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How to Power 100 Percent of the World's Electricity by Solar
A new report released on the sidelines of the World Future Energy Summit today, shows that even if all electricity is to be generated through renewable energy (RE) sources, and with solar photovoltaics (PV) alone, it would take up only an insignificant amount of total land area, contrary to common perception.
The report, Solar PV Atlas: solar power in harmony with nature, shows through seven cases—six countries and one region—less than 1 percent of the total land mass would be required to meet 100 percent of projected electricity demand in 2050, if generating electricity only with solar PV .
World Wildlife Fund (WWF) teamed up with First Solar, 3TIER and Fresh Generation to develop the report. It looks at Indonesia, Madagascar, Mexico, Morocco, South Africa, Turkey and the Indian state of Madhya Pradesh.
The regions represent diverse geographies, demographics, natural environments, economies and political structures. They receive different but good average levels of sunshine, and all show vast potential for widespread development of solar PV, a well-established, commercially available and reliable technology today.
The report illustrates that PV technology, when well-planned, does not conflict with conservation goals and clarifies that no country or region must choose between solar PV and space for humans and nature.
"Research has found that PV power plants provide considerable environmental benefits, including a low carbon footprint and a short energy pay-back time. Replacing existing grid electricity with PV arrays significantly reduces greenhouse gas and heavy metal emissions as well water usage,” says Lettemieke Mulder, First Solar vice president for sustainability.
This new report supports WWF’s vision of 100 perecent RE by 2050. “We are actively promoting investments and measures in renewable energy technologies that help to make this happen,” according to Jean-Philippe Denruyter, WWF’s manager Global Renewable Energy Policy.
“As climate change increasingly threatens people and the natural world, it is more important than ever to work for the rapid and wide-scale adoption of well sited, responsibly operated renewable energy power facilities. Environmental protection and renewable energy can and are developing in parallel,” says Samantha Smith, leader of the WWF’s Global Climate & Energy Initiative.
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In Long Beach, California, some electric buses can charge along their route without cords or wires.
When a bus reaches the Pine Avenue station, it parks over a special charging pad. While passengers get on and off, the charger transfers energy to a receiver on the bottom of the bus.
EPA Watchdog: White House Blocked Part of Truck Pollution Investigation, Caused Lack of Public Information
The Trump administration pushed through an exemption to clean air rules, effectively freeing heavy polluting, super-cargo trucks from following clean air rules. It rushed the rule without conducting a federally mandated study on how it would impact public health, especially children, said the Environmental Protection Agency (EPA) Inspector General Charles J. Sheehan in a report released yesterday, as the AP reported.
A time-restricted eating plan provides a new way to fight obesity and metabolic diseases that affect millions of people worldwide. RossHelen / iStock / Getty Images Plus
By Satchin Panda and Pam Taub
People with obesity, high blood sugar, high blood pressure or high cholesterol are often advised to eat less and move more, but our new research suggests there is now another simple tool to fight off these diseases: restricting your eating time to a daily 10-hour window.
By Ashutosh Pandey
H&M's flagship store at the Sergels Torg square in Stockholm is back in business after a months-long refurbishment. But it's not exactly business as usual here.