The pairing of wind and solar is emerging as a smart strategy to implement renewable energy sources with better economic feasibility.A Fine Couple They Are (Wind and Solar Power) as suggested by Jim Romeo would definitely affect this Energy Transition era if only in terms of duration.
The pairing of wind and solar power is an advantageous complement; the two benefit each other. The synergistic combination is an emerging trend in renewable energy and power generation as costs drop. The pairing of sustainable sources is in early stages, however. And the configuration still has challenges regarding return on investment (ROI), ease of implementation, and storage.
In western Minnesota, a 2-MW wind turbine and 500-kW solar installation—wind-solar hybrid project—is an early entrant to the wind-solar market and one of the first of its kind in the U.S. It was introduced at a cost of about $5 million with high expectations and the goal that Lake Region Electric Cooperative in Pelican Rapids would acquire the power for its 27,000 members.
The pioneering project got a boost amid the lower costs of solar. The power generation from both renewable sources is calculated to provide dividends on its investment.
According to market researcher Global Market Insights, hybrid solar-wind projects are expected to grow by 4% in the U.S. over the next five years to join a $1.5 billion global market. Some attribute the growth to the 2015 United Nations Climate Change Conference objectives, combined with lower costs of development and materials, and a keen interest by many nations to rely more on renewable energy sources. Because wind turbine power and solar both have excess capacity, together they offer far greater possibilities.
Lucrative but Limited
Renewables especially make economic sense in non-urban areas, where costs per kWh are higher, said Mike Voll, principal and sector lead for Smart Technologies at Stantec. “So, rural communities and remote locations, where energy prices often reach $0.40 to $0.45 per kilowatt-hour, actually see an ROI from these projects. When it comes to combining both wind and solar with storage, however, the list of locations is even smaller still. In a perfect world, we’d have a place that has excellent radiance with enough wind and low cloud cover, but the reality is there are very few locations that meet the geographic requirements. So even as the price continues to drop, there will still be significant limitations to pairing solar and wind.”
Despite limitations, renewables can work well in locations where everything clicks. A storage option is an essential component. “Adding energy storage can reduce intermittency of output, reshape the generation profile to match to load, and enable dispatch of the renewable energy to maximize revenue generation through ISO market participation or utility programs,” said Todd Tolliver, senior manager at ICF, a global consulting and technology services company headquartered in Fairfax, Virginia.
Tolliver said the economic viability of these systems is constrained by equipment, costs of storage, and limited or irregular revenue streams. But he explained that the most common combination today is solar plus battery storage, thanks to investment tax credit and incentive programs in certain markets that provide clear lower costs and better revenue streams. Still, wind power energy storage has challenges.
A new study reveals just how stunningly rapid the clean energy transition is.
Bloomberg New Energy Finance (BNEF) reported on Tuesday that renewables are now the cheapest form of new electricity generation across two thirds of the world — cheaper than both new coal and new natural gas power.
Equally remarkable, BNEF projects that by 2030, wind and solar will “undercut existing coal and gas almost everywhere.”
In other words, within a decade it will be cheaper to build and operate new renewable power plants than it will be to just keep operating existing fossil fuel plants — even in the United States.
The reason for this transformation is the remarkable drop in both solar and wind power prices this decade: Since 2010, wind power has dropped 49% in cost and solar plummeted 85%.
BNEF projects prices will continue to fall for the next decade and beyond, with the cost of solar panels and wind power dropping by another third by 2030. Overall, by 2050, the cost of solar electricity is expected to drop 63% compared to today, and the cost of wind will likely drop 48%.
Because of these ongoing price drops, the world is projected to invest a whopping $4.2 trillion in solar power generation in the next three decades. The result is that solar will jump from a mere 2% of global power generation today to a remarkable 22% in 2050.
Over the same three decades, global investment in wind power will likely hit $5.3 trillion, and wind is expected to rise from 5% of global electricity today to 26% in 2050.
The result is that we are shifting from a world today where two thirds of power generation is from fossil fuels to one three decades from now where two thirds is zero carbon. As BNEF puts it, we are “ending the era of fossil fuel dominance in the power sector.”
IPS Newsin theirCombating Desertification and Droughtin a post reproduced here holds that the issue of land degradation impacting all countries in all continents would require governments, land users and all different communities of a country to be part of the solution.
ANKARA, Jun 17 2019 (IPS) – The coming decades will be crucial in shaping and implementing a transformative land agenda, according to a scientist at the United Nations Convention to Combat Desertification (UNCCD) framework for Land Degradation Neutrality (LDN).
