In the middle of Australia's largest city the downtown business borough is now officially powered by 100% green energy thanks to the "largest standalone renewables agreement for an Australian council to date."

The City of Sydney, which is home to a quarter-million people, has begun sourcing all of its energy from two solar farms and the largest wind farm in all of New South Wales.

The transition was facilitated through a power purchase agreement (PPA) with electricity retailer Flow Power. Although the historic deal costs AU$60 million, the initiative is expected to save AU$500,000 every year, according to Euronews.

The initiative is also expected to purge roughly 20,000 tons of CO2 from the city's carbon footprint—roughly 70% of its total output—before 2024, which is several years earlier than its original goal.

"Cities are responsible for 70% of greenhouse gas emissions worldwide, so it is critical that we take effective and evidence-based climate actions," said Sydney Mayor Clover Moore.

"The City of Sydney became carbon neutral in 2007, and were the first government in Australia to be certified carbon neutral in 2011," she added. "This ground-breaking $60 million renewable electricity deal will also save our ratepayers money and support regional jobs in wind and solar farms in Glen Innes, Wagga Wagga, and the Shoalhaven."

Seventy per cent of the world’s emissions are generated from cities, so the action city governments take is absolutely critical. https://t.co/fatMzgPATd

— Clover Moore (@CloverMoore) July 7, 2020

Seventy per cent of the world's emissions are generated from cities, so the action city governments take is absolutely critical. https://t.co/fatMzgPATd