| Historical notes: | STATEMENT OF COUNTRY
The lower north shore of Sydney is within the Country of the Cammeraygal or Cammeraigal (AIATSIS 2016).
The Cammeraygal had a rich and complex ritual life, language, spirituality, and system of law, embedded in the land. The land and harbour provided food resources for gathering, hunting, and fishing, its sandstone overhangs gave shelter (Attenbrow 2010; Hoskins 2024). Evidence of this remains visible within foreshores, reserves, and parks, consisting of occupation sites, paintings, rock engravings, burial sites, and axe grinding grooves can be found (Latona Masterman 2003: 2).
The Cammeraygal were amongst the first to interact with colonists, with resultant catastrophic impacts (Tench 1793, WSP 2022). By April 1789 it is estimated that almost half of Sydney's Aboriginal population had died of smallpox. Survivors regrouped in Broken Bay, Kissing Point (Ryde), Woolloomooloo, La Perouse, and Botany Bay (Tropman & Tropman 2008: 6).
Aboriginal people were still living on the lower north shore in the 1820s, but disease, displacement, and deaths drove them out by the 1860s. In 1878 they were camping on Berrys Bay foreshore, but as the population and social structure of clans was undermined, people remaining were 'relocated' to La Perouse in the 1880s (Hoskins 2010).
EARLY ELECTRICITY NETWORKS IN NSW
Prior to introducing electricity in NSW, streets were lit with gas and houses used gas, kerosene and fat oil lamps, and candles. Technological advances in the 1870s and 1880s made electricity a feasible lighting and power alternative. Early supply was from small generators and early providers of networks were principally municipal Councils.
The first instance municipal electric power supply in NSW was streetlighting in regional centres experiencing major growth in the 1880s. Tamworth and Young were amongst the first examples, with Tamworth receiving electric streetlight in 1888 and Young in 1889.
ELECTRIFICATION OF SYDNEY
Sydney's first public demonstration of electric light was in 1863 when Sydney Observatory was illuminated in honour of the Prince of Wales's marriage (Australian Energy Regulator 2007, p. 2). Early supply was from small generators scattered throughout the city for specific buildings or events.
Large-scale production was in its infancy in NSW in the 1890s, and the number of facilities constructed to generate or distribute electricity was relatively insignificant compared to municipal gas works established in that decade. Local municipalities pushed for legislation allowing them to generate electricity, build infrastructure, light streets and supply public and private places. Sydney's first council to generate and supply electricity to private homes, businesses and street lights was Penrith, which established an electric light station in 1890 (Nepean Times 1957, p. 1). Another one was built closer to the city at Redfern in 1891.
The wealthiest municipality, the Municipal Council of Sydney (MCS), got State government consent to establish its own networks and supply private customers under the Municipal Council of Sydney Electric Lighting Act 1896. Its Electric Lighting Committee was established in 1898 to bring the network to the MCS area, reaching from Millers Point to Chippendale, Surry Hills and Moore Park (City of Sydney n.d.). While originally supplying the MCS area only, it soon became the biggest municipal supplier of electricity in NSW.
Sydney's first major central power station was the Ultimo Powerhouse (listed on the State Heritage Register (SHR) as part of Powerhouse Museum Complex, Ultimo (SHR 02045)), built in 1899 by the NSW Department of Public Works to power the electric tram network. Construction of White Bay Power Station, Rozelle (SHR 01015) followed in 1913 (Dunn, 2008).
MCS's first power station supplying street lighting and private use was at Pyrmont and opened in 1904. While earlier 'electric light stations' were small power stations supplying a small area, large power stations required the technological development of several types of substations to convert electricity to lower voltages for private use. Substations were designed to house transformers and other bulky equipment, such as AC to DC convertors, switchgear and batteries. Two types emerged, the zone and distribution substation. Zone substations were large complex facilities receiving power from bulk supply power stations such as Pyrmont and reducing voltage for local distribution. Distribution substations reduced the voltage further and supplied customers.
City Building Surveyor and City Architect Robert Hargreave Brodrick designed Pyrmont Power Station, and his branch designed hundreds of substations across Sydney to be substantial, ornamental pieces of civic infrastructure (Vade Mecum 1906, p. 200). The quality of design and construction was high, moving beyond functionality to fine civic architecture that sat comfortably in its surrounds. Land for the substations was either purchased in negotiation with owners or acquired by resumption if necessary. All stand-alone substations until 1936 were designed by MCS's City Architect & Building Surveyor but built by various parties.
In 1904 MCS built its first six distribution substations: Town Hall (Sydney), Lang Park (Sydney), Athlone Place (Ultimo), Pyrmont Street (Pyrmont), Oxford Street (Darlinghurst) and Nicholson Street (Woolloomooloo).
MCS first began supplying other areas of Sydney in 1905. A small substation was built to supply the Royal Hospital for Women in Paddington and another for Camperdown Children's Hospital (Murray, 2025).
Smaller private companies supplying city businesses were bought by MCS from 1907-13. MCS quickly established itself as one of two primary electricity suppliers in Sydney, with the Electric Light and Power Supply Corporation (ELPSC) supplying electricity from Balmain Power Station to inner western suburbs from 1909 to 1956. In 1910, four municipalities entered agreements with MCS to extend mains into their areas, a rapid escalation to the extent of the network.
By 1914 MCS supply reached 23 municipalities outside the city centre, in the largest electricity network in NSW. The subsequent rapid expansion of the network in the 1920s was on a scale unprecedented in Sydney or the State and this continual network expansion required constructing additional infrastructure throughout greater Sydney. This means that a significant portion of MCS's substations were built from 1921 onwards.
