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Deadly Heatwaves On The Rise | Earth Wise

September 20, 2023 By EarthWise Leave a Comment

The European heatwave in the summer of 2003 resulted in at least 30,000 deaths with more than 14,000 in France alone. At the time, such a heatwave was considered to be a once-in-a-hundred-year event. But the warming climate is dramatically changing the odds for deadly heatwaves.

A new study by the ETH Institute in Zurich has found that the risk of fatal heatwaves has risen sharply over the past 20 years, and in the future, such extreme weather will become more frequent and heat-related excess mortality will increase, particularly in Europe. According to a paper published in Nature Medicine, more than 61,000 deaths in Europe could be blamed on the heat during the summer of 2022, which was the hottest summer on record for the continent. When the readings from this summer are analyzed, that record is likely to be surpassed.

Heatwaves lead to excess deaths due to dehydration, heat stroke, and cardiovascular collapse. They are particularly deadly for the elderly, the sick, and the poor. The ETH researchers analyzed comprehensive data from 748 cities and communities in 47 countries. They determined the relationship between increased temperature and excess mortality. Their models look at how excess mortality would develop with an average global temperature increase of 0.7 degrees Celsius (the value in 2000), 1.2 degrees (the value in 2020), and both 1.5 degrees (the limit sought by the Paris Agreement) and 2 degrees.

Even with the current global temperature, heatwaves that were a once-in-a-century event are now expected to occur every 10 years. With 2 degrees of warming, such heatwaves could happen every 2 to 5 years.

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Heatwaves are becoming more frequent and more deadly

Photo, posted July 22, 2009, courtesy of Matt McGee via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Floating Solar And Hydropower | Earth Wise

August 16, 2023 By EarthWise Leave a Comment

Installing solar panels on the surface of reservoirs is an up-and-coming trend. The arrays of solar panels produce renewable energy while at the same time shielding significant expanses of water from the sun’s heat, thereby reducing evaporation. The panels also help to inhibit the growth of algae.

Two recent floating solar installations are demonstrating the synergy between solar power and hydroelectric power.

The Lazer floating solar plant in France comprises over 50,000 solar panels and is capable of producing 30 MW of power. The reservoir serves a 16.5 MW hydropower plant. During the summer, the water from Lazer Reservoir is used primarily for crop irrigation and the solar plant supplements power generation as the reservoir water level experiences variations. This is the first facility of its kind to be installed in France. The company that built it – the EDF Group – had already built four floating solar power plants in Israel and the US.

In Colombia, the Aquasol solar project is installed at the 340 MW Urrá hydropower plant. Its 2,800 solar panels produce enough power to offset the amount of energy it takes to operate the dam. The floating solar system is designed to withstand water-level fluctuations of up to 120 feet.

Floating solar systems can help keep power flowing when low water levels or other adverse conditions reduce hydroelectric output. About 60% of the world’s renewable energy comes from hydropower. Given this fact, there are countless opportunities to deploy floating solar that maximizes zero-emission energy generation as well as diversifying clean energy sources.

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Floating solar and hydropower: A match made in renewable energy heaven

Photo, posted October 25, 2010, courtesy of Martin Abegglen via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Solar Parking Lots In France | Earth Wise

January 6, 2023 By EarthWise Leave a Comment

France has passed legislation that will require all parking lots with more than 80 spaces to be covered over by solar panels. This is part of a broader effort to put solar panels on vacant lots, empty land alongside roadways and train tracks, and even some farmland. The overall program would add 11 gigawatts of solar power to the French electricity grid.

The legislation applies to both new and existing parking lots. Owners of parking lots with more than 400 spaces would have 3 years to comply, while owners of lots with 80 to 400 spaces would have five years.

To produce 11 gigawatts of solar output, about half a percent of France’s urban land would need to be covered with solar panels. This is quite a bit, but not an insurmountable obstacle. Parking lots, however, could only provide a fraction of what is needed. It would take something like 8 million parking spaces covered with solar panels to produce that much power. That is probably at least twice as many as France has.

