By AGILE Consulting Engineers, Solar PV and Battery Energy Storage Systems (BESS) specialists.
A grant and a concessional loan solve different problems, and treating them as interchangeable is a common way businesses end up chasing the wrong pathway for months. One reduces the total cost of a project outright. The other reduces the cost of financing it. Understanding which gap each one is designed to close, and how Australia’s two main clean energy funding bodies actually work together, matters more than picking a favourite.
Table of Contents
- Two Different Tools, Not Competing Options
- How Grant Funding Works in Practice
- How Concessional Finance Works in Practice
- Where the Two Meet in a Single Capital Stack
- Factors That Typically Influence the Choice
- A Real Example of Grants and Finance Working Together
- What to do next
- FAQ
Two Different Tools, Not Competing Options
In Australia, the two main federal bodies supporting renewable energy funding operate on fundamentally different models. The Australian Renewable Energy Agency (ARENA) provides grant funding, which does not need to be repaid, and is generally targeted at projects that involve technology or commercial risk not yet suited to standard debt or equity finance. The Clean Energy Finance Corporation (CEFC), by contrast, provides concessional finance, structured as debt or equity investment that is repaid, but on terms more favourable than a business might secure from a commercial lender, such as lower interest rates, longer loan maturities, or more flexible grace periods before principal and interest repayments begin.
Neither is inherently “better” than the other; they’re designed to solve different problems at different points in a project’s development, and for many larger renewable energy projects in Australia, both end up being used at once, in different parts of the same capital structure.
How Grant Funding Works in Practice
ARENA’s grant funding is explicitly limited to that: grants, spanning eligible projects from research and development through to early commercialisation and deployment. ARENA has described its role as bridging a gap to enable projects that cannot yet be funded on a purely commercial-returns basis, meaning grant funding tends to be concentrated on projects carrying technology risk, first-of-a-kind deployment risk, or a cost structure that doesn’t yet stack up against conventional finance. Because it doesn’t require repayment, a grant directly reduces the total capital cost of a project, which can be the difference between a marginal project proceeding or not.
The tradeoff is that grant funding is typically harder to access than debt. It’s usually competitive, assessed against detailed merit and value-for-money criteria, and often requires the applicant to demonstrate additionality, essentially that the project wouldn’t proceed without the grant. Grant programs are also frequently structured in specific funding rounds or priority areas rather than as an open-ended facility a business can draw on whenever needed.
How Concessional Finance Works in Practice
The CEFC operates as what’s often described as Australia’s green bank, and as of August 2026 has access to more than $33 billion in total investment capacity following successive federal government capital allocations. In the twelve months to 30 June 2025, the CEFC committed a record $4.7 billion to large-scale renewables, energy storage and transmission projects, a figure 2.5 times higher than the prior year, driven substantially by major transmission and portfolio finance commitments.
Because concessional finance is repaid, it doesn’t reduce the total cost of a project the way a grant does, but it reduces the cost of capital, which can materially improve a project’s financial returns and make marginal projects bankable. A relevant recent example is the CEFC’s Distribution Connected Accelerator Program, which as of August 2026 has committed $100 million in concessional senior debt, delivered with infrastructure debt manager Infradebt, specifically targeting mid-scale hybrid solar-plus-storage projects up to 5 megawatts that have historically struggled to access mainstream project finance, a segment the CEFC describes as the “missing middle” between rooftop and utility-scale solar. Because this is debt, the recipient business retains full ownership and repays the finance over the loan term, unlike a grant.
Where the Two Meet in a Single Capital Stack
ARENA and the CEFC don’t operate in isolation from each other. The two agencies actively coordinate, including through a jointly managed Innovation Fund that combines grant and debt or equity investment, and ARENA has stated that businesses receiving ARENA grant funding often have the opportunity to secure follow-on long-term debt finance through the CEFC to complete a project’s capital stack. A documented example of this in practice is a large-scale energy-from-waste facility in Western Australia, where ARENA committed $18 million in recoupable grant funding alongside a CEFC commitment of up to $57.5 million in debt finance, illustrating how the two mechanisms can be layered on a single project rather than treated as mutually exclusive options.
In a blended structure like this, the grant portion typically absorbs early-stage or technology risk that debt finance isn’t suited to carry, while the concessional debt portion finances the larger, more predictable capital cost once the project’s viability has been substantially de-risked, often partly as a result of the work funded by the grant itself.
