Should you switch to solar? - Shannon Odell

393,740 views ・ 2023-06-22

TED-Ed


μ•„λž˜ μ˜λ¬Έμžλ§‰μ„ λ”λΈ”ν΄λ¦­ν•˜μ‹œλ©΄ μ˜μƒμ΄ μž¬μƒλ©λ‹ˆλ‹€.

λ²ˆμ—­: λ‹€ν˜œ 이 κ²€ν† : DK Kim
00:07
In the spring of 1954,
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1954λ…„ λ΄„,
00:09
the press excitedly gathered around Bell Laboratories’ latest inventionβ€”
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벨 μ—°κ΅¬μ†Œμ˜ μ΅œμ‹  발λͺ…ν’ˆμ„ 보러 κΈ°μžλ“€μ΄ ν₯λΆ„ν•΄μ„œ λͺ°λ € λ“€μ—ˆμŠ΅λ‹ˆλ‹€.
00:14
a silicon-based solar cell that could efficiently convert
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λ°”λ‘œ μ‹€λ¦¬μ½˜ νƒœμ–‘ 전지인데
νƒœμ–‘ μ—λ„ˆμ§€λ₯Ό 효율적으둜 μ „κΈ° μ—λ„ˆμ§€λ‘œ λ°”κΏ€ 수 μžˆμ—ˆμŠ΅λ‹ˆλ‹€.
00:18
the sun's energy into electrical current.
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00:22
The creation was celebrated as the dawn of a new era,
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κΈ°μžλ“€μ€ μƒˆ μ‹œλŒ€κ°€ μ—΄λ Έλ‹€κ³  κ·Ήμ°¬ν•˜λ©°
00:26
as reporters touted that civilization would soon
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κ³§ 인λ₯˜ λ¬Έλͺ…은 νƒœμ–‘μ˜ λ¬΄ν•œν•œ μ—λ„ˆμ§€λ₯Ό λˆ„λ¦΄ 거라고 크게 λ°œν‘œν–ˆμŠ΅λ‹ˆλ‹€.
00:29
run on the sun’s limitless energy.
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00:32
But the dream had a catch, as this first commercially sold solar cell
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ν•˜μ§€λ§Œ 이 ν¬λ§μ—λŠ” λ¬Έμ œκ°€ μžˆμ—ˆλŠ”λ°
이 졜초 νƒœμ–‘ μ „μ§€μ˜ 가격은 μ™€νŠΈλ‹Ή 300λ‹¬λŸ¬μ˜€μŠ΅λ‹ˆλ‹€.
00:37
cost around $300 per watt,
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00:40
meaning at its current rate,
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μš©λŸ‰μ„ λ”°μ Έ 보면 백만 λ‹¬λŸ¬λ₯Ό 훨씬 λ„˜κ²Œ λ“€μ—¬μ•Ό
00:42
it would cost well over a million to buy a unit large enough
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μ§‘ ν•œ 채에 ν•„μš”ν•œ μ „κΈ°λ₯Ό 곡급할 λ§Œν•œ μž₯치λ₯Ό μ‚΄ 수 μžˆμ—ˆμŠ΅λ‹ˆλ‹€.
00:47
to power a single home.
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00:49
But today in many countries
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그런데 μ˜€λŠ˜λ‚  μ—¬λŸ¬ λ‚˜λΌμ—μ„œλŠ”
00:51
solar is the cheapest form of energy to produce,
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νƒœμ–‘ μ—λ„ˆμ§€κ°€ 생산 λΉ„μš©μ΄ 제일 μ‹Ό μ—λ„ˆμ§€μž…λ‹ˆλ‹€.
00:54
surpassing fossil fuel alternatives like coal and natural gas.
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μ„νƒ„μ΄λ‚˜ μ²œμ—° κ°€μŠ€ 같은 화석 μ—°λ£Œ λŒ€μ•ˆλ“€λ³΄λ‹€ 훨씬 μ‹Έμ£ .
00:59
Millions of homes are equipped with rooftop solar,
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수백만 μ±„μ˜ 지뢕에 νƒœμ–‘ μ „μ§€νŒμ΄ κΉ”λ € 있고
01:02
with most units paying for themselves in their first 7 to 12 years
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λŒ€λΆ€λΆ„μ€ 7λ…„μ—μ„œ 12년에 걸쳐 μ„€μΉ˜ λΉ„μš©λ§ŒνΌ μ ˆμ•½ν•΄ μ£Όκ³ 
01:06
and then generating further savings.