Several countries, most notably Germany, already have mandates for new construction to incorporate renewable energy. This includes solar panels, biomass boilers, heat pumps, and wind turbines. Many parking lots in southern Europe already have sunshades over them, which would make it pretty easy to install solar panels. This is much rarer in cooler countries.

France is pursuing this policy to reduce its dependence on nuclear power, which currently provides 70% of the country’s electricity. Apart from the general trend of opposition to nuclear power, reliance upon it during increasingly common droughts is problematic as the power plants require significant amounts of water to operate.

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France’s plan for solar panels on all car parks is just the start of an urban renewable revolution

Photo, posted February 11, 2008, courtesy of Armando Jimenez / U.S. Army Environmental Command via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

A Hot Year In Europe | Earth Wise

January 5, 2023 By EarthWise Leave a Comment

This past summer was marked by some devastating heat waves in Europe. Through November, the UK, Germany, and France have experienced their hottest year on record.

The UK has experienced its warmest year since 1884 and, in fact, all the top ten warmest years on record have occurred since 2002.

In France, the average temperature for the year is a few tenths of a degree higher than the previous record, which was set in 2020.

In Germany, the first 11 months of the year saw a record for average temperature. Its previous record was also set in 2020.

All three countries saw a spike in heat-related mortality as result of the summer heatwaves. England and Wales reported 3,271 excess deaths during the summer. France reported 2,816 excess deaths during its three heat waves. In Germany, an estimated 4,500 people died as a result of extreme heat.

There are multiple effects of climate change which include more frequent heat waves in Europe. A recent study showed that European summers are warming twice as fast as the global average. In fact, summer temperatures across much of the European continent have already risen by 3.6 degrees Fahrenheit or 2 degrees Celsius, which is the feared level of global climate increase that nations around the world are trying to stave off.

Worldwide, 2022 will rank among the top ten warmest years on record but will most likely not be the warmest. That being said, the past eight years are on track to be the eight warmest years on record. The US will also see one of its ten warmest years, although not the warmest.

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UK, Germany, France on Pace for Their Hottest Year on Record

Photo, posted April 23, 2022, courtesy of Jose A. via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Food Waste And The Environment | Earth Wise

November 25, 2022 By EarthWise Leave a Comment

It is tragic that 31% of the world’s food production goes uneaten. About 14% isn’t distributed after it is harvested. Another 17% ends up wasted in retail or by consumers. Worldwide, the amount of food that is wasted is enough to feed more than a billion people while at least 828 million people continue to be affected by hunger. To make matters worse, food waste accounts for 8 to 10% of global greenhouse gas emissions, which is at least double that of aviation. Food waste, rotting away in landfills, produces methane gas, a major source of global warming.

Around the world, there are efforts being launched to try to improve the situation. California now has a law that requires grocery stores to donate edible food that would otherwise be disposed of or they face fines. The state’s cities and counties are required to reduce the amount of organic waste going into landfills by 75% by 2025 and compost it instead.

In London, grocers no longer put date labels on fruits and vegetables because the labels were leading people to trash perfectly good food. France now requires supermarkets and large caterers to donate food that is still safe to eat.

South Korea has little space for landfills. So, the country has been campaigning against throwing away food for 20 years. Nearly all organic waste in the country is turned into animal feed, compost, or biogas. Koreans even have to pay for throwing out food waste. There are now trash bins equipped with electronic sensors that weigh food waste.

All of these things can help. There is no single magic bullet for reducing food waste, but it is essential to do for so many reasons.

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Inside the Global Effort to Keep Perfectly Good Food Out of the Dump

Photo, posted November 30, 2020, courtesy of Marco Verch via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Prospects For Floating Solar | Earth Wise

October 10, 2022 By EarthWise Leave a Comment

Countries are trying to figure out how to get enough energy from solar and wind generation to completely decarbonize their economies. According to some estimates, nations might have to devote between half a percent and five percent of their land area to solar panels to get the job done. Half a percent is about the amount of the U.S. that is covered by paved roads. While there is lots of open land in many parts of the country, covering it with solar panels might not be acceptable to farmers, conservationists, or other interested parties.

