Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei




Reaching 100 renewable

Block_Island_ _Google_MapsThe kinds of energy policies we'll all have to adopt in the coming decades are already on display in New England.

The region barely uses any coal, and the six states there are embracing renewables like it's 2050.

In 2014 (), Rhode Island and Vermont were the only two states in the US that didn't use any coal at all.

That makes Rhode Island the most logical place for the nation's first offshore wind farm, called Block Island Wind Farm.

Block Island's five massive turbines should be fully installed by the end of August and go online by November. The wind farm will generate 30 megawatts of energy — enough to power every home on Block Island.

Steady, reliable winds off America's coasts could provide substantially more energy than turbines located on land. The expensive land is dotted with wealthy homes, too, though, which is one reason why offshore wind farms haven't already opened stateside.

Block Island Wind Farm off the coast of Rhode Island. Deepwater Wind/GE While it's a first for the US, the wind farm is just the next step in Rhode Island's impressive clean energy policies.

"I'm a lifelong Rhode Islander of 37 years, and I am not aware of any point in my lifetime when we've had coal generation," Nick Ucci, chief of staff for the Rhode Island Office of Energy Resources, told Business Insider in April. "Our in-state generation is 98% fired by natural gas, and of course we have a growing portfolio of renewables — including the nation's first offshore wind farm."

New England leads the way

All of New England combined uses less coal than each of the 35 most coal-heavy states did on their own.

According to the available from the US Energy Information Administration (EIA), this is how much coal each state used per person in 2013:

Skye Gould/Tech Insider

Coal is mostly used to generate electricity in power plants. Nationally, coal generated a whopping 39% of electricity in 2014, according to the EIA.

But in 2014, the dirty fossil fuel was responsible for only — down from 18% in 2005. And that figure drops to zero in Rhode Island and Vermont.

"The states have very robust environmental goals, so I think that has been part of [cutting coal]," Ucci said. "Permitting, air emissions requirements, etc. have made it harder for the dirtier fossil fuels to be burned for longer periods of time. Over the last couple of decades, [the region has] seen the retirements of coal and oil-fired resources, and those resources have been replaced in the generation sector by natural gas and obviously increasingly renewables."

Note this chart shows the shift in energy sources over the course of 2014.The clean sources of wind, solar, hydropower, and nuclear together make up about 40% of the region's energy these days.

Another 40% comes from natural gas, which is a fossil fuel that emits greenhouse gases into the atmosphere.

Natural gas burns cleaner than coal does, but it's a stopgap measure on the way to 100% renewables. It will tide us over until we can store all the energy that renewables like wind and solar generate so we can actually use it all. But we'll eventually have to ditch natural gas just like we have coal.

And that's what New England is planning for.

Reaching 100% renewable

A sunflower blooms in front of the solar array at Sterling College, in Craftsbury, Vermont.

The states are all part of the Regional Greenhouse Gas Initiative, which is a cap and trade program that sets emission limits the power sector has to pay fines for exceeding. Almost all of that money goes into renewables and making energy more efficient in the states.

Deepwater Wind/GE "If you look across the New England states, there's obviously a strong and long-term commitment to renewable energy," Ucci said.





Video: Ditching Fossil Fuels: Colorado moves to 100% Renewable Energy

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Date: 09.12.2018, 20:34 / Views: 61365


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