As this article shows, The Way Humans Get Electricity Is About to Change Forever – Bloomberg Business, there are a number of reasons to be optimistic about the way we use energy. Improvements in solar power and energy efficiency are just two reasons to be optimistic.
However, we are still emitting too much CO2 and that is going to cause the temperature of the earth to rise far too high, according to experts. In the long run, we may be ok, but in the next century there are going to be significant consequences.
Read the piece and get a sense of where things are heading.