RPS programs and targets have been one of the key drivers of the expansion of solar and wind power and are expected to continue to contribute to solar and wind power installations in many areas of the United States. In addition to the 29 states with RPS programs, eight other states have non-binding goals supporting renewable energy.
The international markets in which we operate or may operate in the future also typically have in place regimes to promote renewable energy. These mechanisms vary from country to country. Our objective is to grow our dividend through the growth of our portfolio in North America and Western Europe, including through our recently announced tender offer to acquire Saeta Yield, S.A., a Spanish corporation, that is expected to close in the second quarter of 2018 (as described below under Irrevocable Agreement to Launch Tender Offer for the Common Shares of Saeta Yield). In seeking to achieve this growth, we may rely on governmental incentives in these jurisdictions. For example, a meaningful portion of our existing portfolio is located in the Canadian province of Ontario. With installed capacity of approximately 4,800 MW of wind and 2,300 MW of solar, Ontario, one of our provincial markets, leads Canada in installed wind and solar power capacity. While the current Long Term Energy Plan for Ontario, released in October 2017, no longer specifies targets for renewable energy, it continues to focus on measures supporting innovation and grid modernization, including in respect of renewable distributed generation.
Financial Information about Segments
We have two reportable segments: Solar and Wind. These segments comprise our entire portfolio of renewable energy assets and are determined based on the management approach. This approach designates the internal reporting used by management for making decisions and assessing performance as the source of the reportable segments. Our operating segments consist of Distributed Generation, North America Utility and International Utility that are aggregated into the Solar reportable segment and Northeast Wind, Central Wind and Hawaii Wind that are aggregated into the Wind reportable segment. The operating segments have been aggregated as they have similar economic characteristics and meet all of the aggregation criteria. Corporate expenses include general and administrative expenses, acquisition costs, interest expense on corporate-level indebtedness, stock-based compensation, depreciation, accretion and amortization expense and loss on extinguishment of corporate-level indebtedness. All net operating revenues for the years ended December 31, 2017, 2016 and 2015 were earned by our reportable segments from external customers in the United States (including Puerto Rico), Canada, the United Kingdom and Chile.
For the year ended December 31, 2017, significant customers representing greater than 10% of total operating revenue were Tennessee Valley Authority and San Diego Gas & Electric, which accounted for 13.1% and 10.5%, respectively, of our consolidated operating revenues, net.
Prior to 2017, the Company did not have any of its own employees as the personnel that managed our operations were employees of SunEdison and their services were provided to the Company under the management services agreement or project-level asset management and O&M services agreements with SunEdison. Following the SunEdison Bankruptcy, as part of our efforts to create a stand-alone corporate organization, we established a retention program for key employees. As of January 1, 2017, the key employees that provided most of our corporate-level services were hired directly by the Company to ensure continuity of corporate operations, and throughout the first half of 2017, we hired additional employees from SunEdison who provided services to us, a majority of which focused on project-level operations. However, we continue to depend on a substantial number of outside contractors. As of December 31, 2017, we had 119 employees, the majority of which were located in the United States.
In connection with the expected relocation of our headquarters to New York, New York, we expect to experience departures of a significant number of these employees. 66 of the Company's employees as of December 31, 2017 are employed under short-term transition agreements, which range from three to nine months of service subsequent to the Merger closing date on October 16, 2017. In addition, we have experienced changes to our executive officers and senior management, including the departure of our interim Chief Executive Officer, Chief Financial Officer and General Counsel upon the closing of the Sponsorship Transaction. The governance agreements entered into between the Company and Brookfield in connection with the Merger and Sponsorship Transaction provide for Brookfield to appoint our Chief Executive Officer, Chief Financial Officer and General Counsel. These three executive officers are not employees of the Company and their services are provided pursuant to the Brookfield MSA.