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Tag: wind
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The roadmap of a renewable future
Energy systems have been transformed by regulation and the progress of technology. Global awareness of climate change will only accelerate this trend, increasing the rate of growth of alternatives to fossil fuels the world over.
Renewables are playing an expanding role in the global energy transition and will continue to reshape electricity markets. With low marginal cost and priority feed-in to grid systems, renewables can squeeze conventional generators out of the market and drive severe short-term price swings.
The effect remains marginal but, as soon as the share of renewable energy in the power mix reaches critical mass, it can bring serious disruption. This is already the case in some European countries, such as Germany and the UK, and will impact coal generation in the US from 2020 and gas generation in Europe beyond 2025.
Global supply growth for renewables is the fastest in the energy mix, reaching an average of 7% per year between 2015 and 2035 for wind and 11% for solar. These positive figures cannot hide the fact that their rapid increase is from a relatively low base, but renewables have often surprised to the upside in recent years – a trend which could continue.
Global growth differs by location due to different climate conditions and the ability of technologies to suit the needs of local populations. In geographically-advantaged countries, the share of renewables in the power mix grows exponentially. India, for example, has ambitious solar targets and we expect an increase from 3% of total power generating capacity in 2015 to more than 35% in 2035.
Meanwhile, wind power remains the prerogative of developed and mature markets (with the exception of China). As fossil fuels and nuclear use slowly decline in Western Europe, we expect wind to become the largest source of electricity by 2030 at around 21%.
Asia will also see renewables develop steadily, driven by a will to cut CO2 emissions in the mature markets of Japan, South Korea and Taiwan, or as a result of a steep increase in power demand in the case of South East Asia.
In China, despite slower power demand growth, solar and wind will develop at a fast pace, reaching 7% and 18% of total electricity output respectively. We also forecast nuclear output to expand here more than tenfold between 2015 and 2035 – a stark contrast to many other countries, where nuclear remains unpopular.
With technology continually improving, renewables are no longer simply regarded as the expensive green option but are now considered serious competition. It’s clear that renewable energy is in a strong position to force the market to reshape.
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https://www.woodmac.com/analysis/renewable-roadmap-2035
On – 12 Apr, 2017 By Wood Mackenzie
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Renewable Energy – The Precise Facts to Know
In a simple word, renewable energy comes from natural cycles and systems, turning the ever-present energy around us into functional forms. Renewable (alternative) energy is mostly cleaner than energy from nonrenewable options such as natural gas, petroleum, and coal. But right now in the U. S. over many of these of our energy still comes from nonrenewable resources.
Such as the name says, green energy can be refilled continuously. Its sources include radiant energy like sun, thermal energy like geothermal, chemical processes like biomass, gravitational energy like hydropower, and motion energy like wind.
A few of the key sources of power include:
Solar
Solar electricity is able to one day solve much of the energy needs, but that day is still very remote. Still, solar technology has become more efficient and cost-effective every year, and it is the fastest-growing kind of renewable energy.
Wind
Wind power is one of the greenest technologies, and also one of the most abounding and cost-competitive energy resources, rendering it a viable option to the non-renewable powers that harm our health and threaten the environment. Yet wind power is unreliable as a frequent source of electricity, impacts great tracts of land, and it is unavailable where wind is intermittent.
Hydro
Harnessing the kinetic power of moving normal water to generate electricity is the major source of renewable power in the USA and worldwide. Hydropower can be a sustainable and nonpolluting power source that can help decrease our dependence on fossil fuels and minimize the threat of global warming, but is limited to areas with large and regular drinking water supplies.
Bio-fuels
Ethanol is the product of crops full of sugar or starch, while biodiesel is the product of crops with high essential oil content. Both are natural carbon fuel, and both provide practical powers which may have not yet reached their full probable. Scientists continue refining food stocks to obtain higher efficiencies.
Geothermal
Heat from the earth, or geothermal energy, is cost effective, reliable, and clean, but is mostly limited to areas near tectonic plate limits. Some progress has recently been made recently in broadening the range of geothermal resources, but geothermal electric power remains a limited solution to our energy needs.
Ocean
Another form of kinetic power technology, the ocean’s frequent motion by way of dunes, tides, and currents is an effective and clean energy resource. Like other hydro power, though, its geographic range is limited.
Renewable Energy and Environment/Climate Change –
There is general arrangement among the world’s major economies that it is essential to reduce carbon dioxide emissions by 50% by 2050. And with energy-related Carbon Dioxide accounting for 61 percent of global greenhouse gas emissions today, the energy sector must be at the heart of change.
Europe is committed to a 30 percent reduction by the year 2020 and a 60 to 80 percent decline by 2050, under stipulation that additional developing nations also obligate. To accomplish the things, it will require a huge sum of USD 22 trillion in global energy investments over the next 25 to 30 years.
http://greenhoper.net/info/renewable-energy-the-precise-facts-to-know/
On – 10 Feb, 2017 By greenhoper
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The world’s largest wind farm is up and running…
This wind farm has turbines that are 640 feet tall with 262 foot long blades built by Dong Energy. These turbines are bigger than some skyscrapers (Image via MHI Vestas)
The world’s largest wind farm is now up and running in the UK. The 32 huge turbines built by Danish company Dong Energy are housed in Liverpool Bay. The turbines boast a greater height than some skyscrapers standing at 640 feet tall and equipped with 262-foot long blades, which can produce eight megawatts of power. This is actually the first time 8MW turbines have been used for commercial purposes. Their power is supposed to be so great the company claims a single revolution of the blade can power one house for 29 hours.
The 32 new turbines are an extension of the Burbo Bank wind farm that was built over a decade ago. This latest addition makes Britain a world leader in wind farm technology. Because of subsidies, friendly regulation, and their maritime past, the UK have installed more offshore wind power than any other country in the world. This latest addition along with their existing structures give them the capacity of 5.3 GW, that’s enough electricity to power 4.3 million homes. And it doesn’t stop here; there are eight more projects in the works.
But to keep receiving support for the tech from the government, the industry has to keep cutting costs. This in part is why Dong Energy opted to build such large turbines. You would think the cost to maintain these things would be high considering how big they are. Believe it or not, these large turbines are cheaper to build and maintain since each tower and blade needs a foundation. In the end, it’s cheaper than maintaining lots of small turbines. The company hopes this leads to offshore wind power that’s bigger, better, and cheaper than before.
These wind turbines greatly benefit the UK, but they’ve still come under fire for not having enough parts made in Britain. Dong Energy doesn’t exactly help matters; they don’t reveal what how much of the Burbo Bank extension is UK built. Fortunately, half of the blades are made at MHI Vesta’s Isle of Wight factory. On the other hand, these farms create new jobs and offer residents a long term career.
Still, you can’t argue with results, and the UK seems pretty pleased overall. There are more wind turbine projects scheduled for the future; these will also use 8MW turbines. It seems the UK is set on keeping its reputation as a world leader in windfarm technology. They’re certainly ahead of the US, which recently installed its first offshore wind farm.
On – 25 May, 2017 By Cabe Atwell
