GLOBAL SOLAR INSTALLS MAY BE UP 25-30% THIS YEAR V. '14 TO OVER 57GW .... US PV SOLAR MARKET EXPECTED TO EXCEED 60GW BY '22: HEXA .... DOI to outfit 4 Native American Nations with solar .... Solar City (SCTY) to start making 22% efficient solar panels this month. In Calif. Competing with Sunpower (SPWR) efficiency .