Brian O’Kennedy

Managing Director

Brian O’Kennedy is CEO of Clearstream Solutions, a leading independent carbon management and corporate sustainability consultancy which he founded in 2009. Brian has over 20 years’ leadership experience in global supply chain management and procurement, particularly in the areas of IT, Media, Print and Packaging.  Brian has served as Chair of the CDP Ireland Network, the global carbon reporting program, and is also a member of Steering Committee of the global Responsible Sourcing standard, Verego SRS.  He has a degree in Economics from Trinity College, a Certificate in Sustainable Management from BSI Group and is currently studying the Circular Economy at TU Delft.

Gavin Whitaker



Gavin Whitaker is Consulting Director at Clearstream Solutions and has held key senior management roles in Marketing, Sales and Operations over the past 20 years. He has trained as a Carbon Consultant according to the ISO 14064 Standard and has extensive experience in organizational carbon footprinting. Gavin has a BA from UCC in Economics & Sociology, a MA in Marketing from University of Ulster, has studied International Business in Harvard University, CSA ISO 14064-1 Measuring an Organisations Carbon Footprint and CSA ISO 14064 -2 Reducing an Organisations Environmental Impact.

Che McGann

Sustainability Reporting Project Manager

Ché is an engineer by training and spent the first part of her career working on process development projects in medical device manufacturing environments. Following a passion for sustainability, she completed an MSc in Sustainable Development at TU Dublin, and now works with organisations on their corporate sustainability strategy & communication projects. She has previously worked for Sustainable Nation Ireland, Boston Scientific, Fisher and Paykel Healthcare and FT Technologies.

Grainne McIvor

Carbon Program Manager

Gráinne is an Environmental Science graduate with both research and practical experience in organisational carbon footprinting. Following graduation, she was employed in Dublin City University’s Sustainability Office to assist in university management of emissions, waste, water, transport and biodiversity. DCU became the first university globally to submit to CDP’s climate change programme during her time there. She holds 3-002-RA: Verification of Greenhouse Gas Statements (Reasonable Assurance) certification.


Niall Collins

Circular Economy & LCA Program Manager

Niall is a Biosystems graduate with a Masters in Sustainable Energy & Green Technologies from UCD. He has both research and practical experience in life-cycle analysis and circular economy principles. His MSc thesis focused on the environmental and economic analysis of a seaweed farm in Ireland through a cradle to gate life cycle assessment using Gabi LCA software. He has also worked with Sway, a company who are looking to develop a competitive food-safe bioplastic.