The tickets compensate for the extra costs now associated with generating electricity from sources that are green, renewable and sustainable. Today, it costs more to make electricity at green energy plants. Large central power stations have economies of scale and lower unit production costs, so the cost of electricity from these conventional facilities is lower. These lower costs do not take into account conventional electricity generation's effects on health and the environment. Green tickets are a way to level the playing field, making green energy cost competitive with conventional electricity.
Tickets create an additional revenue stream for green energy producers.
The tickets make existing green energy plants more financially viable and create financial incentives for new green energy production. They boost demand for green energy in the marketplace. If you live outside of California, you may not have heard about green tickets before. But the tickets are well recognized as valid, certifiable and verifiable. The state of California endorses the process and recognizes the validity of green ticket trades.