KVNF Regional Newscast: October 28, 2021

Community Rebuilds is a nonprofit that builds affordable and efficient housing – suitable for Moab’s very hot summers and very cold winters - while educating natural builders in the process. Anyone who is interested in construction, regardless of their previous experience, is welcome to intern at their sites to learn about natural building processes. The organization has built 52 strawbale homes since they started, a healthy and natural material that costs about half of what other new construction is per square foot. The program requires homeowners to volunteer about 20 hours a week building homes.

Inspired by the Dutch concept of “Energiesprong,” or “energy jump,” a developer in France retrofitted a group of townhouses for social housing to be more environmentally friendly. They installed polyurethane facades to avoid heat loss and solar panels on the roof. Upgrading the units to be more green cost more than a conventional retrofit, but over time, energy bills were cut in half. These green retrofits are being implemented in towns around the world and could be a model for developers that want to reduce their carbon footprints.

An apartment complex in Utah includes a solar battery in every apartment allowing the resident, power utility, and building developer to save costs for generating electricity. Through a unique partnership, the power systems can provide 12.6 megawatts of power for the building, which translates into residents saving up to 40 percent on the energy bills. This setup might not be easy to scale, but the developer plans to expand the model in other states.

Harnessing body heat provides energy-saving heating to commercial and residential buildings. The Stockholm Central station in Sweden and the Mall of America in Minnesota both capture body warmth to provide some of the buildings' heat. Each has over 100,000 daily visitors during non-coronavirus times, generating substantial heat that can be captured by energy-efficient construction. Body heat is also utilized in residential spaces, where thermal insulation helps keep the warmth inside. Using body heat requires energy-efficient building materials and generally cannot provide all of a building's heating needs.

By piloting a Dutch initiative to make homes more energy efficient with new windows and solar panels in the United Kingdom, tenants are seeing their monthly energy bills decrease by almost half. More than 150 social housing homes in Nottingham are testing the “Energiesprong” approach, which has already seen success in the Netherlands.

An economic shift to renewable energy could take decades, but thanks to rapidly evolving disruptive technologies, dropping prices of solar and wind power sources, and increasing market demand for green business, the new age of renewable energy could encompass the world economy much more quickly.

In Stockholm, old Christmas trees are being converted into biochar. When integrated into the city's highly-efficient power grid, the project has been wildly successful--not only in improving soil, but also in retaining groundwater, greening the city, and lowering carbon emissions. For this reason, officials as far away as California have been eying the plan with interest.

Local real estate developer Lodha Group created Palava City, a 5,000-acre experimental community using creative green building techniques and layout initiatives, supporting its mission of creating a net-zero community. The city is being developed in phases on a community level, without the restrictions of local government, and plans to house about two million residents. Those already living in the community praise its energy efficiency and walkability compared to nearby cities.

A pilot energy retrofit project in Florida has shown that these upgrades for homeowners ultimately saves them money and energy, and can be made accessible to people from all types of socioeconomic backgrounds. This private-public partnership retrofitted 56 single-family homes, some with “shallow” retrofits like LED lightbulbs and smart plugs and some with “phased deep” retrofits like energy-efficient windows and air conditioners. The program showed that all participants saved energy and could be scaled to other states.

In Paris, about 7,500 buildings are heated using geothermal energy, a cost-saving and carbon neutral energy source. Water is drawn from deep below ground at a central location and heated by the earth, and then sent via underground pipes to individual buildings. The Bagneux and Chatillon district has scaled up the system, providing heat to over 40,000 people. Districts created joint ventures to reduce construction costs and residents do not notice the energy source shift because when the temperature drops to a point where geothermal energy is not viable, gas boilers automatically keeps the heat flowing.