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renewable energy

Renewable energy is energy that is collected from renewable resources that are naturally replenished on a human timescale. It includes sources such as sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy stands in contrast to fossil fuels, which are being used far more quickly than they are being replenished. Although most renewable energy sources are sustainable, some are not. For example, some biomass sources are considered unsustainable at current rates of exploitation.Renewable energy often provides energy in four important areas: electricity generation, air and water heating/cooling, transportation, and rural (off-grid) energy services. About 20% of humans' global energy consumption is renewables, including almost 30% of electricity. About 8% of energy consumption is traditional biomass, but this is declining. Over 4% of energy consumption is heat energy from modern renewables, such as solar water heating, and over 6% electricity.Globally there are over 10 million jobs associated with the renewable energy industries, with solar photovoltaics being the largest renewable employer. Renewable energy systems are rapidly becoming more efficient and cheaper and their share of total energy consumption is increasing, with a large majority of worldwide newly installed electricity capacity being renewable. In most countries, photovoltaic solar or onshore wind are the cheapest new-build electricity.Many nations around the world already have renewable energy contributing more than 20% of their energy supply, with some generating over half their electricity from renewables. National renewable energy markets are projected to continue to grow strongly in the coming decade and beyond.
A few countries generate all their electricity using renewable energy.
Renewable energy resources exist over wide geographical areas, in contrast to fossil fuels, which are concentrated in a limited number of countries. Deployment of renewable energy and energy efficiency technologies is resulting in significant energy security, climate change mitigation, and economic benefits. However renewables are being hindered by hundreds of billions of dollars of fossil fuel subsidies. In international public opinion surveys there is strong support for promoting renewable sources such as solar power and wind power.While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas and developing countries, where energy is often crucial in human development. As most of the renewable energy technologies provide electricity, renewable energy is often deployed together with further electrification, which has several benefits: electricity can be converted to heat, can be converted into mechanical energy with high efficiency, and is clean at the point of consumption. In addition, electrification with renewable energy is more efficient and therefore leads to significant reductions in primary energy requirements. In 2021, China accounted for almost half of the increase in renewable electricity. In 2021, Norway, known for its production of hydroelectricity, consumed hydro energy worth 45% of its total energy supply.

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  1. soltenviva

    Looking for optimal route into domestic renewable energy

    Hi. I’m Steven, based in Brighton and looking at retraining in renewables long term but looking at the best options in the immediate future with regards to different training routes for plumbing and basic electrical principles. I followed some threads on here related to companies that offer...
  2. S

    Renewable energy, alternate fuels.

    Gas boilers are great at the moment however in the not to distant future the need for an alternate fuel source will be inevitable. I understand Ground source heat pumps, air source, biomass etc are current alternatives however I personally feel these lack the practicality and performance needed...
  3. Dan

    Find a Renewable Energy Specialist - Solar Thermal, Ground Source Heat Pumps etc

    Find a renewable energy specialist. Ground-source heat pump installers. Biomass pallet and log boiler installers. Air and ground-source heat pump specialists. Find your local renewables specialists right here on the UK's largest plumbing advice website. Post a new thread in this forum category...
  4. W

    Renewable energy

    What will happen to boilers? All new homes to run on green power by 2016 - Green Living - Environment - The Independent
  5. K

    ATL Domestic Renewable Energy Engineer - Course for Sale

    ATL PRACTICAL TRAINING -Domestic Renewable Energy Engineer I signed up for this course but due to a change in job have not got the time to finish it. I am now moving to Australia so will not get a chance to do the course. I am therefore willing to sell it for half the cost. It will...
  6. T

    The great renewable energy swindle

    Read a post a few minutes ago saying that new builds wouldn't have gas appliances after 2016. Ridiculous. Is It just me here who thinks renewable's are a total con? with a few exceptions. I would love to know the exact carbon foot print of making a PV panel or perhaps a solar HW panel or any...
  7. J

    Starting career in renewable energy?

    Hi im currently 20 years old and have done my technical certificate city and guilds level 2 & 3 in domestic heating in college and have recently started a course with ATL practical training doing my NVQ level 2 in plumbing and doing my Domestic Renewable energy engineer with PV.... i was just...
  8. D

    Renewable energy engineer student looking for work experience (plumbers mate)

    Renewable energy engineer student looking for work experience (plumbers mate)I'm currently studying Domestic Renewable Energy Engineering with the training provider Train 4 Trade Skills. Im looking for full time or part time work experience within the london area. Throughout my course I will...
  9. D

    Renewable energy engineer student looking for work experience (plumbers mate)

    I'm currently studying Domestic Renewable Energy Engineering with the training provider Train 4 Trade Skills. Im looking for full time or part time work experience within the london area. Throughout my course I will attain the following qualifications and carry the MCS Mark : * C&G6189-11...
  10. B

    renewable energy

    whats the best renuable energy course to do? many thanks
  11. S

    Work needed

    Hello All I have recently finished a number of qualifications and am now looking for employment in the Surrey area if anyone is looking to take someone on then please get in touch. I'm 30 years old, professional & reliable and would be happy to work for free initially to prove this! I have...
  12. spanner

    single channel programmer probs( Potterton Baxi28HEplus)

    Bought a single channel programmer and have also fiited the wiring centre. Now I think I must have missed a wire out or something. Wired from the existing 3amp fused spur have live neutral earth(123)to wiring centre and in (4) have the wire from live room stat(BROWN) to number (3) swtch live to...
  13. U

    Grants cut for renewable energy

    well the government have started their rounds of cuts, and one of the first to suffer is the Low Carbon Building Program phase 1 (LCBP1) As of 6 am on the 24th of May 2010. This means that there are no more grants for renewable technologies, in England...
  14. justlead1

    Renewable, your thoughts

    Hi. Chatting with various trades installing renewables, has suggested individuals are loosing work on both domestic and commercial properties. As skills and knowledge are limited to their specific trade. Clients want to sign one contract to cover all the proposed renewables. If this is the...
  15. R

    Rainwater Harvesting

    Hi all I would like to see a section dedicated to rainwater harvesting. Apart from the fact that I'm thinking about setting up some sort of system in my house and would like to hear peoples tips/advice/experiences,I think its getting more relevant for plumbers now Cheers rocky:)
  16. C

    t4t skills scenario 3

    Wondering if any one could help,as you proberbly well know the scenarios to say the least are driving me mental,can any one tell me is the sytem check both hot and cold and where do you start your soundness check.PLEASE HELP:confused:
  17. F

    Renewable energy

    Does anyone know of any companies offering distance learning or part time (weekends pref) to gain the relevant qualification to qualify for the microgeneration certification in renewable energy. Looking for solar, rainwater harvesting, ground/air source, poss photovoltaic. Any help would be...
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