costs and support new solar or wind projects - but it’s still a serious commercial contract with real risks to manage.

In this guide, we break down how PPAs work in Australia, the legal and regulatory issues to watch, and the key clauses to negotiate so you can make an informed decision with confidence.

What Is a Power Purchase Agreement?

A Power Purchase Agreement (PPA) is a long-term contract to buy electricity (often from a renewable project like a wind or solar farm) at an agreed price and for an agreed period.

In simple terms, your business commits to purchase a quantity of power and, in return, gets price certainty and the ability to claim renewable credentials if the agreement includes the related certificates. These contracts commonly run 5–20 years and set out roles, responsibilities and risk allocation between you and the energy seller.

Australian businesses use PPAs to:

• Secure predictable energy pricing and hedge against wholesale market volatility.
• Support new renewable projects and report progress against sustainability targets.
• Potentially reduce energy spend over the long term with competitive rates.
• Increase visibility and control over energy procurement strategy.

That said, there’s no “standard” PPA. They’re negotiated case by case, which is why understanding the mechanics and legal terms is critical before you sign.

How Do PPAs Work In Practice?

Most business PPAs fall into two broad models. The right one for you depends on your energy profile, property setup and risk appetite.

On-Site PPA

Under an on-site PPA, a third party installs and owns a renewable system at your premises (for example, rooftop solar with inverters). You buy the electricity the system generates at the price agreed in the PPA, and the provider handles installation, operation and maintenance.

This can be attractive if you want solar benefits without upfront capex. You’ll usually need site access rights, and in many cases a short-form lease or a Property Licence Agreement to formalise use of your roof or land.

Off-Site (Virtual or Sleeved) PPA

With an off-site PPA, you enter a contract linked to a wind or solar farm located elsewhere and settle against the electricity it generates. Power physically flows through the grid. Depending on the structure, it can operate more like a financial hedge tied to market prices than a physical supply arrangement.

Many off-site deals also include Large-Scale Generation Certificates (LGCs), which are essential if you want to make claims about using “renewable electricity”. We explain LGC ownership and retirement below.

Key Mechanisms You’ll See

• Term: Often 5–20 years to give both sides certainty.
• Price: Fixed, indexed or formula-based $/MWh pricing (sometimes with collars or floors).
• Volume: A defined annual quantity, a percentage of project output or a take-or-pay commitment.
• Certificates: LGCs (and sometimes STCs for smaller systems) and who owns/retire them.
• Metering and settlement: How energy and certificates are measured and invoices are calculated.
• Change in law and force majeure: How regulatory shifts or external events are handled.
• Defaults and exit rights: Remedies if either party fails to perform, and any early termination fees or buyout options.

Because the financial commitments can be material, it’s important to negotiate a balanced position across price, volume, performance and exit rights - not just the headline rate.

Legal And Regulatory Considerations In Australia

PPAs are commercial contracts, but they sit within a regulated energy market. It’s important to understand where the key obligations arise and to avoid over- or under-stating what’s required.

National Electricity Market (NEM) Context

Most grid-connected PPAs in eastern and southern Australia reference the National Electricity Market framework. Your PPA doesn’t “certify” NEM compliance on its own, but the deal should align with how energy is scheduled, metered and settled in practice, especially for off-site structures. Your retailer, generator and any intermediary typically manage market participation and operational compliance.

Renewable Energy Certificates And Marketing Claims

If you want to say your business uses renewable electricity, make sure you have clear rights to the relevant LGCs and that they are actually retired on your behalf. Without ownership and retirement of the certificates, you generally can’t claim the environmental attributes of that generation.

Any public claims should also comply with the Australian Consumer Law (ACL) provisions on misleading or deceptive conduct. It’s safer to ground claims in the certificates you hold and retire. For an overview of how the ACL works in this context, see Section 18 (misleading or deceptive conduct).

