New problems emerging on the grid as more sources of wind and solar power come online across the globe, the IEA finds in a 40-page market report. UPI/Stephen Shaver SAN FRANCISCO, June 2 (UPI) — A report from the International Energy Agency finds that new problems are emerging as the sector for wind and solar power matures technologically. An April report from the IEA on electricity trends across the Organization of Economic Cooperation and Development and found an increase of 77 terawatt-hours of power generated from wind resources from 2014, the largest increase recorded by the Paris-based agency. The majority of the new wind-generated electricity occurred in European members of the OECD. A new report issued from the sidelines of a clean-energy conference in California finds similar trends emerging for solar power. Combined, the report said, wind and solar power are the fastest growing sources of new electricity worldwide […]