But if it grows its top line at a CAGR of 15% from 2030 to 2040, then continues to grow at a CAGR of 10% from 2040 to 2050, it could still generate $415 billion in annual revenue by that final year.

Australia’s national broadband network operator plans to tap renewable energy and roll out energy-efficient fibre as part of its longer-term target to achieve net-zero emissions by 2050.

The UK government is targeting net-zero greenhouse gas emissions by 2050, but it will need the private sector's help and its appetite for investing in green technologies to meet its goal.