100%綠能,99%是騙

華爾街日報的好文章,值得一讀:
City Pledges for ‘100% Renewable Energy’ Are 99% Misleading
The power grid is built on fossil fuels, and there’s no way to designate certain electrons as guilt free.

幾個重點:
1 德州是全美國風力與太陽能發電最多的州,但依然71%需要依靠燃煤或天然氣的火力發電。

2 政客選民、媒體說自己的城市100%靠綠能,其實是一種騙術。因為電網共通,客戶不可能單獨使用綠能電力而完全不用到火力發電。

3 事實上就是地方政客買個「renewable」標籤來彰顯自己是進步政客,風力、太陽能電力業者也樂得從地方政客處獲得財務支援,唯一倒楣的只有被騙的納稅人。

4 唯一說實話的是Denton市市長:「One of the challenges of renewable energy is that it’s so hard to predict. You don’t know exactly when the sun is going to shine or when the wind is going to blow. To maintain that reliable power, you must have backup power. (綠能最大的挑戰之一就是它太不可預測。你不知道到底太陽什麼時候夠亮或者風什麼時候吹。要維持可靠的能源網,你必須要有備用電源。)」

5 … coal is the bedrock of affordable electricity, and it will remain so, no matter how much wishful thinking by environmental activists. Coal is abundant and reliable. Unlike wind and solar, coal generation can be dialed up and down in response to market conditions and to satisfy demand. (煤炭是廉宜電力的基石,不管環保人士如何一廂情願都改變不了這個事實。因為煤炭豐沛且可靠,不像風力、太陽能,煤炭發電隨時可以根據市場狀況上線或下線以滿足需求。)

6. 離開火力發電的綠能是完全不可行的。

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