CROWS NEST
In 1819, business partners Edward Wollstonecraft and Alexander Berry settled large land grants of approximately 520 acres each that included the Crows Nest area. The suburb took its name from the cottage 'Crow's Nest' built by Wollstonecraft in 1821. In 1827, Berry married Wollstonecraft's sister Elizabeth, acquiring title to Crow's Nest estate on Edward's death in 1832 (Godden Mackay 1993, volume 1: 31). The land was rural, being used by Berry for farming and grazing and was subdivided after Berry's death in 1873. However, settlement in the general area was slow, primarily due to the ruggedness of the landscape and difficult access (North Sydney Council, 2026)
The growth of the area accelerated following the introduction of trams which provided easy access to ferries that transported people across the harbour. The first tram connected Milsons Point to Ridge Street in 1886 and was extended to Crows Nest in 1893. Where a new line opened, subdivision followed and suburbs including Crows Nest were created (Godden Mackay 1993, volume 1: 55). The residential character of Crows Nest expanded rapidly in the late 19th and early 20th century, leading to a demand for services. This was further driven by the opening of the Sydney Harbour Bridge in 1932 and the post war population increase through the construction of apartment buildings (North Sydney Council, n.d.). The population of Crows Nest continued to grow throughout the 20th and into the 21st century.
SUBSTATION, CROWS NEST
MCS built Bunnerong Power Station (Botany) from 1925 to 1929 to increase capacity for supplying electricity to outer Sydney suburbs such as Pymble. It was among Australia's most modern power stations, equal in size to White Bay, and capable of supplying approximately one third of NSW's electricity.
The substations built in the north shore of Sydney, such as the one in Crows Nest, demonstrate MCS's rapid network expansion once Bunnerong was capable of supporting electricity production for these areas. Crows Nest was to be one of five 33 kV zone substations established in conjunction with this massive expansion of the Sydney network and was a key component in distributing power to the suburbs of the north shore. It supplied nearly all northern suburbs up to Pymble.
Plans for the Crows Nest substation commenced in 1926. The building was designed by 8 July 1926, with plans signed by Brodrick. At the request of the MCS General Manager, the external design was simplified, though it remained more ornate than many other 1920s structures. Ornamentation at roof level and between second-storey windows was removed, and the principal door was replaced with a roller shutter.
Steel shortages delayed construction, necessitating a temporary substation on the site in March 1927. The permanent substation was equipped by November and commenced operation a full year before Bunnerong Power Station was completed. When Bunnerong came online, Substation, Crows Nest, became a key distribution point for its output.
Rising construction costs between 1926 and 1930 likely encouraged pragmatic simplification and standardisation of MCS designs. Substation, Crows Nest, became one of three standard designs developed for broader rollout, balancing efficiency with local stylistic variation. The three substations that formed the prototype for each standard design were Zetland, Marrickville and Crows Nest (Vade Mecum 1930: 249 - 253).
'Crows Nest' type substations were distinct among substations built in the 1920s in that they were two-storeys internally[NR1.1], with transformers on the ground floor and 33 kV switchgear on the upper floor (Ausgrid, n.d.). Most zone substations were single floors but built with false second storeys indicated by their exterior detailing and window placement.
Following commissioning of Substation, Crows Nest, in 1931, three concrete bays were constructed behind the substation to house specialised 33/22 kV auto-transformers, previously installed temporarily in the transformer roadway beside the building.
1935 was an important year in the history of electricity in the Sydney region. By 1935, 16 Local Government Areas were supplied by MCS across an area of over 747 square miles (193,472 Ha). The Gas and Electricity Act 1935, removed network control from the MCS, reconstituting its Electricity Department as an independent entity, Sydney County Council (SCC). The SCC was tasked with coordinating the future development of the largest network in the state and taking a wider strategic approach to delivery (Australian Energy Regulator, 1996).
That same year, Substation, Crows Nest, served as a trial installation for a remote supervisory control system. This meant that a system operator could operate switchgear for other substations from Crows Nest. The system was a success and remained in operation until 1963 (Pennington 2012: 14, 80). This innovation was part of a wider push for remote control across the industrial sector and is an important part of the technological shift towards automation (Bennett, 1993). Being a remote control centre made Crows Nest a particularly important part of the largest electricity network in NSW during the mid-20th century, right through the next significant shift in electrical capacity in NSW in the early 1950s (CSIRO, 2020).
In 1952, the NSW Electricity Commission (Elcom) became overall State authority in NSW. Elcom was able to increase capacity across NSW, including heavy investment and capacity uplift in Syudney.
In 1952, two smaller brick outdoor reactor bays were added along the southern wall of Substation, Crows Nest, followed by three larger outdoor bays to accommodate new main transformers. These upgrades allowed existing transformers to be removed from the internal bays. In 1954, the removal of dividing walls between former indoor transformer bays was found to have compromised the structural capacity of the first-floor steelwork, prompting strengthening works to affected beams, girders and columns (Pennington 2012: 80).
Elcom was dissolved with the Sydney Electricity Act 1990. A series of private and public entities now provide electricity and its infrastructure in Sydney, overseen by the NSW Government. Ausgrid now manages most active distribution and zone substations.
In 2010-2011 a new substation and geographic information system facility was constructed behind the substation building. Part of this facility is in the curtilage of Substation, Crows Nest. |