Some Amazing Renewable Energy Ideas for the Future
RENEWABLE ENERGY. We’re committed to finding innovative ways to turn everyday waste into alternative energy. REDEFINING OUR APPROACH. Through our gas-to-energy landfills and our solar initiatives, we're able to maximize the capture of energy from our landfills and create renewable fuels that power our trucks. Wind power represents % of Canada's total renewable energy capacity, with many optimal locations for wind energy across Canada and an installed wind capacity of 12, MW. Wind power generation does not generate GHG emissions and has no fuel cost. In remote Canadian communities projects with wind-diesel hybrid systems have shown limited success over the past 25 years.
Renewable energy is energy from sources we cannot run out of. Some types of renewable energy, yow wind and solar power, come from sources that are not depleted when used.
Others, like biomass, come from sources that can be replenished. Common types of renewable energy are wind, solar, hydropower, biomass and geothermal. Renewable energy has two advantages over the fossil fuels that provide most of our energy today. First, there is a limited amount of fossil how to generate renewable energy resources like coal, oil and natural gas in the world, and if we use them all we cannot get any more in our lifetimes.
Second, renewable energy produces far less rfnewable dioxide CO 2 and other rnergy greenhouse gases and pollutants. Most types of renewable energy produce no CO 2 at all how to generate renewable energy they are running.
For this reason, renewable energy is widely viewed as playing a central role in climate change mitigation and a clean energy energu. But not all renewable energy is carbon-free, and not all carbon-free energy is renewable. Biofuels renewabke bioenergy are renewable: we can regrow plants that we burn for fuel. But they are not necessarily carbon-free. Growing plants absorbs CO 2 ; burning plants releases CO 2. The total impact on CO 2 in the atmosphere depends on how sustainably the bioenergy is produced.
Nuclear energy is carbon-free: a nuclear power plant does not emit any CO 2or any other greenhouse gases. But it is not renewable. Nuclear reactors use uranium, and if we run out of uranium, we can never get it back. Some types of renewable energy can provide fuel for transportation e. What does wrt mean in math, most renewable energy is used to make electricity.
Renewable energy presents great challenges and opportunities for electricity generation. This can cause problems for system operators, particularly when there is a mismatch between the amount of electricity demanded and the amount of wind or sun available. Another challenge is that the best places to generate renewable energy are often far away from the areas that use that electricity.
For these reasons, adding much more renewable energy to our electric grid will require other changes, renewab,e more energy storagebackup generation, strategies to match electricity use with times of high power generation, and infrastructure for long-distance power jow. Renewable energy also needs to compete with well-established and cheap fossil fuels. Globally, wind and solar electricity grew from just 32 terawatt-hours in to 1, terawatt-hours in more than enough to power the energg country of India.
How much of our energy hwo ultimately get from renewables will also depend on their ability to compete with other low-carbon technologies, such as nuclearcarbon capture and storage and hydrogen. New to Climate Change? Renewable vs. Photo Credit. Related MIT Groups. MIT Energy Initiative. More Resources for Learning. Energy Information Administration: "Renewable energy explained". Department of Energy: "Clean energy". Renewable Energy. Want to learn more?
Keep exploring. With more Explainers from our geenerate. Energy storage is technology that holds energy at one time so it can be used at another time. Cheap and abundant energy storage is a key challenge for a low-carbon energy system.
Nuclear energy is low-carbon energy made by breaking the bonds that hold particles together inside enegy atom. Carbon capture and storage is a technology that captures the carbon dioxide from burning fossil fuels before it is released to the atmosphere.
Our solar programs help community groups and individuals reduce energy bills and move toward cleaner energy sources. For community groups The Solar Electricity for Community Buildings Program is a three-year pilot program that helps community groups generate solar power and sell it to their utility. Mar 16, · Bladeless turbines that waggles like a dashboard toy could be the wind-harnessing tool of the future as they move within the range of vibration of the wind to generate electricity. May 10, · A heat exchanger can use energy from the heat of the earth’s core and from solar energy that is absorbed at the surface. To use this energy, holes are drilled into the ground and fitted with long pipes that pump cold water into the ground that is heated and later used to heat your home.
Larry West is an award-winning environmental journalist and writer. He won the Edward J. Meeman Award for Environmental Reporting. Many nations count on coal, oil and natural gas to supply most of their energy needs, but reliance on fossil fuels presents a big problem.
Fossil fuels are a finite resource. Eventually, the world will run out of fossil fuels, or it will become too expensive to retrieve those that remain. Fossil fuels also cause air, water and soil pollution, and produce greenhouse gases that contribute to global warming.
Renewable energy resources offer cleaner alternatives to fossil fuels. They are not completely problem-free, but they produce much less pollution and fewer greenhouse gases, and by definition, will not run out. Here are our main sources of renewable energy:. The sun is our most powerful source of energy. Sunlight, or solar energy, can be used for heating, lighting and cooling homes and other buildings, generating electricity, water heating, and a variety of industrial processes.
The technology used to harvest the sun's energy is constantly evolving, including water-heating rooftop pipes, photo-voltaic cells, and mirror arrays.
Rooftop panels are not intrusive, but large arrays on the ground can compete with wildlife habitat. Wind is the movement of air that occurs when warm air rises and cooler air rushes in to replace it.
The energy of the wind has been used for centuries to sail ships and drive windmills that grind grain. Today, wind energy is captured by wind turbines and used to generate electricity. Issues periodically arise about where turbines are installed, as they can be problematic for migrating birds and bats. Water flowing downstream is a powerful force.
Water is a renewable resource, constantly recharged by the global cycle of evaporation and precipitation.
The heat of the sun causes water in lakes and oceans to evaporate and form clouds. The water then falls back to Earth as rain or snow and drains into rivers and streams that flow back to the ocean. Flowing water can be used to power water wheels that drive mechanical processes. And captured by turbines and generators, like those housed at many dams around the world, the energy of flowing water can be used to generate electricity.
Tiny turbines can even be used to power single homes. While it is renewable, large-scale hydroelectricity can have a large ecological footprint. Biomass has been an important source of energy ever since people first began burning wood to cook food and warm themselves against the winter chill. Wood is still the most common source of biomass energy, but other sources of biomass energy include food crops, grasses and other plants, agricultural and forestry waste and residue, organic components from municipal and industrial wastes, even methane gas harvested from community landfills.
Biomass can be used to produce electricity and as fuel for transportation, or to manufacture products that would otherwise require the use of non-renewable fossil fuels. Hydrogen has tremendous potential as a fuel and energy source. Hydrogen is the most common element on Earth—for example, water is two-thirds hydrogen—but in nature, it is always found in combination with other elements.
Once separated from other elements, hydrogen can be used to power vehicles, replace natural gas for heating and cooking, and generate electricity.
In , the first production passenger car powered by hydrogen became available in Japan and the United States. The heat inside the Earth produces steam and hot water that can be used to power generators and produce electricity, or for other applications such as home heating and power generation for industry.
Geothermal energy can be drawn from deep underground reservoirs by drilling, or from other geothermal reservoirs closer to the surface. This application is increasingly used to offset heating and cooling costs in residential and commercial buildings.
The ocean provides several forms of renewable energy, and each one is driven by different forces. Energy from ocean waves and tides can be harnessed to generate electricity, and ocean thermal energy—from the heat stored in seawater—can also be converted to electricity. Using current technologies, most ocean energy is not cost-effective compared to other renewable energy sources, but the ocean remains an important potential energy source for the future.