CIRCUIT ENERGY
About Circuit Energy
We combine deep technical market knowledge with practical commercial experience to deliver solutions that are strategic, agile, and commercially grounded. Whether supporting established market participants or emerging renewable ventures, our focus remains the same: helping clients navigate complexity, manage risk, and maximise opportunity in Australia’s rapidly transforming energy market.
Our Mission
At the forefront of Australia’s evolving energy landscape, our team brings decades of hands-on experience across the Australian National Electricity Market (NEM), wholesale trading, portfolio optimisation, structured energy products, and renewable market strategy.
We partner with generators, retailers, developers, investors, and industrial energy users to deliver commercially intelligent solutions that balance risk, optimise asset performance, and unlock long-term value. Our expertise spans traditional generation, renewable energy, environmental products, battery storage, biofuels, and complex derivative structures.
With deep industry relationships and a practical understanding of both market operations and strategic commercial outcomes, we provide trusted advisory and execution support across the full energy value chain. Together, our leadership combines more than 50 years of experience navigating Australia’s dynamic energy markets and supporting some of the sector’s most significant transactions, trading portfolios, and infrastructure developments.
Our Team
Areas of Expertise
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Wholesale Electricity Trading & Dispatch
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Portfolio Optimisation & Risk Management
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Structured Derivatives & OTC Markets
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Power Purchase Agreements (PPAs)
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Retail Energy Market Development
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Energy Market Compliance & Governance
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Generation Asset Commercialisation
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Investor & Infrastructure Advisory
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NEM Trading Strategy & Operations
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Renewable & Thermal Generation Markets
Areas of Expertise
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Energy Deal Origination & Structuring
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Renewable Energy & Storage Markets
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PPAs & Structured Hedging Solutions
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Environmental & Carbon Markets
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Biofuels & Biomass Offtake Agreements
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Commodity Trading & Portfolio Strategy
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Counterparty Negotiation & ISDA Documentation
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Risk Management & Regulatory Compliance
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Commercial Strategy for Energy Projects
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Retail & Industrial Energy Solutions
Timothy Crowley is a highly respected energy markets executive with more than 30 years of experience in the Australian National Electricity Market.
His expertise spans wholesale electricity trading, portfolio optimisation, retail energy operations, derivative structuring, and strategic investor advisory.
Throughout his career, Tim has played a significant role in the development, optimisation, and commercial management of major Australian generation assets including Tarong North Power Station, Braemar Gas generation units, and the Starfish Hill and Mt Millar Wind Farms. He has successfully originated and negotiated complex derivative contracts, power purchase agreements (PPAs), fuel supply arrangements, and over-the-counter (OTC) trading frameworks.
His leadership experience includes senior portfolio and trading roles with InterGen Australia, Tarong Energy, Energex, and Circuit Energy, where he has advised on risk frameworks, regulatory compliance, market registration, retail establishment, and generation asset optimisation.
Tim has also worked extensively with international investors, joint venture partners, and infrastructure stakeholders across Australia’s energy sector.
Scott Riethmuller is an accomplished energy markets professional with more than 20 years of experience specialising in deal origination, structured contracting, commodities trading, renewable energy markets, and portfolio optimisation within the Australian National Electricity Market.
Recognised nationally as the Reuters Energy Bank Limited National Electricity Market Trader of the Year in both 2013 and 2015, Scott has built a reputation for identifying innovative commercial opportunities and delivering sophisticated energy and commodity market solutions. His experience spans electricity, gas, environmental products, biofuels, biomass, carbon markets, and renewable storage projects.
Scott has held senior leadership and trading positions across consulting, proprietary trading, and integrated energy portfolio management, including roles with Stanwell Corporation and Vivienne Court Trading.
Scott has successfully originated and negotiated complex PPAs, hedging structures, environmental products, and offtake agreements while leading large-scale trading operations and developing new commercial pathways for renewable and sustainable energy projects.