A Florida Study Showed How to Save Energy at Home. Why Aren't More Cities and States Following Suit?

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.

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.

In a collaborative effort between developers, power companies, and the government, a new apartment complex in Utah will be almost entirely powered by solar energy. The complex, developed by Wasatch Premier Communities, will work with Rocky Mountain Power to determine how to integrate such technology into the region’s electricity grid. This kind of development is gaining ground in Utah, and those in the industry hope to educate others of the benefits of going electric.

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.

Micro-hydro projects in the United States have become much more accessible and more financially viable since Congress passed a law in 2013 making it easier for small hydroelectric projects to get federal approval. Specifically, water treatment plants that can retrofit their systems to generate electricity are an excellent energy opportunity. The plant in Grand Lake now produces more electricity than it consumes.

Solar power is an important renewable energy in Germany, but when the sun is out, it can overpower the grid. Likewise, when the sun is not out, the reception of solar power decreases. Germany has piloted battery installations that store solar energy for use when the sunlight is not plentiful and has successfully incentivized citizens to use them to lower costs.

Rahr Malting, a brewery in Shakopee, MN, has found a creative way to sustainably address their energy needs. The company partners with the Mdewakanton Sioux Community to use waste barley hulls from the malting factory to generate electricity for their facilities, selling excess power to the public grid while the waste heat sprouts the malt to make beer.

A collaborative partnership among local and national organizations made it possible to install solar panels on 10 Greensboro homes for free. Because of this effort, many low-income families have seen a significant decrease in their energy bills and an increase in value of their homes. Although convincing people to install the panels was a challenge, organizers are now figuring out how to scale the initiative and make it sustainable in the longterm.

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.