Gary Hagerty, P.Eng., MBA

Partner, Madstone Consulting Gary Hagerty, P. Eng., MBA, Partner since 2008. Gary brings over 20 years of energy industry experience from working in various senior trading and leadership roles for Canadian and US energy companies throughout the energy value chain including utilities, pipelines, midstream, engineering, transmission and distribution, retail, commercial & industrial, regulatory, and trading & marketing. Gary has experience in engineering, construction, commissioning, project management, trading, marketing, structured product development, negotiations, asset acquisition and disposition, Joint Ventures, business development, project development, modeling, deal evaluation, and strategic planning, with expertise in all aspects of running a power business. Gary also has related pipelines, oil & gas, and midstream infrastructure experience related to power development, management, and monetization. Since 2008, Gary has provided consulting services to the energy industry in energy trading, marketing, risk management, asset acquisition & disposition, asset strategy, construction, commissioning optimization, strategy, development of front end feasibility proposals through to their engineering design and construction, business modelling and asset evaluations, third party and joint venture negotiations, and related planning & operations management. Contact me at

Sherry MacDonald, MBA, CIA

Partner, Madstone Consulting Sherry MacDonald, B.Comm., MBA, CIA, Partner of Madstone Consulting since 2008. Sherry brings over 20 years of energy commodity experience in power, gas, oil & liquids. Sherry has excelled in various senior leadership roles working and consulting for numerous Canadian and multi-national companies across multiple commodities throughout the energy value chain. This experience includes utilities, pipelines, midstream, upstream, distribution, retail, commercial, industrial, trading, and marketing. Sherry has experience in multi-million dollar project management, systems selection & implementation, business process improvement, trading, marketing, structured product development, negotiations, asset acquisition & disposition, analytics & reporting, business development, modelling & deal valuation, strategic planning, multi-billion dollar portfolio optimization, capital budgeting & modelling, internal controls & corporate governance, revenue management & pricing, and network planning. Sherry has expertise in all aspects of the energy business: front, middle, and back office. Since 2008, Sherry has provided consulting services to the energy industry in several areas including energy trading, marketing, and risk management (market, credit, and enterprise), systems selection and implementation, policy and procedure development, asset acquisition and disposition, asset strategy & optimization, business modelling & asset valuation, data, analytics, and reporting. Since 2016 Sherry has provided consulting services in retail & wholesale revenue management, pricing, & network planning. Sherry combines her experience in the airline and retail customer product industries with her energy value chain and portfolio optimization experience to develop customized leading edge revenue management, pricing, and network planning customer solutions. Contact me at

Chris Allen

Practice Lead, Risk Advisory and Systems Implementation Chris brings over 20 years of experience leveraging his formal education in Computer Science and Mathematics to provide high impact solutions within the energy industry. Chris has excelled as part of both front and middle office teams in an energy marketing and trading environment including natural gas, power, and crude oil. Chris has experience in selecting, implementing, and working with end-to-end energy trading and risk management systems from a number of leading software vendors. This ETRM system experience spans all major systems and includes meeting the requirements of front, middle, and back office teams across multiple commodities and with a focus on aligning and optimizing business processes with the available system capabilities. Where ETRM systems can sometimes leave a functional gap, Chris’ mix of technical skills and industry experience allow him to quickly devise effective and efficient customized solutions. Contact me at