The expression in boldtype expresses an addition in
Besides surfing, tourism and the ocean views, California may get another benefit from its famed coast: energy. (lines 1-3)
If it is built, devices would convert the waves energy into electricity, (lines 17-19)
California will have to wait a few years, however, to see if wave energy will help the state meet its goal for a third of its energy needs (lines 23-25)
Currently there are few projects around the world that generate electricity from the ocean. (lines 36-37)
PG&E estimates that together they produce about 300 megawatts of power, less than a single mid-sized coal plant. (lines 37-39)
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