Tag: Coal

  • The roadmap of a renewable future

    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

  • Renewable Energy – The Precise Facts to Know

    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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