AGL Energy (ASX: AGL) is one of Australia's oldest and largest integrated energy companies, with a history dating back over 180 years. It supplies electricity and gas to residential, small and large business customers across Australia. AGL owns and operates some of the country’s largest power generation assets, including coal, gas, and renewable energy plants. In recent years, AGL has faced increasing pressure to transition towards cleaner energy sources as part of Australia's broader push towards net-zero emissions.

The company is actively investing in renewable projects such as battery storage, wind, and solar farms to reshape its portfolio for a more sustainable future. Despite the challenges of managing ageing coal assets and navigating a changing regulatory environment, AGL remains a significant player in the Australian energy market. Its recent corporate restructuring plans and future growth strategy are focused on delivering reliable, affordable, and sustainable energy. For investors, AGL offers exposure to both the traditional and renewable energy sectors, making it a stock to watch as the Australian energy transition continues.

It is another major oil and gas producer on the ASX, with a market capitalization of over $24 billion, a most recent annual profit of US$790bn and annual production of 103.2mmboe. Santos has assets in Australia, Indonesia, and Vietnam that have 3,280mmboe in 2C contingent reserves and is a leading supplier of LNG to the global market. The company is also investing in renewable energy projects, such as in solar projects and wind power. It is targeting Net Zero by 2040.

Beach Energy (ASX: BPT) is a prominent Australian oil and gas exploration and production company with operations across several major onshore and offshore basins. Headquartered in Adelaide, Beach has built a diverse portfolio through both organic growth and strategic acquisitions. It holds significant interests in the Cooper Basin, one of Australia's most prolific onshore oil and gas regions, as well as stakes in assets across Western Australia, Victoria, and New Zealand. Beach Energy focuses on delivering sustainable cash flows through efficient operations and disciplined capital management.

Despite the global shift towards renewables, oil and gas remain crucial components of Australia's energy supply, and Beach’s stable production base provides resilience amid market volatility. The company is also taking steps to future-proof its business by investigating carbon capture and storage (CCS) technologies and other emission reduction initiatives. For investors, Beach Energy offers exposure to the traditional energy sector with the potential for consistent dividends and moderate growth. Its strong balance sheet, commitment to operational efficiency, and strategic investment in new technologies make it a noteworthy player in Australia's evolving energy landscape.