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κ·Έ ν›„μ—” λˆμ„ λ²„λŠ” 거와 닀름 μ—†μ£ .
01:09
So how did solar become so affordable?
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μ–΄λ–»κ²Œ 가격이 μ΄λ ‡κ²Œ λ‚΄λ €κ°”μ„κΉŒμš”?
01:14
A turning point in solar’s price history occurred
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νƒœμ–‘ μ „μ§€ 가격이 ν•˜λ½ν•œ κ³„κΈ°λŠ”
01:17
on the floor of Germany’s parliament, where in 2000,
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2000λ…„ 독일 μ—°λ°© μ˜νšŒμ—μ„œ
01:21
Herman Scheer introduced the Renewable Energy Sources Act.
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ν—€λ₯΄λ§Œ μ…°μ–΄κ°€ μž¬μƒμ—λ„ˆμ§€λ²•μ„ μ œμ •ν•œ κ²ƒμ΄μ—ˆμ£ .
01:25
This legislation laid out a vision for the country’s energy future
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이 법은 κ΅­κ°€κ°€ μ•žμœΌλ‘œ ν™œμš©ν•  μƒˆλ‘œμš΄ μ—λ„ˆμ§€λ₯Ό μ œμ‹œν–ˆμŠ΅λ‹ˆλ‹€.
01:29
in solar and wind.
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λ°”λ‘œ νƒœμ–‘ μ—λ„ˆμ§€μ™€ 풍λ ₯ μ—λ„ˆμ§€μ˜€μ£ .
01:31
It incentivized citizens to personally invest in rooftop solar panels
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이 법은 주택 μ†Œμœ μ£Όλ“€μ΄ μž¬μƒ μ—λ„ˆμ§€λ₯Ό λ§Œλ“€μ–΄μ„œ
01:36
by guaranteeing payment to homeowners for the renewable energy they generated
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쀑앙 μ „λ ₯망에 νŒ”λ©΄ μ§€μ›κΈˆμ„ μ£Όκ² λ‹€κ³  μ•½μ†ν•˜λ©°
01:40
and sold to the grid.
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지뢕에 μ „μ§€νŒμ„ μ„€μΉ˜ν•˜λ„λ‘ μž₯λ €ν–ˆμŠ΅λ‹ˆλ‹€.
01:42
The pay rate for this electricity was highly subsidized,
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μ‹œλ―Όλ“€μ—κ²Œ μ‚¬λŠ” μ „κΈ°λŠ” λ§‰λŒ€ν•œ λ³΄μ‘°κΈˆμ„ λ°›μ•˜λŠ”λ°
01:45
at times reaching four times the market price.
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일반 μ „κΈ° μš”κΈˆμ˜ λ„€ λ°°λ₯Ό μ§€κΈ‰ν•  λ•Œλ„ μžˆμ—ˆμŠ΅λ‹ˆλ‹€.
01:49
Several other countries soon followed Germany’s example,
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곧이어 λ‹€λ₯Έ ꡭ가듀도 νƒœμ–‘ μ—λ„ˆμ§€ μ‚¬μš©μ„ μœ λ„ν•˜κΈ° μœ„ν•΄
01:52
implementing similar policies and incentives
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독일과 λΉ„μŠ·ν•œ μ •μ±…κ³Ό μž₯렀책을 λ„μž…ν•˜κΈ° μ‹œμž‘ν–ˆμŠ΅λ‹ˆλ‹€.
01:55
to drive their country’s solar use.
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01:58
This created unprecedented demand for solar panels worldwide.
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그러자 μ„Έκ³„μ μœΌλ‘œ νƒœμ–‘ μ „μ§€νŒ μˆ˜μš”κ°€ μ˜ˆμƒμΉ˜ λͺ»ν•œ μˆ˜μ€€μœΌλ‘œ μΉ˜μ†Ÿμ•˜μ£ .
02:03
Manufacturers were able to scale up production
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νƒœμ–‘ μ „μ§€νŒ μ œμ‘°μ—…μžλ“€μ€ μƒμ‚°λŸ‰μ„ λŠ˜λ¦¬λ©΄μ„œ
02:05
and innovate in ways that cut costs.
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λΉ„μš©μ€ μ€„μ΄λŠ” 방법을 μ°Ύμ•„λƒˆμŠ΅λ‹ˆλ‹€.
