Sustainability

Impacts of Energy Upgrades: A Whole-Building Performance Evaluation Framework

Energy upgrades to existing buildings represent one of the most cost-effective pathways to reducing operational carbon, lowering utility bills, and improving occupant comfort. Yet as the team at HVAC systems and healthy buildings design strategies consistently demonstrate, the impacts of individual energy measures cannot be evaluated in isolation. A whole-building performance approach ensures that upgrades […]

Evaluating Siding Materials Through a Green Building Lens

Choosing siding for a home involves more than picking a color or texture. For environmentally conscious homeowners, the question of which cladding material has the lowest ecological footprint demands a careful look at the full lifecycle of each option. The reality is that assessing the environmental impact of siding choices is a complex task with

Building Green When Banks Fall Short: Navigating Net-Zero Financing in Construction

The global construction industry stands at a critical crossroads. On one hand, buildings account for nearly 40 percent of energy-related carbon emissions worldwide, making the sector indispensable to any credible climate strategy. On the other hand, the financial pathways to decarbonize construction remain uncertain, as new research reveals that major banks are falling short on

Carbon Emissions in New Production Homes: Lessons from the NREL Case Study

The United States has set ambitious decarbonization goals by 2050, and the homebuilding industry faces a critical question: what role will it play in meeting these targets? With nearly 1.6 million housing units constructed each year across the country, the decisions builders make today will determine both the upfront carbon spent during construction and the

How Solar Decathlon Winners Proved the Power of Passivhaus Design

The 2009 Solar Decathlon marked a turning point in the history of energy efficient home design. For the first time, the two top finishers in the United States Department of Energy competition shared a defining feature: both were modeled to the rigorous Passivhaus standard. Team Germany, representing Technische Universitat Darmstadt, claimed first place with its

Five Ways to Lower Household Carbon Emissions Effectively

The building sector contributes significantly to global greenhouse gas emissions, and homeowners looking to reduce their environmental footprint often struggle to separate meaningful changes from popular but less effective measures. Reducing household carbon emissions requires understanding two distinct concepts: operational carbon from daily energy use and embodied carbon, which refers to the emissions released during

How Wind Power Generation and Green Cement Production Are Building a Cleaner Future

The global push to decarbonize infrastructure has brought two seemingly separate industries into alignment: renewable energy generation and low-carbon cement production. Offshore wind farms require enormous quantities of concrete for turbine foundations, substation platforms, and transmission infrastructure. At the same time, cement manufacturing remains one of the most carbon-intensive industrial processes on the planet. A

The Green Blocks Approach: Transforming Home Performance One Neighborhood at a Time

Home efficiency improvements have long been pursued on a house-by-house basis, with individual homeowners navigating assessments, contractor bids, and financing on their own. This fragmented approach often produces slow adoption rates and missed opportunities for economies of scale. The Green Blocks Project, a pilot program developed by the Environmental Outreach and Stewardship Alliance in Seattle,

Solar Thermal Systems: Efficiency, Applications, and Role in Modern Buildings

Solar thermal technology has long been a cornerstone of renewable energy for buildings, providing an efficient method for converting sunlight directly into usable heat. While the rapid decline in photovoltaic (PV) panel costs has led some to declare solar thermal obsolete, solar thermal systems continue to offer distinct advantages for water heating and space heating.