LYNN ? Wind power, sea level change and fuel-efficient automobiles are all topics for discussion Wednesday at North Shore Community College’s Sustainability Fair: Today for Tomorrow.The event at the Lynn campus, from 9 a.m. to 1 p.m., features speaker presentations every half hour, beginning at 9:15 a.m. The speakers include Mark Richey of Essex, owner of Mark Richey Woodworking and a controversial wind turbine at his Newburyport millwright factory; Fred Hopps, a solar power consultant and former Beverly High School teacher, who will discuss a clean energy future; Melissa Dimond from The Food Project, an organization with urban farms in Lynn and Beverly, will talk about sustainable agriculture; and author Bill Sargent, will address the sea level changes going on in Chatham and Newburyport’s Plum Island.A member of the Saugus River Watershed Council will give a presentation on preserving water resources, while Hal Meyer of Ameresco, a Framingham-based energy solutions company, talks about the community college’s efforts to go green.Lynnfield automobile dealer Herb Chambers will provide a Smart Car so that fair visitors can take a close look at the innovative vehicle. The fair will also include about 30 information tables from organizations such as National Grid, which is promoting energy efficiency. Other organizations represented at the fair include the the Essex County Greenbelt Association, and the Chelsea Creek Action Group.”Green technology is one of the staples of the Massachusetts economy,” Lt. Gov. Tim Murray said during a recent interview.All across the state, green technology proposals and projects are emerging, from land- and sea-based wind turbine farms to businesses focused on reuse and recycling of goods previously handled as trash.In Richey’s case, the Newburyport City Council has approved a wind energy ordinance, which positions him to become the city’s first wind turbine user. His business was awarded a $474,340 grant in 2007 from the Massachusetts Technological Collaborative to install the turbine, which is expected to supply 90 percent of his company’s electrical needs.As Richey pointed out, wind turbines do not produce carbon emissions or other greenhouse gasses.Gov. Deval Patrick said the state must boost its wind turbine output from the present 7 megawatts of power to 2,000 megawatts by 2020. Federal stimulus dollars were expected to help make that goal a reality.Ongoing projects statewide include the installation of geothermal heating systems and rooftop solar panels on schools and other public buildings.