Footer

    Download on the App StoreGet it on Google Play

    About

    • About Us
    • Our Learning Services
    • Join Us
    • FAQ
    • Hot Tags

    Services

    • Pronunciation Challenge
    • Saved
    • Search Vocabulary
    • Blog

    Channels

    Levels

    • A1
    • A2
    • B1
    • B2
    • C1
    • C2

    Privacy˙Terms˙
    ©2026 VoiceTube Corporation. All rights reserved

    solar energy

    US /ˈsolɚ ˈɛnədʒi/

    ・

    UK /ˈsəulə ˈenədʒi/

    B1
    n. (u.)Uncountable NounEnergy derived from the sun in the form of solar radiation.
    Solar energy is a clean and renewable source of power.

    Video subtitles

    How solar energy got so cheap

    06:31How solar energy got so cheap
    • Solar energy is the cheapest it's ever been⏤nearly 90% cheaper than it was just in 2009.

      Solar energy is the cheapest it's ever been⏤nearly 90% cheaper than it was just in 2009.

    • So, how did solar energy go from prohibitively expensive to cheaper than fossil fuels?

      So, how did solar energy go from prohibitively expensive to cheaper than fossil fuels?

    B1

    What is the impact of lithium mining? | BBC News

    08:19What is the impact of lithium mining? | BBC News
    • Lithium mined here is an essential component of the batteries that power electric cars and solar energy stores.

      Lithium mined here is an essential component of the batteries that power electric cars and solar energy stores.

    • Lithium mined here is an essential component of the batteries that power electric cars and solar energy stores.

      Lithium mined here is an essential component of the batteries that power electric cars and solar energy stores.

    B1

    元ニューヨーク都市計画者だけど質問ある? | Tech Support | WIRED Japan

    11:36元ニューヨーク都市計画者だけど質問ある? | Tech Support | WIRED Japan
    • They take solar energy and they turn it into biomass,

      They take solar energy and they turn it into biomass,

    • They take solar energy, and they turn it into biomass.

      They take solar energy, and they turn it into biomass.

    A2

    Stanford Roundtable 2014: The climate conversation you haven’t heard

    27:46Stanford Roundtable 2014: The climate conversation you haven’t heard
    • And in more and more places, not just cars, but in renewable energy with wind energy being cheaper than fossil fuel in many places, solar energy dropping to parity, I think we're going to see that happening irregardless of whether people are fixated on the negativity of the climate change.

      And in more and more places, not just cars, but in renewable energy with wind energy being cheaper than fossil fuel in many places, solar energy dropping to parity, I think we're going to see that happening irregardless of whether people are fixated on the negativity of the climate change.

    • I'd be pessimistic if we didn't have enough solar energy in absolute abundance or enough wind energy or hydro or geothermal.

      I'd be pessimistic if we didn't have enough solar energy in absolute abundance or enough wind energy or hydro or geothermal.

    B1

    YOU ONLY HAVE ONE CHANCE | OneShot - Part 1

    33:57YOU ONLY HAVE ONE CHANCE | OneShot - Part 1
    • And that's literally all they have for solar energy.

      And that's literally all they have for solar energy.

    • And that's literally all they have for solar energy.

      And that's literally all they have for solar energy.

    B1

    Bill Gates on the need for climate innovators

    02:38Bill Gates on the need for climate innovators
    • solar energy, prices are coming down, so the electricity sector has to either be able to store that energy or have other zero-emission sources to maintain the reliability that we all depend on.

      solar energy, prices are coming down, so the electricity sector has to either be able to store that energy or have other zero-emission sources to maintain the reliability that we all depend on.

    • wind energy and solar energy prices are coming down.

      wind energy and solar energy prices are coming down.

    B1

    Why Are There Clouds?

    03:15Why Are There Clouds?
    • Cumulus clouds, for example, get their start when solar energy evaporates water from oceans, plants, and

      Cumulus clouds, for example, get their start when solar energy evaporates water from oceans, plants, and

    • when solar energy evaporates water from oceans, plants, and soil by breaking the bonds that

      when solar energy evaporates water from oceans, plants, and soil by breaking the bonds that

    B2

    Solar panel imports spike across Africa | BBC News

    04:23Solar panel imports spike across Africa | BBC News
    • So if we're able to change this and introduce solar energy to be able to bridge this gap, then we're going to see a huge change in the factors of production, which is going to make energy access be more accessible, more affordable, more reliable, and definitely more deployable.

      So if we're able to change this and introduce solar energy to be able to bridge this gap, then we're going to see a huge change in the factors of production, which is going to make energy access be more accessible, more affordable, more reliable, and definitely more deployable.

    • So if we're able to change this and introduce solar energy to be able to be able to bridge this gap, then we're going to see a huge change in the factors of production, which is going to make energy access be more accessible, more affordable, more reliable, and

      So if we're able to change this and introduce solar energy to be able to be able to bridge this gap, then we're going to see a huge change in the factors of production, which is going to make energy access be more accessible, more affordable, more reliable, and

    B1

    All About Hydroelectricity

    01:56All About Hydroelectricity
    • A few of the advantages of hydroelectricity are that it is renewable, it provides consistent power, and like solar energy and wind turbines, it does not release any pollutants into the air.

      A few of the advantages of hydroelectricity are that it is renewable, it provides consistent power, and like solar energy and wind turbines, it does not release any pollutants into the air.

    • and like solar energy and wind turbines, it does not release any pollutants into the air.

      and like solar energy and wind turbines, it does not release any pollutants into the air.

    B2

    Why EU’s Tariffs Won’t Stop Chinese EVs

    11:55Why EU’s Tariffs Won’t Stop Chinese EVs
    • to convert to solar energy, the best thing you can do is bring in as many panels as you possibly can and install them everywhere.

      to convert to solar energy, the best thing you can do is bring in as many panels as you possibly can and install them everywhere.

    • to convert to solar energy, the best thing you can do is bring in as many panels as you possibly can and install them everywhere.

      to convert to solar energy, the best thing you can do is bring in as many panels as you possibly can and install them everywhere.

    B1