NBN Co has successfully raised AUD$850 million from its inaugural domestic Sustainability Bond issuance, in support of eligible green and social projects in line with the company’s Sustainability Bond Framework.

The transaction represents NBN Co’s largest AUD denominated 10-year bond issuance and the tightest 10-year AUD bond pricing achieved by the company to date. It is also the largest Australian corporate Sustainability Bond issued in the domestic debt capital market to date, reinforcing NBN Co’s position as a leading issuer in sustainable funding.

The Australian Medium-Term Note (AMTN) offering in 10-year sustainability format was priced on 12 March 2026 and settled on 19 March 2026.

Net proceeds from the transaction will be allocated to investments into the deployment of energy-efficient fibre and the nbn Fixed Wireless network, which help enable access to digital services and help advance digital skills and abilities in regional and remote areas.

Despite the current heightened volatility in global financial markets, NBN Co’s Sustainability Bond attracted strong interest in the domestic market and across Asia. The transaction order book was significantly oversubscribed, generating NBN Co’s largest order book for a AUD10-year bond on record.

This outcome demonstrates the depth and diversification of NBN Co’s global investor base and that investors have a strong interest in sustainable financing and support NBN Co’s highly credentialed sustainability initiatives.

This issuance brings NBN Co’s total outstanding green or sustainable financing to approximately AUD$9.5 billion equivalent, further cementing NBN Co’s position as the largest Australian corporate issuer in green and sustainability format in the domestic and international debt capital markets.

This issuance represents the tenth transaction in sustainable format by NBN Co since the launch of its first Green Bond in 2022.

Fiona Trigona, Executive General Manager, Group Treasurer, at NBN Co said: 

“We’re immensely proud to have received such a positive reaction to our first ever Sustainability Bond offering in the domestic market. This transaction demonstrates the strength of our execution in an exceptionally busy and volatile market environment. As the first AUD primary deal to price since 26 February 2026, we moved decisively following a brief pause ahead of issuance, driven by escalating geopolitical tensions.

“Importantly, the extensive marketing campaign undertaken for our inaugural domestic Sustainability Bond meant that investors were already highly engaged, allowing us to proceed directly to Indications of Interest and bypass the traditional marketing phases. This strategy enabled us to achieve a highly successful outcome despite the softer market backdrop.

Supporting Australia’s productivity and growth in a sustainable way 

NBN Co’s ongoing upgrades to its network technologies and national roll out of high-speed fibre are designed to deliver a more resilient, reliable and faster network that supports the evolving digital needs of the nation¹.

The company delivered on its commitment to implement projects that reduce annual energy use of the nbn^® network by 25 Gigawatt-hours (GWh) by December 2025.²

Also in December 2025, NBN Co’s third Power Purchase Agreement went live at the Munna Creek Solar Farm on the Sunshine Coast as the company met its commitment to 100 per cent renewable electricity purchases from December 2025.³

A research report by Ember Advisors³, released in February 2026, shows that world-class broadband delivered via the nbn® network is enabling digital inclusion and supporting Australia with positive impacts for employment, education, health and personal wellbeing.

The ‘nbn Social Impact of the nbn FY25 Insights Report’⁴ found that 77 per cent of nbn users report that having the nbn® network at home has made a positive impact on their satisfaction with life.

Footnotes

1.  A customer's experience depends on their nbn® technology, and factors outside nbn’s control (like the customer's internet provider and plan, usage during busy periods, their Wi-Fi router generation and internet equipment setup, plus the number of concurrent online devices at their premises).

2. NBN Co delivers on commitment to reduce power consumption of the nbn network | nbn

3. nbn Media Releases 12 February 2026 NBN Co delivers on commitment to reduce power consumption of the nbn network | nbn  and 22 December 2025

4. Research commissioned by nbn ‘Social Impact of the nbn network FY25 Insights Report’ 24 February 2026 nbn Social Impacts of nbn Report FY25 | nbn        

Media enquiries

NBN Co Media Hotline
Phone: 02 9927 4200
Email: media@nbnco.com.au