What is a green loan?

Claudia AinsleyWritten byClaudia Ainsley
Reviewed byMatt Leeburn
Updated 26 Aug 2026

A green loan is a purpose-specific loan for energy-efficiency or renewable energy upgrades, such as solar, batteries or heat pumps, with permitted uses the lender verifies.

Also known as: green finance, energy efficiency loan

Key points

  • A green loan is marketed for specific works: solar PV, battery storage, EV chargers, heat pumps, insulation and LED upgrades.
  • Options run from unsecured personal loans to secured home loan top-ups, vendor finance at the point of sale, and government co-financed schemes.
  • Lenders often ask for quotes, product specifications or installer invoices before drawdown to confirm the money went on eligible upgrades.
  • For personal or household purposes, responsible lending obligations under the National Consumer Credit Protection Act apply; business borrowing sits outside that regime.

How a green loan works

What you can use a green loan for

Types of green loan and what to compare

Example

Not to be confused with

Personal loan
a standard personal loan can be spent on anything, while a green loan restricts what the money funds

Frequently asked questions

What can you use a green loan for?

Commonly solar PV, battery storage, EV chargers, heat pumps, insulation, draught-proofing, efficient windows and doors, LED lighting and certified energy-efficient appliances. Many lenders also cover energy assessments and the installation labour attached to a listed upgrade. The eligible list sits in the loan terms, so read it before you commit.

How do green loans differ from standard personal loans?

A green loan limits what the money may be spent on and often requires verification, such as quotes, product specs or installer invoices. Some lenders attach preferential terms to eligible upgrades. A standard personal loan is far more flexible in use but carries no green conditions or checks.

Are green loans cheaper than regular loans?

Not always. A secured green mortgage or top-up can cost less than an unsecured green personal loan, and government co-financed programs can be competitive. Point-of-sale finance varies. Compare the comparison rate and the fees over the same term rather than relying on the green label.

Can I get a green loan for solar plus battery?

Yes. Many green facilities specifically list a combined solar and battery install as an eligible project. Expect to supply a detailed quote naming the panels, inverter and battery, plus installer invoices. Check whether the one loan can cover both the equipment and the installation labour.

Do lenders check that the upgrades are actually green?

Some do. Verification can mean quotes, product specifications, installer invoices or an independent energy assessment, either before drawdown or after it. Co-financed programs tend to be stricter and may require an accredited installer. Ask the lender for its green finance policy in writing before you apply.

Go deeper

Sources

This article is general information only and is not financial advice.