WOODBURY - LIPA is making moves to create more energy, but it will mean bigger bills for Long Island customers. The utility's board today gave the go-ahead to pursue two sites in Suffolk for a future power plant. LIPA officials are considering an existing power plant in Yaphank and the former Shoreham nuclear power plant. LIPA's plans also include purchasing more wind and solar power, as well as upgrading existing plants. This will cost taxpayers about 2.5 percent more beginning in 2018. Even though the LIPA board says it will be investing more in renewable energy, environmentalists say it's just not enough. They pleaded with the board to add more renewable energy projects even though they're more expensive. LIPA officials say they'll make a final decision on the location for the new plant in 2013 with estimated completion five years later.