UNCCD-Science Policy Interface co-chair Dr. Mariam Akhtar-Schuster, who spoke with IPS ahead of the start of activities to mark World Day to Combat Desertification (WDCD) on Monday, Jun. 17, said this was one of the key messages emerging for policy- and other decision-makers.
“The main message is: things are not improving. The issue of desertification is becoming clearer to different communities, but we now have to start implementing the knowledge that we already have to combat desertification,” Akhtar-Schuster told IPS.
“It’s not only technology that we have to implement, it is the policy level that has to develop a governance structure which supports sustainable land management practices.”
IPBES Science and Policy for People and Nature found that the biosphere and atmosphere, upon which humanity as a whole depends, have been deeply reconfigured by people.
The report shows that 75 percent of the land area is very significantly altered, 66 percent of the ocean area is experiencing increasing cumulative impacts, and 85 percent of the wetland area has been lost.
“There are of course areas which are harder hit; these are areas which are experiencing extreme drought which makes it even more difficult to sustainably use land resources,” Akhtar-Schuster said.
“On all continents you have the issue of land degradation, so there’s no continent, there’s no country which can just lean back and say this is not our issue. Everybody has to do something.”
Akhtar-Schuster said there is sufficient knowledge out there which already can support evidence-based implementation of technology so that at least land degradation does not continue.
While the information is available, Akhtar-Schuster said it requires governments, land users and all different communities in a country to be part of the solution.
“There is no top-down approach. You need the people on the ground, you need the people who generate knowledge and you need the policy makers to implement that knowledge. You need everybody,” the UNCCD-SPI co-chair said.
“Nobody in a community, in a social environment, can say this has nothing to do with me. We are all consumers of products which are generated from land. So, we in our daily lives – the way we eat, the way we dress ourselves – whatever we do has something to do with land, and we can take decisions which are more friendly to land than what we’re doing at the moment.”
UNCCD-Science Policy Interface co-chair Dr. Mariam Akhtar-Schuster says things are not improving and that the issue of desertification is becoming clearer to different communities. Credit: Desmond Brown/IPS
UNCCD Lead Scientist Dr. Barron Joseph Orr said it’s important to note that while the four major assessments were all done for different reasons, using different methodologies, they are all converging on very similar messages.
He said while in the past land degradation was seen as a problem in a place where there is overgrazing or poor management practices on agricultural lands, the reality is, that’s not influencing the change in land.
“What’s very different from the past is the rate of land transformation. The pace of that change is considerable, both in terms of conversion to farm land and conversion to built-up areas,” Orr told IPS.
“We’ve got a situation where 75 percent of the land surface of the earth has been transformed, and the demand for food is only going to go up between now and 2050 with the population growth expected to increase one to two billion people.”
That’s a significant jump. Our demand for energy that’s drawn from land, bio energy, or the need for land for solar and wind energy is only going to increase but these studies are making it clear that we are not optimising our use,” Orr added.
Like Akhtar-Schuster, Orr said it’s now public knowledge what tools are necessary to sustainably manage agricultural land, and to restore or rehabilitate land that has been degraded.
“We need better incentives for our farmers and ranchers to do the right thing on the landscape, we have to have stronger safeguards for tenures so that future generations can continue that stewardship of the land,” he added.
The international community adopted the Convention to Combat Desertification in Paris on Jun. 17, 1994.
At the same time, they will look at the broad picture of the next 25 years where they will achieve land degradation neutrality.
The anniversary campaign runs under the slogan “Let’s grow the future together,” with the global observance of WDCD and the 25th anniversary of the Convention on Jun. 17, hosted by the government of Turkey.
On the road from Wadi Rum to Petra in Jordan, where signs point to the Sheikh Zayed solar complex, wind turbines turn languidly in a steady breeze. At Petra, even Bedouin encampments have solar panels and many homes in Amman use solar tubes to heat water. The UAE made headlines with its world-record solar installations, but in all the Middle East, the impact of the renewable revolution is most visible in the Jordanian landscape.
By last year, the Hashemite kingdom had installed 285 megawatts of wind and 771MW of solar power, a significant chunk of its total generation of about 4 gigawatts. By 2021, it wants to have 2.7GW of renewable capacity. Over the next decade, Jordan’s efforts could really take off – providing half of all electricity output, in our analysis at Qamar Energy. It is only a small market, but it is an important trailblazer for the region’s aspirations in renewables.
Jordan’s success has been built on good resources, solid policy and the imperatives of an energy crisis. Like most Middle East countries, the kingdom has abundant sunny desert land and, similar to Egypt and northern Saudi Arabia, it’s also quite windy in places.