One way to deploy more solar panels without using up land is the use of floating solar panels. Floating photovoltaic systems – also known as floatovoltaics – are becoming increasingly common, especially in Asia. This year, China installed one of the largest floatovoltaic systems in the world on a reservoir near the city of Dezhou.

Floating solar panels stay cooler and run more efficiently than those on land. The panels also help prevent evaporation from their watery homes and the shading they provide also help to minimize algal blooms. Solar installations on reservoirs generally puts them near cities, making it easier to feed power into urban grids.

On the other hand, floating solar systems need to be able to withstand water and waves and are generally more expensive to build than land-based systems.

At present, the installed global capacity of floating solar is only about 3 gigawatts, compared with more than 700 gigawatts of land-based systems. However, reservoirs around the world collectively cover an area about the size of France. Covering just 10 percent of them with floating solar could produce as much power as all the fossil-fuel plants in operation worldwide.

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Solar Takes a Swim

Photo, posted March 7, 2019, courtesy of Hedgerow INC via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Floating Homes In The Netherlands | Earth Wise

January 24, 2022 By EarthWise Leave a Comment

The Netherlands is a country that is largely built on reclaimed land and a third of it remains below sea level. The Dutch have long experience with dealing with rising waters. The city of Amsterdam has almost 3,000 houseboats in its canals.

As sea levels continue to rise across the globe, it is no surprise that the Dutch have taken the lead in creating communities composed of floating houses and buildings.

A floating house is a structure fixed to the shore, often resting on steel poles, and usually connected to the local sewer system and power grid. They are much like ordinary houses except that instead of a basement, they have a concrete hull that acts as a counterweight, allowing them to remain stable in the water.

The ones in the Netherlands are often prefabricated, square-shaped, three-story townhouses. Rotterdam, which is 90% below sea level, is home to the world’s largest floating office building as well as a floating farm.

Floating buildings have their challenges, not the least of which are the effects of severe wind and rainstorms, or even the passing of large ships which can make the buildings rock. Infrastructure like electricity and sewer service is not that simple to implement for the buildings. But the benefits of floating buildings may outweigh the costs.

For cities facing worsening floods and a shortage of buildable land, floating homes are a potential solution for expanding urban housing in the age of climate change. Dutch engineers are spearheading floating building projects in Britain, France, and Norway, as well as in threatened island locations like French Polynesia and the Maldives.

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Embracing a Wetter Future, the Dutch Turn to Floating Homes

Photo, posted May 23, 2007, courtesy of Jeff Hutchison via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Private Jets and CO2 Emissions | Earth Wise

July 16, 2021 By EarthWise Leave a Comment

During the heart of the Covid-19 pandemic, private jet use saw record levels because chartered aircraft were estimated to have 30 times lower risk for covid than flying commercial. By August 2020, while commercial flights were down 60% year-over-year, private jet traffic was actually up. From an environmental perspective, however, flying on a private jet is about the worst thing one can do for the environment.

Private jets are 10 times more carbon intensive than airlines on average and 50 times more polluting than trains. A four-hour private flight emits as much as the average person does in a year.

In Europe, 7 out of the 10 most polluting routes taken by private aircraft lie in the UK-France-Switzerland-Italy axis, with jets departing the UK and France being the biggest source of pollution. One in 10 flights departing France are private jets, half of which travelled less than 300 miles.

A study by the research group Transport & Environment points out that wealthy private jet owners are ideally suited to aid in the decarbonization of the aviation sector. Private jet short hops are prime targets for replacement by clean technologies like electric and hydrogen aircraft. European policy makers could ban the use of fossil-fuel private jets for flights under 600 miles by 2030. Until such a ban, jet fuel and flight taxes could be imposed on private jets to account for their disproportionate climate impact and support technology development. And companies and individuals could commit to substantial reductions in private jet use when alternatives exist that do not unreasonably increase travel time.

The super-rich could be part of the solution instead of part of the problem.

