LED lamps, which many expect to become mainstream in the 21st century, are also plagued by price and quality issues. Replacing traditional bulbs with more efficient ones is going to be difficult in the near term unless the government steps in with subsidies or policy incentives.
而被視為 21 世紀新光源的 LED 燈，目前也有價格高、品質不穩定的問題，短期之內很難取代傳統光源，只能靠政府補助或政策鼓勵。