by Parq
About Walker
Walker Ryan is a climate-tech entrepreneur focused on driving industrial decarbonization through better data. As the founder and CEO of Parq, he helps manufacturers generate high-quality, third-party–verified carbon disclosures at scale—accelerating a traditionally slow and expensive process. Before starting Parq, Walker led over $200 million in sustainability-focused investments as VP of Strategy & Growth at ReStream Solutions, following earlier experience in investment banking at Deutsche Bank. He brings a rare mix of capital markets expertise and hands-on sustainability knowledge to tackling the infrastructure of industrial emissions.
Recent Articles
Your EPD Can Pay Dividends
You spent months corralling plant data, then celebrated when the verified document arrived. Now the file sits in a shared drive while your sales team keeps pitching on price. An EPD is more than proof of good practice. Treat it as a revenue lever, and the math starts to look interesting.
Digital Product Passports and the New EU Ecodesign Rulebook
A quiet deadline is racing toward every factory gate in Europe. The Ecodesign for Sustainable Products Regulation (ESPR) took effect on 18 July 2024 and, with it, the Digital Product Passport (DPP) became real law instead of buzzy concept. Brussels has now set the clock: product groups on the first ESPR Working Plan, published April 2025, will need passports first, and all physical goods sold in the EU are expected to carry one by 2030. Manufacturers who rely on Environmental Product Declarations (EPDs) today have an inside track, but only if they tighten their data house now.
ISO 14025: The Passport Behind Credible EPDs
A nutrition label is only useful when everyone trusts what is on the back of the box. The same applies to an Environmental Product Declaration. ISO 14025 sets the rules that keep every EPD honest, comparable, and accepted on job sites where a single missing credential can erase you from the bid list overnight.