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Private Jet Use Rising, Sending CO2 Emissions Soaring

Photo, posted September 9, 2020, courtesy of Mackenzie Cole via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Banning Short Plane Flights | Earth Wise

May 20, 2021 By EarthWise Leave a Comment

Almost everything we do ultimately results in greenhouse gases entering the atmosphere and therefore has an impact on the climate. But some activities have much more impact than others. The aviation industry is responsible for about 5% of global warming.

This doesn’t seem like that large a contribution, but only a very small percentage of the world’s population flies frequently and even in richer countries, only around half the population flew in any given year (at least before the pandemic.)

Flying is generally the only practical option for most long-haul trips and unless people give up on seeing the world or conducting global business in person, they are not going to give up taking air trips.

But shorter flights are a different story. If you are planning to take a reasonably short trip in France, a plane will soon no longer be an option. The French government says that flights will be banned on any route where the trip could be made on a train in 2.5 hours or less. The driving force is the reduction of CO2 emissions. A plane trip emits an average of 77 times more CO2 per passenger than taking a train on the same route.

The Netherlands and Belgium are also considering bans on short-haul flights and Austrian Airlines recently replaced its Vienna-to-Salzburg flights with train service.

Advocates of the flight bans say that not only does taking the train significantly reduce a traveler’s carbon footprint, but it can be cheaper and actually faster than a plane when factoring in the time spent getting to airports, standing in security lines, getting on and off planes, and so on. Europe’s extensive train system makes this approach broadly practical. Unfortunately, here in the U.S., it is not quite that easy.

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France Will Ban Short Flights That Could Be Replaced By a Train Trip

Photo, posted December 17, 2016, courtesy of Dylan Agbagni via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

PPE Pollution | Earth Wise

June 25, 2020 By EarthWise Leave a Comment

While the COVID-19 pandemic and its shutdown of so many human activities has reduced many kinds of pollution, it has also managed to create a new source of pollution: face masks and sanitary gloves.

Divers from a French non-profit organization called Operation Clean Sea are already finding gloves, masks, and hand sanitizer bottles beneath the waves of the Mediterranean, along with the usual litter of disposable cups and aluminum cans. In France, authorities have ordered 2 billion disposable masks. Given that, there may soon be the risk of having more masks in the Mediterranean than jellyfish. In Hong Kong, face masks have been piling up on beaches and nature trails. Even in Hong Kong’s isolated and uninhabited Soko Islands, dozens of masks are showing up on a small stretch of beach.

Disposable masks may feel like soft cotton, but almost all of them are made from non-biodegradable material such as polypropylene. When such masks are discarded into storm drains, they end up in rivers and seas. With a lifespan of hundreds of years, these masks are an ecological timebomb. Land-based activity accounts for 80% of ocean pollution, and half of that is a direct result of single-use plastics. Many of the CDC’s recent recommendations for reopening offices and businesses actually recommend the increased use of them, and for sensible reasons.

The best we can all do is to wear reusable masks and to try to wash our hands more often rather than putting on another pair of latex gloves. Given that there are alternatives, we don’t need to make plastic the solution to protect us from Covid-19.

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COVID-19 Masks Are Polluting Beaches and Oceans

Photo, posted March 28, 2020, courtesy of Michael Swan via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Electric Cars And The Environment | Earth Wise

April 20, 2020 By EarthWise Leave a Comment

There are articles in the media all the time questioning whether electric cars are really better for the environment than those powered by fossil fuels. The usual argument is that once emissions from vehicle production and electricity generation are taken into account, electric cars are no greener than gas cars, or even worse for the environment. Of course, these arguments tend to be made by oil companies and their supporters.

A new study by three European universities looked at this very issue in detail. They carried out a life-cycle assessment in which they not only calculated greenhouse gas emissions generated when using cars, but also in the production chain and waste processing.

Their conclusions are that under current conditions, driving an electric car is better for the climate than conventional gasoline cars in 95% of the world. The only exceptions are places like Poland, where almost all electricity comes from coal-fired plants.

Average lifetime emissions associated with electric cars are up to 70% lower than gas cars in countries like Sweden and France and about 30% lower in England.

