PORTLAND, Ore. -- Organic beer lovers rejoice, your Earth-friendly beer festival takes place this weekend. KGW-TV Locally crafted microbrews The North American Organic Brewers Festival returns June 26-28 at Overlook Park in North Portland. Organizers claim it’s the greenest festival on the continent -- electricity comes from renewable resources, everything is recycled and volunteers must wear hemp or organic cotton. There is sure to be lots of hoppy beers to go around, along with showcased ambers and pales from England, Scotland, Germany, Belgium and the Pacific Northwest. Last year’s event drew some 25,000 attendees and featured 75 different organic beers, festival organizers said. The festival runs noon to 9 p.m. Friday and Saturday and noon to 5 p.m. Sunday. No admission will be charged, but beer tasting will cost you $6 per cup. Those who opt in to the samplings will receive a reusable, compostable, cornstarch tasting glass. After that, expect to shell out $1 per sample. A full glass of beer will be $4 -- or more for certain strong and/or imported beers. Cash won’t be accepted, festival-goers must purchase tokens at the gate. Receive a dollar discount on your cornstarch cup by presenting a validated MAX ticket or three cans of food (preferably organic) for the Oregon Food Bank. More: Portland is America's most 'underrated' city Proceeds from this year’s festival will benefit Willamette Riverkeeper, the Leukemia and Lymphoma Society and Oregon Tilth. No parking will be provided for the event. The TriMet MAX Yellow Line will get you there, along with bus lines, bicycles, cabs or sneakers.