 A study by the Fraunhofer Institute ISI found that this "merit order effect" had allowed solar power to reduce the price of electricity on the German energy exchange by 10% on average, and by as much as 40% in the early afternoon.In 2007; as more solar electricity is fed into the grid, peak prices may come down even further.By 2006, the "merit order effect" meant that the savings in electricity costs to German consumers more than offset for the support payments paid for renewable electricity generation.