Transparency is the foundation for making informed decisions about the products we specify. The AEC industry is familiar with sustainability goals related to energy efficiency, but holistic discussions related to material goals across the entire team are still rare. Large strides have been made in interior product disclosure, but much less so for building envelope, MEP  and lighting systems. Without transparency our ability to quantitatively convey the magnitude of decisions made across the project team, and track progress as the design progresses, is limited.

The virtual power plant - aggregated, behind-the-meter solar, energy storage, and building loads dispatched in concert to meet grid needs - is a new model that has been pioneered in New England and is now being adopted by forward-looking utilities and policymakers across the country. This session will explain why the virtual power plant is the future of energy storage, how states can create virtual power plants using existing programs and budgets, and why this is an important new paradigm that will benefit customers and communities.

This session will share insights from three research projects focused on greenhouse gas impacts of efficiency-related measures. How does the choice of insulation materials in new construction affect the building’s carbon footprint? What do five years of weatherization data tell us about GHG impacts of insulating existing buildings? What is the lifecycle carbon impact of using heat pumps to offset fossil fuel boiler heat when considering the electric grid, embodied carbon of new heat pumps, and heat pump fugitive emissions from refrigerant leaks? 

This session details the design and construction challenges inherent in a net zero energy remodel and addition to a modest single family residence in Arlington, Massachusetts, completed in winter 2021. The project team sought practical, low cost, and reproducible solutions to meet project goals of net zero energy, minimizing embodied carbon, and electrification. We aspire to broaden the toolset of owners, designers, and builders by sharing our approaches to permit approval, structural design, building envelope, window specification and installation, and HVAC.