The country started early on encouraging renewables with the Tafila wind farm, a joint venture with Masdar, built in 2015. It offers investors a reasonable return and gives smaller users such as hospitals and universities the chance to build solar panels on vacant land and transmit the power through a grid.
The biggest impetus to alternative energy was the cut-off from Egyptian gas supplies following the 2011 revolution, because of repeated militant attacks on the Sinai pipeline. Jordan’s budget deficit widened because the country, which imports more than 90 per cent of its energy needs and has historically financed its deficits through grants and soft loans, had to burn expensive oil for electricity. Jordan, which already hosted thousands of Iraqi refugees, had to accommodate an increasing power demand due to an influx of 1.3 million Syrians escaping the conflict in their country.
In response, the kingdom opened a liquefied natural gas import terminal at Aqaba, and negotiated supplies from the American company Noble, which produces from offshore Israel. Jordan has large resources of oil shale, effectively an immature form of petroleum source rocks, which can be cooked into oil. A Chinese-led consortium is developing a power plant based on burning this dirty material.
Jordan’s success has been built on good resources, solid policy and the imperatives of an energy crisis.
Efforts to construct a nuclear power plant have been hampered by a lack of cooling water, public opposition and the high costs of financing. Instead, Amman may opt for smaller, modular nuclear reactors that could be fabricated off-site.
To cover the higher costs of fuel, energy subsidies had to be cut back, putting a heavy burden on citizens at a time of sharp economic slowdown. But this had the positive effect of making individual rooftop solar installations attractive for small businesses and householders.
Local Jordanian companies, such as Kawar Energy and Shamsuna Power, along with Dubai-based companies including Yellow Door Energy, have created viable businesses and high-skilled employment. By the early 2020s, Jordan will have the Middle East’s lowest carbon output electricity grid, despite the carbon-heavy oil shale facility.
Success will soon bring its own challenges. Renewable output will exceed total demand at times, while the country still needs to provide for high-consumption and night-time periods. Hydropower, which could be used to store excess renewables, is minimal in the desert country.
The Red-Dead Sea project is intended to bring water to the Dead Sea, which is fast drying up due to climate change and the overuse of the Jordan River. On the way, the water would generate power for desalination. But the expensive venture faces environmental concerns and political hurdles in co-operating with Israel.
Philadelphia Solar, a local company, has announced plans for a solar plant with battery storage. Concentrated solar thermal plants (CSP), like the one under construction in Dubai, can save the Sun’s heat to generate power overnight. These do not seem to be part of Jordan’s plans yet, but the country has excellent conditions for CSP.
Electricity interconnections with Egypt, Saudi Arabia, Iraq and the West Bank are also underway, which could boost the resilience and renewable share of the whole area’s power grid. It could also send power to help rebuild war-torn Syria.
Jordan’s consumers will have to consider the benefits from the country’s renewable expansion, particularly industries which have complained of high electricity prices. Prices are high during peak demand hours, but this scheme will have to become more flexible to lower prices when there is an excess of solar.
Jordan’s small market and head start in renewable energy means it will reach these hurdles to solar deployment probably before any other country in the region. Its success in devising policies to continue attracting capital, boosting its renewable generation, local employment and electricity exports, while reducing consumer bills, will be an important signal for its neighbours.
This is particularly true for countries in the Arabian Gulf – whose utility companies are thinking about how to overcome similar barriers to their bold renewable plans. Such complementary resources and opportunities open the space for co-operation between these two regional allies.
Robin Mills is CEO of Qamar Energy and author of The Myth of the Oil Crisis.
You may have seen a variant of this meme before. A map of North Africa is shown, with a surprisingly small box somewhere in Libya or Algeria shaded in. An area of the Sahara this size, the caption will say, could power the entire world through solar energy:
Over the years various different schemes have been proposed for making this idea a reality. Though a company called Desertec caused a splash with some bold ideas a decade ago, it collapsed in 2014 and none of the other proposals to export serious amounts of electricity from the Sahara to Europe and beyond are anywhere close to being realised.
It’s still hard to store and transport that much electricity from such a remote place, for one thing, while those people who do live in the Sahara may object to their homeland being transformed into a solar superpower. In any case, turning one particular region into a global energy hub risks all sorts of geopolitical problems.
The Imagine newsletter aims to tackle these big “what if” questions, so we asked a number of academics to weigh in on the challenges of exploiting the cheapest form of electricity from perhaps the cheapest and best spot on Earth.
