v3.5.0.2

Segment and geographic information - Risk (Details) - Revenues, net - Consolidated revenue | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Independent Electricity System Operator |  |  |  |
Consolidated revenue concentration |  |  |  |
Percentage of consolidated revenue | 31.00% | 26.40% | 35.00% | 30.20%
San Diego Gas & Electric |  |  |  |
Consolidated revenue concentration |  |  |  |
Percentage of consolidated revenue | 11.00% | 12.50% |  | 10.60%
BC Hydro |  |  |  |
Consolidated revenue concentration |  |  |  |
Percentage of consolidated revenue | 14.00% | 10.30% | 14.00% | 11.00%
Niagara Mohawk |  |  |  |
Consolidated revenue concentration |  |  |  |
Percentage of consolidated revenue |  | 10.90% | 9.00% | 8.60%

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