These cash-generators can boost your passive income. Seeing steadily growing streams of cash deposited into an investment account year after year can make any investor smile. Read on to learn more about two top-tier stocks that can help you earn more dividend income from your portfolio. Brookfield Renewable The trend toward sustainable power sources is set to provide lucrative opportunities for income-focused investors. Brookfield Renewable (BEPC -3.35%) (BEP -4.24%) is particularly well suited to deliver g ...