Barcelona's solar energy regulations have moved the city to becoming an example of a sustainable city. Some of Barcelona's efforts include becoming the first European city to have a solar thermal ordinance and having one of the cleanest bus fleets in Europe.
To solve the problem of inequality, the mayor of Bogotá, Colombia turned to better buses and more bike lanes, Guevara-Stone writes. Can urban development done right develop a more egalitarian and sustainable city?
Fourteen percent of households on Native American reservations live without electricity. But several Native American reservations are now using renewable energy technology to access electricity and much needed income.
Many states want electric car manufacturer Tesla Motors to build a 'gigafactory' in their states. But in more conservative Texas, Governor Rick Perry is working hard to market itself toward Tesla Motors, writes Jesse Morris.
Education is important for the future of the world's energy challenges, writes Laurie Guevara-Stone. And today's children can learn through hands-on experience, according to a Purdue University study.
Owning a personal power plant could be the next big home appliance. Here is how the idea might not be that far-fetched.
A small California county has become the first in the state to produce more power from solar panels than it uses.
Sabana Grande, a small northern Nicaraguan town has leveraged solar power to transform a community once ravaged by war, Guevara-Stone writes.
Many islands are blessed with large amounts of sun, wind, and water, making renewable energy a promising solution, Guevara-Stone writes. One small island off the coast of Africa has embraced these resources, most notably through an innovative hybrid hydro-wind system.
Just as with organic supermarket produce, green power programs remain a niche market, Bronski writes. But the ability for consumers to pay a premium for 'organic electricity' is increasingly making inroads to mainstream markets.
Rather than lament renewable energy's disruption of the traditional utility business model, Lovins writes, we should help progressive utilities and disruptive upstarts shape a new electricity system powered increasingly by clean, distributed renewables.
Denton, Texas is known for its festivals and eclectic music scene, Guevara-Stone writes, but the bustling community 30 miles northwest of Dallas is also a leader in clean energy, boasting more wind power per capita than any other city in the nation.
Not all kilowatt-hours of electricity are created equal, Bronski writes, but most customers consume them as if they are. That's changing as consumers demand more information about how, where, and when their electricity is generated.
Clean energy developments helped bring us closer to a clean, prosperous, and secure energy future in 2013, Guevara-Stone writes. Here's the Rocky Mountain Institute's pick for top 10 clean energy developments of 2013.
Two decades ago, Varese Ligure, Italy was fading away due to a lack of jobs, industry and essential services, Guevara-Stone writes. Today, it's a charming town with bustling markets and thriving tourism. How wind turbines and solar panels helped it get there.
Many consumers still can’t afford the steep sticker price of home solar, even if it offers the promise of low-cost, clean renewable energy in the long term. But innovative third-party financing is changing how solar panels are bought and sold.
As the use of intermittent energy sources like sun and wind continues to rise, battery storage is increasingly entering the conversation about the nation's electrical grid. A new energy storage mandate in California is pushing the issue further.
The growth of the US solar energy industry is impressive, Calhoun and Morris write, but so-called 'soft costs' keep solar prices high in the US, compared to countries like Germany, a champion of solar development.
China is facing pollution challenges today similar to what Los Angeles faced during the 1980s, a problem that energy efficiency helped mitigate. In China, combining cleaner heating fuels with better-insulated buildings is one concrete measure that would support cleaner skies in northern China and beyond, Stranger writes.
Major companies more than ever before are driving the transition to renewable energy, but that effort is not without hurdles. Seif and Baker offer lessons learned from overcoming the challenges of making big business go green.