Clark Public Utilities has dodged a battle between wind and water power producers that’s unfolding in the Northwest this week.But with renewable energy rules going into effect next year, it’s not yet clear whether the local electric utility may ultimately be drawn into the dispute.The current problem stems from high levels of snowmelt and rain surging through dams coordinated by the Bonneville Power Administration, the government body that runs electric transmission in the region. To avoid overloading the power grid, and also to comply with federal rules protecting salmon, BPA on Wednesday morning briefly told fossil fuel and wind generators to power down.Wind power companies cried foul, saying they could lose millions of dollars in federal tax credits unless their spinning turbines keep feeding the grid. Although Clark Public Utilities has had an exclusive contract to buy electricity from a wind farm in Oregon since 2009, wind companies’ concern does not increase the cost for local customers, said Erica Erland, spokeswoman for the local utility. And Clark’s natural gas-fired River Road Generating Plant had already been offline for several months, because market prices for power are currently less than the cost of running the plant. Beginning next year, however, Clark Public Utilities will have to obtain at least 3 percent of its electricity from renewable sources — and hydropower doesn’t count. Clark’s renewables quota will increase annually until 2020, when all large utilities in Washington will have to get 15 percent of their electricity from renewables under an initiative approved by voters in 2006.