Kristin Eggen, Communications and Outreach When it comes to energy-efficiency, lighting is low-hanging fruit that offers the biggest payback. That’s why energy districts across northeast Iowa have organized quick-and-easy Bulb Swaps for your to quickly exchange up to four incandescent lightbulbs for high-efficiency LED bulbs. Winneshiek County July 31 and August 7 Winneshiek Farmers Market – 3 pm to 6 pm August 14 Decorah Community Food Pantry – 1:30 pm to