It is important to note than in a few years, even inefficient electric cars will be less emission-intensive than gas cars because electricity generation is becoming less carbon-intensive all the time. The study projects that by 2050, half of the world’s cars will be electric resulting in carbon dioxide emission reductions of 1.5 billion tons.

The study states that the idea that electric cars could increase emissions is a myth. The detailed study has run the numbers for all around the world and even in the worst-case scenario, there would be a reduction in emissions in almost all cases.

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Electric cars better for climate in 95% of the world

Photo, posted February 13, 2019, courtesy of Guillaume Vachey via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Scandinavian Wine

December 20, 2019 By EarthWise Leave a Comment

The warming climate is creating some unexpected entrepreneurial opportunities. Many places that have traditionally dominated the wine industry are starting to be worried that the local climates that made them ideal for vineyards are changing and becoming much less ideal. On the other hand, places where wine-making was regarded as a losing proposition are becoming much more hospitable. A prime example is Scandinavia.

Nordic vintners are increasingly convinced that they can develop thriving commercial operations in what used to be places that are too cold for successful wine-making.

Denmark now has 90 commercial vineyards, up from just two 15 years ago. Forty vineyards have sprung up in Sweden. About a dozen vineyards are now operating as far north as Norway.

Many of these Nordic vineyards are in the startup stage and are tiny compared with the established wineries of Europe. Europe has 10 million acres of vineyards, which is enough to cover almost the entire country of Denmark. At the moment, there are only about 1,000 acres of vineyards in Denmark and Sweden.

But, looking forward, Scandinavia’s climate is forecast to be more like northern France, as regional temperatures climb as much as 10 degrees Fahrenheit. Over the past decade, warming has produced milder winters, a longer growing season, and even a small but rising number of award-winning Scandinavian wines.

Meanwhile, traditional wine-growing regions are also dealing with climate change. Winemakers in France, for example, are experimenting with grapes from warmer countries like Tunisia to see if they can retain the tastes and yields that are the basis of a multibillion-dollar wine industry. Spanish and Italian winemakers are planting grapes higher up on mountainsides or on shaded north-facing slopes to preserve the quality of their wine.

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Scandinavian Wine? A Warming Climate Tempts Entrepreneurs

Photo, posted August 24, 2019, courtesy of Ron Reiring via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Europe Is Warming Faster Than Predicted

October 9, 2019 By EarthWise Leave a Comment

A new study has found that Europe is warming faster than even climate models projected. The number of summer days with extreme heat in Europe has tripled since the 1950s, while the number of days with extreme cold has decreased by factors of two or three depending on the region.

According to climate scientists at the Swiss Federal Institute of Technology in Zurich, the climate trends are much larger than what would come from natural variability and are a clear signal of climate change. Extremely hot days in Europe have become hotter by an average of more than 4 degrees Fahrenheit while extremely cold days have warmed by more than 5 degrees. The research examined data from weather stations across Europe from 1950 to 2018. Over 90% of the stations recorded increasing temperatures over time, a percentage much too high to be purely from natural climate variability. The results also showed that the region was warming even faster than climate models projected.

The research results come after an extremely hot summer in Europe. Southern France hit 114.8 degrees, a new record, in June. Germany, the Netherlands, and Belgium all recorded all-time national temperature highs. The National Oceanic and Atmospheric Administration recently announced that July was the hottest month ever recorded.

European summers and winters will only grow hotter in the coming years as climate change accelerates. The rapidly increasing temperatures will impact cities and people that are unprepared for them and pose real risks for residents in the coming decades. Extreme heat is dangerous because it stresses the human body, potentially leading to heat exhaustion or heat stroke.

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Europe warming faster than expected due to climate change

Photo, posted July 30, 2011, courtesy of Marcel de Jong via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

A Record European Heatwave

August 1, 2019 By EarthWise Leave a Comment

Sahara Desert winds blasted Europe in June, especially during a five-day heatwave that set many records. Between that and weather elsewhere, June was not only one of the hottest ever for that continent, but also for the world as a whole.

In Europe, the average temperature was about 5 degrees Fahrenheit above the June average of a century ago. The global temperature was nearly 2 degrees Fahrenheit higher.