02:07
As a result, solar panel prices dropped, while efficiency grew.
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κ²°κ΅­ νƒœμ–‘ μ „μ§€νŒ 가격은 λ–¨μ–΄μ‘Œκ³  μ—λ„ˆμ§€ νš¨μœ¨μ„±μ€ μƒμŠΉν–ˆμ£ .
02:13
Today, a 46-square-meter rooftop solar unit is often efficient enough
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μ΄μ œλŠ” 46μ œκ³±λ―Έν„°μ§œλ¦¬ νƒœμ–‘ μ „μ§€νŒμ„ 지뢕에 λ‹¬μ•„μ„œ
μ§‘ 전체에 ν•„μš”ν•œ μ „κΈ°λ₯Ό μΆ©λΆ„νžˆ 곡급할 수 μžˆμŠ΅λ‹ˆλ‹€.
02:17
to fully power a home,
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02:19
and this residential unit no longer costs millionsβ€”
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이런 μ£Όνƒμš© μž₯μΉ˜λŠ” 더 이상 수백만 λ‹¬λŸ¬κ°€ μ•„λ‹™λ‹ˆλ‹€.
02:23
in the US in 2022, the average consumer cost of a rooftop solar unit
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2022λ…„ λ―Έκ΅­μ—μ„œ μ§€λΆ• νƒœμ–‘ μ „μ§€νŒ 평균 가격은
02:28
ranged from around $17,000 to $23,000.
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만7천 λ‹¬λŸ¬μ—μ„œ 2만3천 λ‹¬λŸ¬ μ‚¬μ΄μž…λ‹ˆλ‹€.
02:33
These prices dropped by over 60% between 2010 and 2020 alone.
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2010λ…„λΆ€ν„° 2020λ…„κΉŒμ§€λ§Œ 따져도 가격이 60% 이상 λ–¨μ–΄μ‘Œμ£ .
02:40
So how much money can you save by switching to solar?
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νƒœμ–‘ μ „μ§€νŒμ„ μ‚¬μš©ν•œλ‹€λ©΄ λˆμ„ μ–Όλ§ˆλ‚˜ μ ˆμ•½ν•  수 μžˆμ„κΉŒμš”?
02:45
US solar equipped homeowners can save around $1,500 per year
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집에 νƒœμ–‘ μ „μ§€λ₯Ό μ„€μΉ˜ν•œ 미ꡭ인듀은
λ§€ν•΄ 천5λ°± λ‹¬λŸ¬ 정도λ₯Ό μ ˆμ•½ν•©λ‹ˆλ‹€.
02:51
on their energy bills,
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02:52
equating to a net savings of $10,000 to $30,000 during the unit’s lifetime.
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νƒœμ–‘ μ „μ§€λ₯Ό μ‚¬μš©ν•˜λŠ” λ™μ•ˆ 만 λ‹¬λŸ¬μ—μ„œ 3만 λ‹¬λŸ¬λ₯Ό μ•„λΌλŠ” κ±°μ£ .
02:59
Month-to-month savings tend to vary,
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맀달 μ ˆμ•½λ˜λŠ” λΉ„μš©μ€ λ‹€λ₯Ό κ²λ‹ˆλ‹€.
03:02
based on the amount of direct sunlight your panel receives,
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μ „μ§€νŒμ΄ 직사광선을 μ–Όλ§ˆλ‚˜ 많이 λ°›λŠ”μ§€μ™€
03:05
weather conditions, and the price of electricity where you live.
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μ‚¬λŠ” 곳의 μ „κΈ° μš”κΈˆμ΄ μ–Όλ§Œμ§€, 날씨가 어떀지에 따라 달라지죠.
03:09
But not everyone can get solar.
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κ·ΈλŸ¬λ‚˜ λͺ¨λ‘κ°€ νƒœμ–‘ μ „μ§€λ₯Ό μ‚¬μš©ν•  수 μžˆλŠ” 것은 μ•„λ‹™λ‹ˆλ‹€.
03:11
Adopting solar can be difficult for renters, and in many countries,
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μž„μ°¨μΈμΈ κ²½μš°μ—λŠ” μ‚¬μš©ν•˜κΈ° μ–΄λ ΅κ³ 
λ§Žμ€ ꡭ가에선 성인 쀑 25% 이상이 집을 μ†Œμœ ν•˜κ³  μžˆμ§€ μ•ŠμŠ΅λ‹ˆλ‹€.
