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Originally posted by SonicBlast: ↑

www.lumea.com.au/projects/snowy-2-0-transmission-connection-project/
LUMEA™
9-12 minutes

Customer

Snowy Hydro Limited (SHL) is undertaking the largest energy project in Australia. The expansion of theSnowy Mountains Hydro-electric scheme involves linking the existing Tatangara and Talbingo reservoirs through a series of underground tunnels, and the construction of an underground hydro-electric power station.
The scheme will enable dispatch of up to 2,000 MW of on-demand generating capacity to the grid. It will also provide unparalleled long-duration storage (350,000 MWh), which the power system will increasingly require as more coal-fired power stations retire. It will store enough energy to power approximately three million homes for a week. The first power generated from Snowy 2.0 is expected in 2028.

Timeline

Challenge

Demand for reliable, clean energy is increasing across NSW, Victoria, South Australia, and Queensland. By expanding the current Snowy Scheme and building additional transmission lines between the states, energy users from South Australia to Queensland will benefit from the energy and storage that Snowy 2.0 will provide.
The Snowy Scheme is the largest pumped hydro facility in Australia, requiring bespoke transmission connection infrastructure.

Solution

The Project is building the transmission infrastructure that will enable Snowy 2.0 to deliver electricity to Australian consumers. It will do this by connecting Snowy 2.0 into the NSW electricity grid and the National Energy Market (NEM). This connection means that the renewable energy (up to 2,000 megawatts) been generated and stored can be distributed within minutes when it is most needed. 
The Snowy 2.0 Transmission Connection project (STCP) will connect the Snowy Hydro 2.0 project into the National Electricity Market.
Click here to enlarge map
The project includes the construction of 9km of new high voltage transmission lines which will span the Tumut River and a switching station located in the Bago State Forest.  The project team will construct and upgrade access tracks to the new switching station and transmission line structures, as required.
Categorised as Critical State Significant infrastructure (CSSI), the STCP is subject to planning and environmental regulations, and required approval from both the NSW and Commonwealth Governments.
The project is a controlled action under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC) and was assessed under the bilateral agreement process between the NSW and Commonwealth Governments.
We recognise that this project is challenging due to its location in the Kosciuszko National Park. We will work closely with industry and community stakeholders to minimise disruption and impact. We are proud to be working with our delivery partners and the Snowy Valleys community to enable landmark reform in the way renewable energy is harnessed for Australian energy consumers.
Transgridhas beenengaged  by Lumea as our delivery partner for the design, planning, approvals and construction of the STCP.
An Environmental Impact Statement (EIS) was required to assess the project’s expected impacts on land, water, air, flora and fauna biodiversity, heritage, amenity, transport and other social, environmental and economic factors. Following public exhibition, the EIS received submissions which led to modifications to further minimise project impacts.

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Sonic Those pipes in the top dam, look close to the top of the water, what happens in a really Bad Drought. Like a super Drought???