The European heatwave broke temperature records in France, Switzerland, Austria, Germany, and Spain. A temperature above 114 degrees was recorded near the French city of Nîmes.

The intense heat lead to wildfires in Spain and Germany, and widespread disruption across Europe. Undoubtedly, the heatwave has caused many premature deaths, but it will take some time to compile those statistics. The European heatwave of 2003 caused more than 70,000 premature deaths.

According to calculations by climate scientists, the record-breaking heatwave in June was made at least 5 and as much as 100 times more likely by climate change. Global heating caused by the carbon emissions from burning fossil fuels and other human activities means that heatwaves are becoming more probable and severe. So-called attribution studies estimate how much more likely and severe such events are.

The researchers used temperature records stretching back to 1901 to assess the probability of a heatwave last month and in the past. They also examined climate change models to assess the impact of global heating. More than 230 attribution studies to date around the world have found that 95% of heatwaves were made more likely or worse by climate change.

It was the hottest June on record in Europe by a country mile and there are likely to be more months like it in the future.

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Climate Change Made Last Month’s European Heatwave At Least Five Times More Likely

Photo, posted February 13, 2018, courtesy of Guilhem Vellut via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Climate Change And Insurance

May 17, 2019 By EarthWise Leave a Comment

While there are still some people who remain dubious about the reality of climate change, insurance companies are not among them. And, in fact, insurers are warning that climate change could make coverage for ordinary people unaffordable.

Munich Reinsurance, the world’s largest reinsurance firm, blamed global warming for $24 billion in losses from California’s recent wildfires. Such costs could soon be widely felt as premium rises are already under discussion with insurance companies having clients in vulnerable parts of the state.

With the risk from wildfires, flooding, storms and hail increasing, the only sustainable option for the insurance industry is to adjust risk prices accordingly. Ultimately, this may become a social issue. Affordability of insurance is critical because if rates go up too much, many people on low and average incomes in some regions may no longer be able to buy insurance.

The great majority of California’s 20 worst forest fires since the 1930’s has occurred since the year 2000 driven by abnormally high summer temperatures and persistent drought. The reinsurance giant analyzed decades of data with climate models and concluded that the fires are likely driven by climate change.

It isn’t just wildfires. Insurance premiums are also being adjusted in regions facing an increased threat from severe convective storms whose energy and severity are driven by global warming. These include parts of Germany, Austria, France, southwest Italy, and the U.S. Midwest.

Linking extreme weather events to climate change is a bit like attributing the performance of a steroid-using athlete to drug use. The connections are clearer in patterns than in individual disasters. But the pattern these days is pretty clear.

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Climate Change Could Make Insurance Unaffordable for Most People

Photo, posted June 12, 2013, courtesy of Jeff Head via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Big Success From A Big Battery

January 1, 2019 By EarthWise Leave a Comment

In the fall of 2017, Tesla took on the challenge of installing a 100-megawatt battery storage system in South Australia in under 100 days, promising that the system would be free if it was not built in time. The project was actually completed in 54 days.

The system is located at the Hornsdale Wind Farm, which consists of 99 wind turbines with a generation capacity of 315 MW. The Hornsdale Power Reserve installation is the world’s largest lithium-ion battery system and, after a year of operation,has proven to be a smashing success. Estimates are that the project has reduced costs associated with stabilizing the energy grid by about $29 million. The cost of the system was about $87 million, so it is paying for itself quite rapidly. The wind farm and battery systems are owned and operated by a French renewable energy company.

The battery storage system provides a variety of different services to the electric grid. The primary motivation for it was to achieve system security and reduce the risk of blackouts and load shedding. Having the battery system in place protects the regional interconnection from tripping,which reduces the risk of separation of South Australia from the National Electricity market. The system also provides so-called ancillary services such as frequency control and other forms of electricity supply regulation.

The most significant contribution of the Hornsdale Power Reserve is that it has raised the profile of energy storage technology and demonstrated its unique capabilities. Based on the success of the system, there are now about 2,500 MWh of new storage projects announced by the public and private sectors in Australia.

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