03:15
more than 25% of adults don’t own their own homes.
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03:19
Even if you do, your roof must meet certain orientation and tilt requirements
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집이 μžˆλ”λΌλ„ μ§€λΆ•μ˜ λ°©ν–₯κ³Ό 경사가 쑰건에 λ§žμ•„μ•Ό ν•©λ‹ˆλ‹€.
03:23
to make solar a worthwhile investment.
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κ·Έλž˜μ•Ό νƒœμ–‘ μ „μ§€κ°€ μ œκ°’μ„ ν•˜μ£ .
03:27
And while units often pay for themselves through offset energy costs,
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μ „κΈ° μš”κΈˆμ„ μ ˆμ•½ν•΄μ„œ λΉ„μš©μ„ 슀슀둜 κ°λ‹Ήν•œλ‹€κ³€ ν•˜μ§€λ§Œ
03:31
the initial purchase and installation price for solar can be expensive.
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초기 κ΅¬μž… μ„€μΉ˜ λΉ„μš©μ€ 뢀담이 될 수 μžˆμŠ΅λ‹ˆλ‹€.
03:35
But several companies have adopted solar leasing models,
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그런데 μ—¬λŸ¬ νšŒμ‚¬λ“€μ΄ νƒœμ–‘ μ „μ§€νŒ μž„λŒ€ 사업을 μ‹œμž‘ν–ˆκ³ 
03:38
where they finance the material costs,
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μžμž¬λΉ„μ™€ μ„€μΉ˜λΉ„, μœ μ§€λΉ„λ₯Ό λΉŒλ €μ€λ‹ˆλ‹€.
03:40
installation, and upkeep of the rooftop systems.
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03:45
Homeowners can then buy the panel’s generated electricity
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그러면 주택 μ†Œμœ μ£Όλ“€μ€ 빌린 μ „μ§€νŒμ΄ λ§Œλ“€μ–΄ λ‚Έ μ „κΈ°λ₯Ό
03:48
at a fixed rate that’s generally lower than the local utility’s price.
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보톡 μ „κΈ° μš”κΈˆλ³΄λ‹€ μ €λ ΄ν•œ 가격에 μ“°λŠ” κ±°μ£ .
03:53
Still, many are working towards community-based solutions,
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λ˜ν•œ μ§€μ—­ μ‚¬νšŒ μˆ˜μ€€μ—μ„œλ„ 해법을 μΆ”μ§„ν•˜λŠ”λ°
03:57
which would enable entire neighborhoods to profit from solar use.
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동넀 전체가 νƒœμ–‘κ΄‘ μ—λ„ˆμ§€μ—μ„œ ν˜œνƒμ„ λ°›λŠ” κ²λ‹ˆλ‹€.
04:01
Europe is home to more than 7,000 community energy associations,
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μœ λŸ½μ—λŠ” μ§€μ—­ μ—λ„ˆμ§€ ν˜‘νšŒκ°€ 7천 개 λ„˜κ²Œ μžˆλŠ”λ°
04:06
where local members collectively invest in wind turbines and solar panels
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μ§€μ—­ 주민듀이 νž˜μ„ ν•©μ³μ„œ 풍λ ₯ ν„°λΉˆκ³Ό νƒœμ–‘ μ „μ§€νŒμ— νˆ¬μžν•˜κ³ 
04:10
to power their local grid.
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μ§€μ—­ μ „λ ₯λ§μ—μ„œ μ‚¬μš©ν•©λ‹ˆλ‹€.
04:12
In 2005, the German town of Wolfhagen created an 800 member citizens co-op,
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2005λ…„, λ…μΌμ˜ λ³Όν”„ν•˜κ² λ§ˆμ„μ—μ„ 
800λͺ…이 λͺ¨μ—¬ μ‹œλ―Ό 쑰합을 λ§Œλ“€μ—ˆμŠ΅λ‹ˆλ‹€.
04:19
which communally invested $2.84 million
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λ‹€ 같이 284만 λ‹¬λŸ¬λ₯Ό λͺ¨μ•„μ„œ
04:23
to buy up 25% of the local energy company
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μ§€μ—­ μ—λ„ˆμ§€ νšŒμ‚¬μ˜ μ§€λΆ„ 25%λ₯Ό 사듀인 λ‹€μŒ
04:26
and expand its renewables program.
