Thank you, Michelle. Good morning, and thank you all for joining our year end 2017 earnings call. On the call with me today are, John Hatsopoulos and Ben Locke, our co-CEOs; Robert Panora, our President and Chief Operating Officer; and Jeb Armstrong, our Director of Capital Markets. Before we begin, I'd like to read our Safe Harbor statement. This conference call and any accompanying documents containing forward-looking statements, which may describe strategy, goals, outlooks or other non-historical matters or projected revenues, income, return or other financial measures that may include words such as believe, expect, anticipate, intent, plan, estimate, project, target, potential, will, should, could likely or may and similar expressions intended to identify forward-looking statements. These statements are only predictions and involve known and unknown risk, uncertainties and other factors that may cause our actual results to differ materially from those expressed or implied by such forward-looking statements. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Forward-looking statements speak only as of the date on which they are made and we undertake no obligation to update or revise any forward-looking statements. In addition to those factors described in our annual report on Form 10-K and our quarterly reports on Form 10-Q under risk factors among the factors that could cause actual results to differ materially from past and projected future results, are the following; fluctuations in demand for our products and services; competing technological developments; issues relating to research and development; the availability of incentives, rebate and tax benefits relating to our products and services; changes in the regulatory environment relating to our products and services; integration of acquired business operations and the ability to obtain financing on favorable terms to fund existing operations and anticipated growth. In addition to GAAP financial measures, this presentation includes certain non-GAAP financial measures, including adjusted EBITDA, which exclude certain expenses as described in the presentation. We use adjusted EBIT as a internal measure of business operating performance and believe that the presentation of non-GAAP financial measures provide a meaningful perspective of the underlying operating performance of our current business and enables investors to better understand and evaluate our historical and perspective operating performance by eliminating items that vary from period-to-period without correlation to our core operating performance and highlight trends in our business that may not otherwise be apparent when relying solely on GAAP financial measures. I'll now turn the call over to John Hatsopoulos for some opening remarks.