Newsletter Sign-Up

Sign up to our eNewsletter to receive our latest show updates

* All fields are mandatory

  • This field is for validation purposes and should be left unchanged.


Interview: Mark Leslie, AES Energy Storage

Posted on May 10th, 2017 in News

Making the most of the opportunities presented by a rapidly evolving energy market requires flexibility and cooperation from industry participants, as well as a willingness to learn and think long-term.

Ahead of his presentation at the 2017 Australian Energy Storage Conference, we talked to Mark Leslie, Asia Market Leader at AES Energy Storage, about large-scale storage projects, transferring knowledge gained in overseas markets to an Australian context, and how we can create a sustainable market for energy storage.

Building a sustainable storage market long-term

Mark Leslie has been working in energy markets in “various capacities and geographies” for more than 15 years.

“While the market mechanisms are often invisible to most consumers, it is abundantly clear that energy is a key factor in driving a person’s quality of life and opportunity in society,” he says.

In his current role, he is Asia Market Leader for AES Energy Storage, a leader in commercial energy storage solutions

According to Mr Leslie, AES Energy Storage has been deploying utility-scale energy storage into electric grids for nearly a decade and has delivered the largest global fleet of battery-based storage assets currently in service. Recently, the company also built both the single largest lithium-ion energy storage array in the world, a 30MW array in Escondido, California, and a second smaller array totalling 7.5MW in El Cajon, in just six months.

“These deployments are helping to maximise the utilisation of renewable generation, as well as providing the grid stability, through frequency and voltage support,” he says.

Transferring global experience to an Australian context

Mr Leslie believes that by looking at lessons learned during such innovative projects overseas, and by observing the effects energy storage has had on other countries’ energy markets, stakeholders in Australia can gain valuable knowledge to help smooth our own energy market transition.

“Advanced energy storage is new to most governments, network operators, transmission and distribution operators, and power companies. However, it is not new everywhere, as AES has been operating projects for nearly a decade and works closely with stakeholders to ensure those lessons are transferred across geographies,” he says.

“While there are market-specific conditions that make direct ‘copy and paste’ of policies impractical, we work closely with different markets to study the paths each has taken and transfer lessons learned in one market to others, helping to ensure their success.

“Australia and the NEM are at a critical juncture where strategy, direction, and policies can help drive grid-scale energy storage adoption and enable the NEM to be the global model other markets follow.”

Avoiding the boom and bust

Key to the success of grid-scale energy storage integration and wider energy market transition is a view to the long-term.

Mr Leslie’s extensive experience has instilled in him a passion to create a sustainable market for energy storage in Australia, as opposed to one that follows in the steps of the boom and bust markets experienced in certain parts of the US and UK.

“Some of the markets outside of Australia began with strong forethought and good intentions,” he says

“However, sometimes as markets evolve, market strategists secure short-term gains but don’t think about long-term market stability and reliability. The parties driving Australia’s transformation to a cleaner, affordable and reliable future should seek to learn from other markets’ choices and outcomes.”

Mr Leslie believes that successfully transforming the market within Australia will require energy storage to be part of the main planning toolkit for all generation, transmission and distribution sectors. Additionally, Australia will need to modify market mechanisms.

“The market needs to have longer-term pricing signals to drive high-quality, long-term infrastructure investment such as energy storage.

“Providing long-term certainty through contracted capacity for companies using energy storage maximises system benefits and enables the development of a sustainable market

According to Mr Leslie, also key to success will be flexibility, adaptability and quality.
“As the market transition begins to mature, energy storage assets will need to adapt to continuously meet changing needs and improve market reliability. Only higher-quality, longer-term energy storage infrastructure projects will have the flexibility required to continuously evolve to new dispatch patterns, which will provide the market with higher levels of reliability at lower costs,” he says.

Mark Leslie explored these issues in further detail in his presentation ‘Lessons Learned from the Rapid Deployment of the Largest Energy Storage Array to Solve Grid Reliability in Southern California’ at the 2017 Australian Energy Storage Conference.