Tidal Energy

What is tidal energy?
Tidal energy represents an exciting new development in the renewable energy sector.  Building on other forms of renewable energy such as wind energy, that maximise naturally occurring environmental forces to generate electricity. Tidal energy is generated by harnessing the powerful ocean tidal currents through a series of underwater turbines.

How is tidal energy generated?
The technology to generate electricity from tidal movement has advanced significantly in recent years, with major investment being made into researching and developing the most effective state-of-the-art tidal energy turbines. Energy is generated when water currents turn the blades of an underwater turbine, in much the same way as a windmill catches the breeze.  The process works by converting the kinetic energy of moving water directly to the mechanical shaft power, without interrupting the natural water flow.

How much electricity does a tidal turbine produce?
One turbine is forecast to produce enough energy to power between (300) and (430) homes each year.

What are the benefits of tidal energy?
Tidal energy has the potential to significantly contribute to the renewable energy market and reduce our reliance on non-renewable fossil fuels such as coal, oil and natural gas. Through harnessing the natural tidal water movement, clean energy can be created. Once installed tidal energy turbines are silent and out of sight located many metres below the ocean’s surface.

How reliable is tidal energy?
Tidal energy is expected to be one of the most reliable renewable energy forms available.  Twice a day, every day, the gravitational pull on earth produces powerful water currents and this in turn creates a unique opportunity for producing renewable energy. 

The potential for power generation by each individual turbine is far greater than that of wind energy. As an example, a tidal energy turbine rated to work in a flow between 2 to 3 metres per second (m/s) in seawater can typically access four times as much energy per rotor swept area as a similarly rated power wind turbine. The other major benefit of tidal energy is that power generation can be predicted years ahead.

Why do we need tidal energy?
Demand for energy in Australia is projected to increase by 50 per cent by 2020. Under the Mandatory Renewable Energy Target (MRET) established by the Australian Government, at least 20 per cent of Australia’s electricity supply is expected to be sourced from renewable sources.

Tidal energy is a clean form of energy that harnesses natural tidal flows with no greenhouse gas emissions. It is a reliable form of renewable energy that can be projected many years in advance.

What size are the turbines?
The turbines feature a rotor section that is approximately 15 metres in diameter. The gravity base is slighter larger than this to support the structure.

Is Australia on track with international technology and projects?
No. There is worldwide interest in tidal energy, as the world recognises the need to explore and generate energy from renewable sources and reduce greenhouse gas emissions.

A number of exciting tidal energy projects are being developed in Europe, Asia, the UK and Canada. Australia can’t afford to miss this opportunity and be part of the renewable energy revolution.

Environmental considerations

Will marine life be endangered by tidal turbines?
No. Tenax Energy is acutely aware of the importance of protecting marine life and is committed to using the most advanced technology based on both environmental and operational performance. Tenax Energy will meet and wherever possible exceed Australia’s stringent environmental regulations as well as the expectations of the wider community.

What are the environmental impacts of tidal energy?
Current tidal energy projects in operation or planned in New Zealand, Canada and Scotland have reported minimal impacts to the environment.

The Scottish Executive has commissioned a strategic environmental assessment of marine energy in Scottish waters, specifically to look at potential environmental impacts of various marine energy technologies including tidal energy. Their findings provide valuable advice on ways to identify environmental risk and important actions in mitigation.

Tenax Energy will undertake extensive environmental studies in conjunction with the respective State Governments and environmental authorities to assess any impact of tidal energy projects. This will include baseline studies of marine life in the area.

Tenax Energy has an uncompromising respect for our environment and is wholly committed to its protection.

How is the turbine secured to the ocean floor?
To secure the turbine to the ocean floor it will be supported by a gravity base. To protect the ocean floor and seabed, the gravity base has been specifically designed to allow for natural light to pass through. Most importantly, there is no need for any excavation for foundations as the gravity base will remain in place by virtue of its own weight.

Is Tenax Energy proposing an exclusion zone around the tidal energy projects?
No. The tidal energy projects being proposed by Tenax Energy are at a sufficient depth that they will not disrupt shipping activity. Tenax Energy is also in consultation with stakeholders at each of the respective sites to assess any impact that the project may have on other uses in the area.

Will you be able to see the turbines from the coast?
No. The turbines sit many metres beneath the oceans surface. The only activity that will be visible from the coast will be during the installation period and routine maintenance activity.

Tenax Energy is working with planning authorities and the local community in each area to ensure that there are minimal visual impacts from the connection to existing electricity infrastructure.

Community Consultation

How will Tenax Energy manage community and stakeholder consultation?
Tenax Energy is committed to consulting with all relevant and interested stakeholders and communities. As the projects progress we will be talking to and informing them about the project specifics. If you are interested to know more or have a query please contact Tenax Energy.

Project site selection

Where are the proposed projects for Tenax Energy?
There are very few places in the world that offer the unique velocity of tidal flows that can be harnessed to generate tidal energy which are located close to existing electricity transmission infrastructure. Tenax Energy has undertaken extensive research to identify the most appropriate locations for tidal energy generation and has selected sites in Victoria, Tasmania and the Northern Territory.

Why have these locations been chosen?
There are three factors that make these areas unique and ideal for generating green and clean tidal energy:

Investment

Can I invest in Tenax Energy’s tidal energy projects?
Tenax Energy is committed to producing sustainable, clean and reliable energy for the Australian market. Comprehensive business planning undertaken in preparation for this project has provided a clear path for Tenax Energy to realise these goals.

How do I find out more about this exciting investment opportunity?
To find out more about the exciting opportunities offered by Tenax Energy please contact Tenax Energy Director, Alan Major on 08 89417688 or click here to email.