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Greenhouses and the environment

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The use of greenhouses around the world has been growing dramatically.  A new satellite mapping exercise estimated the total land area covered with permanent greenhouses at 3.2 million acres, which is an area the size of Connecticut.  More than half of this is in China, where the growth of greenhouses has been driven by the rapid urbanization of the country and by a more prosperous population increasingly consuming produce like tomatoes, cucumbers, peppers, and eggplants.

The intensive agricultural methods employed within greenhouses can be harmful to local environments because of overtaxing water supplies and by polluting rivers and soils with nutrients, pesticides, and plastic waste.  But the effects of vast areas of plastic coverings on local temperatures can be even more dramatic, and often beneficial.

There are so many plastic and glass roofs in many areas that they are reflecting sufficient amounts of solar radiation to cool local temperatures.  Greenhouse roofs increase the albedo – the reflectivity – of the land surface typically by a tenth.

All these greenhouses are just the tip of the albedo iceberg.  Many farms now temporarily cover crops with reflective plastic sheets.  If these coverings are included in the satellite survey, the total reflective area would be about ten times greater – roughly the size of New York State.

A study in Almeria, on the Mediterranean coast of Spain, which grows about 3 million tons of fruit and vegetables annually, determined the cooling effects of greenhouses.  Weather stations amid the greenhouses showed an average cooling of 1.3 degrees Fahrenheit compared with the surrounding area.

Greenhouses are an accidental and benign form of climate engineering. The cooling provided by greenhouses is similar to the effect of white roofs in urban areas. 

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Could the Global Boom in Greenhouses Help Cool the Planet?

Photo, posted September 6, 2017, courtesy of Lance Cheung / USDA via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Progress on offshore wind in New York

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New York has now conditionally awarded two offshore wind projects that will move towards operation in 2026.  The projects, totaling more than 1,700 megawatts of power, will be the largest power generation projects in New York state in more than 35 years.  It is an important milestone toward achieving the state’s goal of developing 9,000 megawatts of offshore wind by 2035.

Empire Wind I, located 15 miles southeast of Long Island, and Sunrise Wind, located more than 30 miles east of the eastern point of Long Island, have already completed most federal and state permitting requirements.  Empire Wind I received final approval of their Construction and Operation Plan from the Bureau of Ocean Energy Management in late February.

Both projects are expected to ramp up construction activity this year.  Previous awards by NYSERDA for the projects in 2019 included contract provisions for specific economic benefits to New York communities and commitments for purchasing iron and steel from American sources.   Empire Wind I is being developed by Equinor, an international energy company headquartered in Norway.  Sunrise Wind, originally a joint project by Ørsted and Eversource, is now solely being developed by Ørsted, a global energy company based in Denmark.

Following successful execution of the contracts for the two projects, NYSERDA payments under these awards will only begin once the projects have obtained all required permits and approvals, the construction has been completed, and the projects begin delivering clean energy to New York.

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New York selects Empire Wind I and Sunrise Wind offshore projects

Photo, posted June 14, 2022, courtesy of Lissa Eng / BOEM via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

New York’s Polystyrene Foam Ban | Earth Wise

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As of January 1, the state of New York now prohibits any person engaged in the business of selling or distributing prepared food or beverages from selling, offering for sale, or distributing disposable food service containers that contain expanded polystyrene foam in the state.  In addition, no manufacturer will be allowed to sell, offer for sale, or distribute polystyrene loose fill packaging in the state.

In other words, there will be no more Styrofoam bowls, cartons, clamshell containers, lids, plates, trays, or packing peanuts.

There are still some exceptions.  Raw meat, seafood, poultry, or fish sold for the purpose of cooking or preparing off-premises can still be packaged in polystyrene foam.  Prepackaged food filled or sealed prior to receipt by a food service provider can also still be packaged in polystyrene foam.

The New York State Department of Environmental Conservation is initially focusing its efforts on outreach and education to achieve compliance rather than on enforcement.   The DEC has provided detailed regulations to assist stakeholders with complying with the law.

Expanded polystyrene foam is a major contributor to environmental litter.  The material breaks apart easily and does not readily biodegrade, causing it to be persistent in the environment and contribute to microplastic pollution.  The foam causes negative impacts to wildlife, waterways, and natural resources.

An estimated 65% of New Yorkers were already living in communities that banned polystyrene foam, notably including New York City and Long Island which imposed a ban in 2019. 

New York becomes the fourth state to impose such a ban after Maine, Maryland, and Vermont.  Colorado and Virginia will follow suit in the next two years.

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Expanded Polystyrene Foam Container and Polystyrene Loose Fill Packaging Ban

Photo, posted November 16, 2015, courtesy of Karim Ghantous via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

New York And Renewables | Earth Wise

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In 2019, New York generated more electricity from renewable sources than all but three other states.  The 39.4 million MWh of renewable electricity generated in New York was the largest of any state east of the Mississippi. 

New York has been a leader in renewable power long before it became a topic of great interest because of its hydroelectric power.  In 2019, 78% of the state’s renewable electricity came from hydropower.  The Robert Moses Niagara hydroelectric plant is the second-largest capacity conventional hydroelectric power plant in the country. 

The three states that generated more renewable electricity than New York are California, Texas, and Washington.  Washington gets 69% of all its electricity generation from its multiple hydroelectric plants which together produce a quarter of all hydroelectric power in the nation.  Texas leads the nation in wind-powered generation and gets over 17% of its in-state generation from wind.  California gets 14% of its power from solar generation, 7% from wind, and over 16% from its own hydroelectric resources.

Wind is the second-largest source of renewable power in New York, accounting for 11% of renewable generation in the state and 3% of total electricity generation.  Solar power is expanding in New York, but the great majority of it is still in the form of small-scale installations on residential and commercial rooftops.

New York’s renewable generation grew from 19% in 2005 to 30% at present.  New York’s Clean Energy Standard adopted in 2015 requires the state to generate 100% carbon-free electricity by 2040.

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New York generated fourth most electricity from renewables of any state in 2019

Photo, posted October 15, 2010, courtesy of michael-swan via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Upstate Energy Storage | Earth Wise

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In August, the New York Power Authority announced the start of construction on one of the largest battery energy storage projects in the nation.  Located in Franklin County at the very top of New York State, the project will comprise 20 MW of lithium ion battery storage that will help the state meet its peak power needs by absorbing excess generation that can be discharged later when the grid demands it.

The Northern New York region gets more than 80% of its electricity supply from renewable sources, including the St. Lawrence hydropower project and more than 650 MW of wind generation.  Having the ability to store some of this renewable energy for later delivery will help to eliminate transmission constraints that can prevent energy from being delivered to consumers.

The battery storage facility is one of two such large systems in the state.  The other one is a 20 MW battery storage system developed by Key Capture Energy in Stillwater in Saratoga County.  That project, which was funded by NYSERDA under the state’s Bulk Storage incentive program, is connected to the wholesale transmission network and is a revenue source for Key Capture, an independent utility-scale battery storage developer based in Albany.

The new storage project’s location is an ideal opportunity to spotlight the value of energy storage given the proximity of the hydropower project and extensive wind resources.  Being able to store renewable energy will improve transmission of the state’s electric power to downstate markets as well as help meet the state’s goals for reducing its carbon footprint and increasing its reliance upon renewable energy.

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Construction begins on NYPA’s second large-scale storage project

Photo courtesy of ceedub13, CC BY 2.0.

Earth Wise is a production of WAMC Northeast Public Radio.

WAMC Northeast Public Radio

WAMC/Northeast Public Radio is a regional public radio network serving parts of seven northeastern states (more...)