Factors That Typically Influence the Choice
Several practical factors tend to shape whether a business pursues grant funding, concessional finance, both, or neither. These include the project’s stage of technical and commercial maturity, since grants are more commonly available for earlier-stage or first-of-a-kind projects while finance suits more established, revenue-generating assets; the business’s appetite and capacity to take on debt and service loan repayments over time; the timeline pressure on the project, since grant rounds can involve lengthy competitive assessment while finance approval, once a project is bankable, can sometimes move faster; and the scale of the project, since very large projects often need both forms of capital simply because neither grant pools nor a single balance sheet can cover the full cost alone.
- Project maturity and technology risk profile
- Willingness and capacity to take on and service debt
- Timeline and competitiveness of relevant grant rounds
- Total project scale relative to available grant pool sizes
- Whether the project can demonstrate the additionality most grant programs require
This is a genuinely business-specific decision, and the tradeoffs are financial ones that depend on a business’s own risk appetite, balance sheet and strategic priorities. This article sets out how the two mechanisms function; it isn’t a recommendation of one path over the other, and any business weighing this decision should work through it with its own financial and legal advisers, since program terms, interest rate settings and eligibility criteria all change over time.
A Real Example of Grants and Finance Working Together
The Western Australian energy-from-waste project referenced above is a useful illustration of how the sequencing typically works in a blended capital stack. ARENA’s recoupable grant funding supported the project through a stage where commercial-only finance wasn’t available on suitable terms, given the technology and delivery risk involved, while the CEFC’s larger debt commitment financed the bulk of the capital cost once the project reached a bankable stage. The proportions in that project, roughly $18 million in grant funding against $57.5 million in debt, also reflect a broader pattern: grant funding tends to represent a smaller share of total project cost than concessional debt, because grants are usually reserved for the portion of risk or cost gap that debt finance can’t cover, rather than functioning as the primary funding source for the whole project.
What to do next
Deciding how to structure a capital stack across grants, concessional finance and conventional funding is ultimately a financial decision for a business and its advisers, but the technical case underpinning either pathway, the feasibility work, risk assessment and readiness evidence, is usually where a project’s eligibility for either form of support actually gets tested. This is the point where an early feasibility review can strengthen a case for either grant or finance applications, or both. AGILE Consulting Engineers has helped project teams build the technical foundation these funding conversations rely on, ahead of engaging ARENA, the CEFC or a financial adviser.
FAQ
Do I have to choose between a grant and a loan for a renewable energy project?
Not necessarily. Many larger renewable energy projects in Australia use both, with grant funding from a body like ARENA covering part of the cost or risk gap and concessional finance from the CEFC or another lender covering the larger capital cost, though this depends on project scale and eligibility for each mechanism.
Which is easier to access, an ARENA grant or CEFC finance?
It depends on the project. Grant funding is generally competitive and assessed against detailed merit criteria including additionality, while concessional finance is more accessible once a project is considered bankable, meaning it has a credible revenue or cost-saving pathway to repay the debt.
Does taking a CEFC loan affect ownership of a project?
No, generally not in the way equity finance would. Concessional debt finance is repaid over the loan term with interest, at more favourable terms than typical commercial lending, and the business retains ownership, though specific terms vary by financing structure and should be reviewed with a financial adviser.
Is grant funding always the cheaper option?
Not necessarily in every sense. A grant reduces total project cost since it isn’t repaid, but grant funding is usually only available for a portion of eligible costs and is competitive to obtain, whereas concessional finance can cover a much larger share of total project cost, just with a repayment obligation attached.
How much of Australia’s clean energy investment currently comes through the CEFC?
As of August 2026 the CEFC has access to more than $33 billion in total investment capacity, and in the twelve months to 30 June 2025 it committed a record $4.7 billion to large-scale renewables, storage and transmission projects, though this figure changes each year and should be checked against the CEFC’s current annual reporting.
Should I get financial advice before deciding between grants and loans?
Yes. This is a financial decision specific to each business’s circumstances, risk appetite and balance sheet, and program terms, interest rates and eligibility criteria change regularly, so confirming current details with the relevant body or a qualified financial adviser before applying is recommended.
