v3.4.0.3

Segment and geographic information - Risk (Details) - Revenues, net - Consolidated revenue	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Independent Electricity System Operator
Consolidated revenue concentration
Percentage of consolidated revenue	38.10%	33.70%
San Diego Gas & Electric
Consolidated revenue concentration
Percentage of consolidated revenue		14.40%
BC Hydro
Consolidated revenue concentration
Percentage of consolidated revenue	14.20%	11.70%
Niagara Mohawk
Consolidated revenue concentration
Percentage of consolidated revenue	9.90%

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+ References

No definition available.

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+ References

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