<prompt> Translate the following text to EnglishTuna wasiwasi kwamba muda mfupi wa S. 556 kwa ajili ya ufungaji wa udhibiti unaweza kusababisha mitambo ya umeme kuondolewa kwa wakati muhimu, ambayo inaweza kusababisha upungufu wa umeme.  <response>: We are concerned that S. 556s short timeframes for installation of controls could lead power plants to be taken off-line at important times, which could lead to electricity shortages. 