Questor share tip: Aggreko's woes are temporary This is not a concern for Questor. In 2012, the group is expecting to spend £415m, but a significant amount of this spending was on equipment used in London 2012. This needs to be absorbed into the wider business. When this is stripped out, it is likely that there will be a fall of about £40m in spending. On an asset base of about $2bn this is a drop in the ocean. Rupert Soames, Aggreko's chief executive, is right to be cautious about economic prospects for next year. Despite lower capital investment, he still expects to be able to meet demand because the group's fleet of equipment is mobile. There is a global shortage of power all over the world and Aggreko is ideally positioned to take advantage over the next few years. For example, in July, India suffered the world's largest grid failure, with half the country plunged into darkness. Africa offers a solid opportunity, as does Asia and Aggreko remains the world's number one operator in its field. Questor has had a hold rating on the shares since December last year when they hit £18.48. Because of the level of growth and size of the opportunity, the shares have been highly rated. Even after recent falls, the 2012 earnings multiple is 20, falling to 18.3 this year. With the shares hitting a high of £24 in September, the rating has been even higher. At such a valuation, the market prices in perfection. Any temporary stumble, which is how the market interpreted Friday's statement, is always punished harshly. However, the shares are still worth holding for future growth.