Financial Services Law For “Virtual” Structures

Some off-site “virtual” PPAs (including contract-for-difference style settlements) can operate like derivatives. Depending on the structure and counterparties, the arrangement may be a financial product that involves Australian Financial Services Licence (AFSL) considerations.

This doesn’t mean all VPPAs require an AFSL, but it does mean you should get advice on whether the product is a derivative or otherwise regulated. Many businesses choose to contract through their electricity retailer or use structures designed to avoid creating a separate financial product exposure. Getting this right early will save headaches later.

Privacy And Data

On-site installations and monitoring systems often collect operational and energy data. If personal information is captured or shared (for example, via customer portals or subcontractors), you’ll need a clear Privacy Policy and appropriate contract terms with your suppliers and operators.

Work Health And Safety, Construction And Access

For on-site systems, your PPA should dovetail with construction and safety obligations (for example, site inductions, rooftop access, contractor management and insurance) and include appropriately drafted access/licence terms for installation and maintenance. This is where a simple property licence, or in some cases a short-form lease, comes in.

Consumer Law And Business Customers

If you sell on electricity or include energy-related claims in your marketing, general ACL obligations apply. Make sure contract wording, performance promises and sustainability representations are accurate and backed by data and certificates. Overstated “100% green” claims can attract scrutiny.

A Note On “Regulatory Benefits”

Businesses sometimes assume a PPA automatically meets mandatory federal or state renewable targets. In most cases, those targets apply to liable entities in the electricity market (like retailers). A PPA can help your business meet voluntary goals, but it doesn’t, by itself, satisfy another party’s regulatory obligation unless the structure expressly transfers that outcome and all certificate rights.

What Should Your PPA Cover?

Every PPA should be tailored to your needs, risk profile and growth plans. Focus on the clauses that most affect cost, delivery, risk and your ability to make renewable claims.

Commercial Core

• Price and indexation: Is the price fixed, CPI-indexed or formula-based? Are there caps/floors?
• Volume and flexibility: Is it a fixed annual quantity, a percentage of load or output, and do you have rights to shape, firm or adjust volumes over time?
• Term and extensions: Clear start/commencement milestones, commercial operation date, and options to extend.
• Performance and outages: Availability thresholds, liquidated damages (if any), planned maintenance windows and notice requirements.

Certificates And Environmental Attributes

• Ownership: Who owns the LGCs generated? At what point do they transfer?
• Retirement process: Will the seller retire on your behalf or will you retire them? How is evidence provided?
• Claims: A clear clause on how you can describe the arrangement in sustainability reports and marketing, aligned with ACL requirements.

Risk Allocation

• Change in law: What happens if network charges, market rules or certificate schemes change materially?
• Force majeure: How are events like storms, bushfires or grid constraints dealt with, and for how long?
• Curtailment and grid constraints: Who bears the risk if the network curtails output?
• Credit support: Parent guarantees, security and rights if a party’s financial position changes.

Defaults, Termination And Exit

• Early termination: Exit triggers (for example, prolonged underperformance) and any break fees or buyout formulas.
• Step-in and cure rights: Notice and opportunity to remedy before termination.
• Assignment and novation: Rules for transferring the contract (for example, if you sell the business or restructure).

If you’re negotiating a complex or one‑sided draft, it’s worth getting targeted negotiation support so key risks are managed and the commercial deal you think you’re getting is reflected in the wording.

Step-By-Step: How To Put A PPA In Place

Here’s a practical path many Australian businesses follow when exploring a PPA.

1) Map Your Needs And Goals

Analyse your current and forecast electricity usage (time of day, seasonality and expected growth), your appetite for long-term commitments, and your sustainability objectives. Decide whether you’re targeting a partial hedge or near‑full coverage of your load.

2) Choose On-Site, Off-Site - Or A Mix

On-site PPAs can be great if you have suitable roof space and daytime load. Off-site PPAs can scale to larger volumes and may be more flexible. Some businesses combine both to diversify risk.

