Creating “Better Buildings” With Solar Energy

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.

Madison Equities is investing in significant efficiency upgrades to a number of buildings in downtown St. Paul, overhauling their energy systems in an upgrade driven in part by tenants' interest in energy efficiency and in part as a major effort to shrink the city's carbon footprint and save on long-term operating costs. The the timeline for the St. Paul project was impressive and shows what's possible, not just for the planet but for a company's bottom line.

Climeworks is focusing on pulling carbon dioxide directly out of the air to store or reuse in some capacity as a way to lower global greenhouse gas emissions. The Swiss company has 16 plants around Europe, with their biggest one in Switzerland that removes 900 tons of carbon dioxide a year that is then sold to Coca-Cola Co. to put in soft drinks or to local industrial greenhouses for plant growth. Scaling the operations to capture more carbon is costly, but the startup recently raised $76 million from investors.

To reduce carbon usage in electric grids, companies around the world have turned to new technologies that store wind energy that can be converted to electricity. One such company called Hydrostor, based in Ontario, Canada, traps compressed air in underground caverns to store energy without the use of fossil fuels.

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 cryptocurrency mining company in Texas called Layer1 can power down its data-processing centers and sell its unused electricity back to the power grid. Instead of passively consuming energy, they are able to utilize batteries, smart meters, and artificial intelligence software to use more renewable energy and, at the same time, make a profit. While scaling this response can be difficult due to restrictions from utility companies on how consumers get their energy, Layer1 estimates it will save up to $6.7 million annually by cutting production for 30 minutes during some of the hottest days in the summer.

Dozens of states across the US are adopting programs that offer solar power for low-income communities in order to cut down on their utility costs and provide renewable energy that they previously would not have had access to. Some of these programs also incorporate other social goals into their programs, such as offering job training or developing sites of backup energy should there an outage. Solar development is currently one of the fastest growing industries in the US, and analysts predict that the nation will be able to hold over 2,000 megawatts of solar capacity this year alone.

Setting the bar high for environmental sustainability can encourage innovation and experimentation. Developers of Paris’ new Clichy-Batignolles eco-district are reducing the neighborhood’s carbon footprint in nearly every way imaginable. Solar panels and vegetation cover the energy-efficient buildings, the water table under the 10-hectare (25-acre) park provides geothermal heating, deliveries are directed to a central drop-off site, and much more.

Repurposing contaminated sites for clean energy production may not sound like a common tactic to take, but Massachusetts has found a way to be highly successful at it. In fact, out of over 250 renewable energy installations across the United States, Massachusetts accounts for 40 percent of them. The state attributes this success to a combination of an enhanced ease of the bureaucratic process and opportunities for revenue stimulation for towns.

Iceland, hit by the oil crises of the 1970s, turned to geothermal energy - and they haven't turned back. The island is now powered by 100% renewable energy, and they are taking it one step more, looking to further cut emissions using a unique carbon capture system called CarbFix. It is being pioneered at the Hellsheidi geothermal power plant in western Iceland.