Sahara has huge energy potential
Amin Al-Habaibeh is an engineer at Nottingham Trent University who has researched various options for Saharan solar.
He points to the sheer size and amount of sunshine the Sahara desert receives:
It’s larger than Brazil and slightly smaller than the US.
If every drop of sunshine that hits the Sahara was converted into energy, the desert would produce enough electricity over any given period to power Europe 7,000 times over.
So even a small chunk of the desert could indeed power much of the world, in theory. But how would this be achieved?
Al-Habaibeh points to two main technologies. Both have their pros and cons.
Concentrated solar power uses lenses or mirrors to focus the sun’s energy in one spot, which becomes incredibly hot. This heat then generates electricity through a steam turbine.
In this image the tower in the middle is the “receiver” which then feeds heat to a generator:
Some systems store the heat in the form of molten salt. This means they can release energy overnight, when the sun isn’t shining, providing a 24h supply of electricity.
Concentrated solar power is very efficient in hot, dry environments, but the steam generators use lots of water.
Then there are regular photovoltaic solar panels. These are much more flexible and easier to set up, but less efficient in the very hottest weather.
Overall, Al-Habaibeh is positive:
Just a small portion of the Sahara could produce as much energy as the entire continent of Africa does at present. As solar technology improves, things will only get cheaper and more efficient. The Sahara may be inhospitable for most plants and animals, but it could bring sustainable energy to life across North Africa – and beyond.
Solar panels could have remarkable impact on the desert though
Installing mass amounts of solar panels in the Sahara could also have a remarkable impact on the desert itself.
The Sahara hasn’t always been dry and sandy. Indeed, archaeologists have found traces of human societies in the middle of the desert, along with prehistoric cave paintings of Savannah animals. Along with climate records, this suggests that just a few thousand years ago the “desert” was far greener than today.
Alona Armstrong, an environmental science lecturer at Lancaster University, wrote about a fascinating study in 2018 that suggested massive renewable energy farms could make the Sahara green again.
This may be a nice side effect of a huge Saharan solar plant, but it doesn’t necessarily mean it should happen. As Armstrong points out:
These areas may be sparsely populated but people do live there, their livelihoods are there, and the landscapes are of cultural value to them. Can the land really be “grabbed” to supply energy to Europe and the Middle East?
Is this climate colonialism?
If we want to deploy millions of solar panels in the Sahara, then who is “we”? Who pays for it, who runs it and, crucially, who gets the cheap electricity?
This is what worries Olúfẹ́mi Táíwò, a philosopher who researches climate justice at Georgetown University. He mentions Saharan solar power as one of the possible policies involved in a Green New Deal, a wide-ranging plan to enact a “green transition” over the next decade.
He points out that exports of solar power could: “Exacerbate what scholars like sociologist Doreen Martinez call climate colonialism – the domination of less powerful countries and peoples through initiatives meant to slow the pace of global warming.”
While Africa may have abundant energy resources, the continent is also home to the people who are the least connected to the grid.
Solar exports risk “bolstering European energy security … while millions of sub-Saharan Africans have no energy of their own.”
What if we’re looking at the wrong desert?
All of this will be moot if Saharan solar never actually happens. And Denes Csala, a lecturer in energy systems at Lancaster University, is sceptical.
It’s true that much of the world’s best solar resources are found in the desert. Here’s a graph from his PhD research which shows how Saharan nations dominate:
But Denes says that we’re looking at the wrong desert. In fact, the countries of the Arabian peninsula are better placed to exploit the sun. He argues several factors work in favour of Saudi Arabia, the UAE and co:
They have a history of exporting oil.
In the energy market, worries over security of supply means countries tend to do business with the same partners over time.
Ports, pipes and other infrastructure that have been built to ship oil and gas could be repurposed to ship solar energy as hydrogen.
[Energy security] would be the Achilles heel of a northern African energy project: the connections to Europe would likely be the continent’s single most important critical infrastructure and, considering the stability of the region, it is unlikely that European countries would take on such a risk.
It would be fair to say academics have mixed views about the idea of mass Saharan solar. While the energy potential is obvious, and most of the necessary technology already exists, in the long run it may prove too complicated politically.
Still think this is all fantasy?
Maybe Europeans should look closer to home. The UK Planning Inspectorate is currently examining the Cleve Hill solar farm proposal in Kent, which would involve installing nearly a million solar panels across a marshland site the size of 600 football pitches. To protect against flooding, the panels would be mounted several metres in the air. If built, despite opposition from locals and conservationists, Cleve Hill would be by far the country’s largest solar farm and about the same size as Europe’s largest, near Bordeaux.