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μž¬μƒ μ—λ„ˆμ§€ 사업을 ν™•μž₯ν–ˆμ£ .
04:29
Today, its turbines and panels generate enough energy
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이제 풍λ ₯ ν„°λΉˆκ³Ό νƒœμ–‘ μ „μ§€νŒμ€
04:32
to meet the town’s needs and then some.
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λ§ˆμ„μ— μ—λ„ˆμ§€λ₯Ό μΆ©λΆ„νžˆ κ³΅κΈ‰ν•˜λ©°
04:35
Surplus energy is sold to neighboring towns,
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λ‚¨λŠ” μ—λ„ˆμ§€λŠ” 이웃 λ§ˆμ„μ— νŒ”κ³ 
04:38
and profits are reinvested back into the community.
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μˆ˜μ΅μ€ μ§€μ—­ μ‚¬νšŒμ— μž¬νˆ¬μžν•˜μ£ .
04:42
For many, the appeal of solar goes beyond just savings.
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νƒœμ–‘ μ „μ§€μ˜ μž₯점으둜 λΉ„μš© μ ˆμ•½ 외에 λ‹€λ₯Έ 점을 꼽기도 ν•©λ‹ˆλ‹€.
04:47
Homes equipped with it are more climate resilient,
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νƒœμ–‘ μ „μ§€νŒμ΄ μ„€μΉ˜λœ 집은 κΈ°ν›„ 변화에 더 κ°•ν•©λ‹ˆλ‹€.
04:49
because they can be protected from utility grid outages and brownouts.
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쀑앙 μ „λ ₯망이 μ •μ „ λ˜μ–΄λ„ κ²¬λ”œ 수 있기 λ•Œλ¬Έμ΄μ£ .
04:53
Not to mention solar’s key role in decarbonizing the energy grid.
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μ „λ ₯λ§μ—μ„œ νƒ„μ†Œλ₯Ό μ ˆκ°ν•˜λŠ” 데 핡심 역할을 ν•˜λŠ” 건 λ¬Όλ‘ μ΄κ³ μš”.
04:58
By working together with larger-scale wind and solar farms,
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더 큰 규λͺ¨μ˜ 풍λ ₯ λ°œμ „μ†Œλ‚˜ νƒœμ–‘κ΄‘ λ°œμ „μ†Œμ™€ ν˜‘λ ₯ν•œλ‹€λ©΄
05:02
rooftop solar units help reduce our reliance on fossil fuels,
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μ§€λΆ• μœ„μ— μžˆλŠ” νƒœμ–‘ μ „μ§€νŒμ€ 화석 μ—°λ£Œ μ‚¬μš©μ„ μ€„μ—¬μ„œ
05:06
paving the way for a cleaner and more reliable energy future.
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더 κΉ¨λ—ν•˜κ³  더 믿을 수 μžˆλŠ” 미래 μ—λ„ˆμ§€λ‘œ κ°€λŠ” 길을 μ—΄ κ²ƒμž…λ‹ˆλ‹€.
이 μ›Ήμ‚¬μ΄νŠΈ 정보

이 μ‚¬μ΄νŠΈλŠ” μ˜μ–΄ ν•™μŠ΅μ— μœ μš©ν•œ YouTube λ™μ˜μƒμ„ μ†Œκ°œν•©λ‹ˆλ‹€. μ „ 세계 졜고의 μ„ μƒλ‹˜λ“€μ΄ κ°€λ₯΄μΉ˜λŠ” μ˜μ–΄ μˆ˜μ—…μ„ 보게 될 κ²ƒμž…λ‹ˆλ‹€. 각 λ™μ˜μƒ νŽ˜μ΄μ§€μ— ν‘œμ‹œλ˜λŠ” μ˜μ–΄ μžλ§‰μ„ 더블 ν΄λ¦­ν•˜λ©΄ κ·Έκ³³μ—μ„œ λ™μ˜μƒμ΄ μž¬μƒλ©λ‹ˆλ‹€. λΉ„λ””μ˜€ μž¬μƒμ— 맞좰 μžλ§‰μ΄ μŠ€ν¬λ‘€λ©λ‹ˆλ‹€. μ˜κ²¬μ΄λ‚˜ μš”μ²­μ΄ μžˆλŠ” 경우 이 문의 양식을 μ‚¬μš©ν•˜μ—¬ λ¬Έμ˜ν•˜μ‹­μ‹œμ˜€.

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