About us

Key Energy

About Us


We organise, operate and optimise turn-key Mechanical Battery Storage Systems in Australia.

A 100% Clean Energy Future


The electricity and renewable energy industry is at an inflection point. Durable, reliable and cheap energy storage is the key to unlocking more renewable energy installation. But in the words of Bill Gates “It is incredibly hard to store energy”. Our vision is to unlock a 100% clean energy future – where our whole electricity grid is provided by renewable, emissions free energy. We’ll help achieve this by providing our range of smart energy storage solutions to support renewable energy projects and help them improve their return on investment.



2018Founded in 2018.
2019Accepted into EnergyLab’s Pre-Acceleration Program.
Accepted into EnergyLab’s Acceleration Program.
2020Received NSW MVP grant.
Graduated from EnergyLab’s Acceleration Program.
Received City of Sydney Innovation Grant for Feasibility Studies.
2021The Armidale School (High School) – First Commercial On-grid Hybrid Mechanical Battery System, and first Australian multi-unit site commissioned
Received City of Sydney Environmental Innovation Grant Demonstration.
2022Received the competitive Accelerating Commercialisation Grant from the Department of Industry, Science, Energy and Resources
APA Group – World-first Commercial Off-grid Long Duration Flywheel Project Commissioned
Sydney Test Site – World-first above ground long duration M32 flywheel
2023First Off-grid Residential Mechanical Battery System Commissioned
First On-grid Residential Mechanical Battery System Commissioned
Received the Australian Research Council Linkage Project Grant in collaboration with UTS
2024First Off-grid Eco-Accommodation Commissioned
Added Deye inverter brand to the supported inverter list
Coming Soon – Market Pricing and Arbitrage platform launch


Meet the Team


Howard Leong​​ – General Manager​

  • Certified Chartered Accountant (CA) with the Institute of Chartered Accountants Australian and New Zealand
  • Member of Australian Institute of Company Directors (MAICD)
  • Bachelor of Accounting & Finance (Distinction), University of NSW
More about Howard

Howard brings over 18 years experience in helping large organisations solve their most complex problems from strategy through to execution to Key Energy. He previously worked in PwC’s strategy consulting division, Strategy&, in the energy industry. He has helped large gen-tailers to form their strategy based on analysis of market trends and competitive strengths, with a particular focus on the energy storage market. Prior to that he attained and practised as a Chartered Accountant with PricewaterhouseCoopers (PwC). He has previous experience in data analytics, blockchain product management, business case development, entrepreneurship, recruitment, team leadership, commercial acumen and more.

Seth Williams​​​ – Engineer/Business Development

  • Electrical Engineering Honours At University of Newcastle

Seth brings over 6 years experience in renewable energy systems, from installing to designing, both in Australia and India. He has an entrepreneurial background, having started his own carbon credit aggregating venture. With over 3 years experience in sales and business development in the energy sector, he is ready to help you get the right solution.

Anson Antony​​​ – Systems Engineer

  • Mechatronic Engineering At University Technology Sydney

Anson began his career as an intern with Key Energy’s early days from 2019 and now brings over 4 years experience in control system, communication and networks, and software programming.

Toby Patterson​​​ – Utility Project Development

  • Graduate Diploma in Energy and Resources Management, University College London (UCL)
  • Bachelor of Science – Geoscience/ Physics (Distinction), University of QLD
  • Bachelor of Commerce – Finance (Distinction), University of QLD
  • Committee Member – CEC: Utility PV Directorate / Energy Storage Directorate
More about Toby

Toby brings over 10 years of global experience in energy across renewable energy, utility and oil and gas.
He is currently the General Manager – Project Development at Key Energy and also serves as Director of Business Development at Zero Mass Water.
He has previous experience and skills in developing utility scale solar farms and scaling energy businesses. His previous companies include ENEL Green Power, NEXTracker, Schlumberger, Origin Energy, Sundrop Farms. 


Installers and Resellers


Are you a solar / battery qualified installer? Do you care about the long term sustainable relationship with your customers and not just a transactional one-off sale?

Or maybe you are an energy advisor looking to get involved in unlocking a clean energy transition for you or your customers?

We are looking for like-minded installers and agents/resellers of our solution. Contact us today using the enquiry form and we will be in touch to discuss further.