Alastair Buckley from the University of Sheffield points out the project would be groundbreaking as, unlike other ventures of this kind, it doesn’t rely on subsidies. With solar power getting ever cheaper, Cleve Hill – if it happens – seems to mark the moment when solar may start paying for itself – even far from the world’s deserts.
Imagine is a newsletter from The Conversation that presents a vision of a world acting on climate change. Drawing on the collective wisdom of academics in fields from anthropology and zoology to technology and psychology, it investigates the many ways life on Earth could be made fairer and more fulfilling by taking radical action on climate change. You are currently reading the web version of the newsletter.
5th June is a platform for action environment day every year. This day reminds us of the urge to protect our environment. In order to encourage worldwide awareness to save our beautiful and green planet, on this day, hundreds of organizations and millions of civilians will urge governments, industries, communities, and individuals to come together and raise awareness to keep our planet safe place.
Planet Earth is a beautiful place. It’s also the only planet we have, and we want to make sure that we do what needs to be done to keep it safe, healthy, cared for, and respected.
Humans are the only creatures on Earth that will cut down a tree, turn it into paper, then write “save the trees “on it. Imagine if the trees would give off WiFi signals, we would be planting so many trees and we’d probably save the planet too. It’s not your personal toy, nor mine. It is ours! So, protect the mother who nourishes you. Plants can survive without humans, but humans can not survive without plants. Environment day means to protect all the natural sources, plants, water, forests etc…
We never know the worth of water till the well is dry, the water in your toilet is cleaner than what nearly a billion people have to drink elsewhere on the same Earth.
Try to keep this blessing safe from pollution. Think green, stay healthy, and save this wealth. To live in a beautiful and clean environment.
Happy Environment day!
Trash: A major Environmental Issue in Libya
One of the most annoying and serious environmental issues in Libya is the crisis trash. The clean environment brings fresh air and saves nature. Our nature needs to be protected for a healthy life, and for us and for the animals. The ignorance of such an issue will always increase the danger that we give to our country and with no doubts will enhance the cause of diseases. No one ever wants to walk down the streets and passes trashes. No one wants to kick cans and plastics bottles while walking on shores. For years now, neither the government nor the people, or even the waste companies could find an ending solution for this trouble. The streets in the capital are almost full of trashes. The roads, pavements, in front of schools and near the blocks of flats all have piles of trash. The scenery cannot be bearable anymore and it does not show the area in an urban view.
Despite the individual attempts to fix this issue in the capital; Tripoli, this trouble has no end. People do not have any ideas about where to put their garbage, as a result, the waste solids are thrown everywhere. I have noticed while I was walking in the streets that those who live in houses they put their garbage near their houses with hope the waste companies come and collect it. Others who live in flats they throw it down the building or near the streets. Some they are just satisfied with throwing the trash wherever they could put it- on the pavements, near the beaches or wherever they can put trashes.
Consequently, the government does not try to recycle or export plastic or paper waste, so they are starting to pile up randomly. And for sure, this is not a pretension to put the trash anywhere but there is no another way. This scene we see every day at our streets, in front of our schools, universities, near our gardens, in the highways, on beaches and almost at every single step we take. We see cans, papers and plastic rubbish are thrown with no care about nature, the heath, or even showing any ethical value for doing such a horrible thing. The serious solution should be taken before making this trouble more dangerous. This is a dangerous threat of many living species on our land. Not all of us know how this trash we throw ends up. Plastic needs a long time to be mouldered. Plastic can float on the surface of the sea for centuries! Plastic can be eaten by any animals accidentally and animals cannot digest plastic which it stays in their stomach and intestines for years until it causes for their death.
Although we need to use these materials; paper, plastic, iron cans … etc. for our daily life, using such materials improperly will lead to damage the environmental balance. We create these materials, we need them and we are responsible for any harm we cause. Our nature and animals do not need the paper or plastic, so we must not throw them randomly everywhere and ask nature to just simply use them or let the animals eat them. In other words, humans need nature very much, without it we cannot succeed to keep our life on the planet. Ignorance or contributing of throwing the trash at inappropriate places is a crime against our nature, our lands and our health.
To sum up, we are destroying our nature with no worries. In Libya, trash is estimated to kills our environment and we help to damage it. It is not an excuse that we cannot find a solution. We can have special places to collect the whole trash at. Or we can start to export it to other countries where we can recycle it and use it for other things. Recycling is one of the perfect solutions and the most protective one. On the other hand, we need to take a series of action towards this and help our environment.