3) Go To Market

Approach reputable developers, retailers and intermediaries. Compare not just price but term, shaping/firming options, certificate treatment, credit support, curtailment risk and exit rights. Ask for worked examples of settlement and invoice calculations.

4) Due Diligence

For on-site projects: check structural suitability, safety plans, warranties and access terms (often documented via a Property Licence Agreement). For off-site: review project status, delivery risk, congestion history and counterparties’ financial strength. If a “virtual” product is proposed, test whether financial services laws are engaged.

5) Negotiate The Contract

Focus on price/indexation, volume flexibility, certificate ownership/retirement, change in law, curtailment, termination and security. If you’re partnering with investors or co-buyers, align your internal governance early (a Shareholders Agreement can help formalise decision-making if you operate through a company).

6) Finalise Related Documents

Alongside the PPA, you may need site access/licence terms, grid connection agreements (handled by the provider in many cases), and privacy and data-sharing terms. If sensitive commercial information will be exchanged during negotiations or technical design, put an NDA in place first.

7) Execute And Monitor

Execute correctly and store all sign-off evidence. Many companies sign under the Corporations Act - see Signing Documents Under Section 127 for common methods. Once live, set up dashboards for consumption vs volume, settlement accuracy, certificate transfers and key dates (like price review dates and maintenance outages).

Are PPAs Suitable For Small Businesses?

Yes - especially on-site solar PPAs or aggregated/group off-site deals. Smaller loads can still access competitive pricing if terms are right-sized (shorter terms, flexible volumes and simpler settlement). If you’re new to energy contracting, start small, build internal comfort with monitoring and billing, and then scale.

What Other Legal Documents Might You Need?

Depending on your structure and the project setup, consider the following alongside your PPA:

• Power Purchase Agreement (PPA): The main contract that sets the price, term, volume and risk allocation - we can assist with a tailored Power Purchase Agreement that fits your needs.
• Property Licence Or Access Agreement: If a system is installed at your premises, grant clear access rights, responsibilities and insurance requirements via a Property Licence Agreement.
• Privacy Policy: If energy or site data includes personal information, ensure you have an up-to-date Privacy Policy and appropriate data handling clauses with suppliers.
• Non-Disclosure Agreement (NDA): Protect technical and commercial information during procurement and negotiations with a Non-Disclosure Agreement.
• Shareholders Agreement: If you’re pursuing the deal through a company with co-founders or investors, a Shareholders Agreement sets out ownership, approvals and exits.
• Signing Logistics: Plan how your company will sign (for example, under section 127) and handle counterpart execution to avoid later disputes; if needed, our Signing Service can streamline completion.

Not every business will need every document, but most will need several. The key is to ensure the suite of documents works together and matches your commercial objectives.

Key Takeaways

• A PPA is a long‑term agreement to buy electricity (often renewable) at an agreed price and volume, designed to provide cost certainty and support sustainability goals.
• On-site PPAs suit premises with suitable space and daytime load; off-site “virtual” PPAs can scale but may raise derivative/AFSL issues depending on structure.
• If you want to make renewable claims, ensure you have ownership and retirement of LGCs and that your marketing complies with the ACL’s rules on misleading or deceptive conduct.
• Focus negotiations on price/indexation, volume flexibility, certificate treatment, change in law, curtailment risk, termination and security - the details drive real outcomes.
• For on-site deals, align the PPA with site access, safety and property rights (often via a Property Licence Agreement) and keep privacy obligations in mind for monitoring data.
• Get early advice if an off-site “virtual” structure might be a financial product, and consider using retailers or intermediaries where appropriate to manage regulatory exposure.
• Put the right supporting documents in place - PPA, access/licence, Privacy Policy, NDA and governance agreements - so the legal framework matches your commercial plan.

If you would like a consultation on setting up a Power Purchase Agreement for your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.