Oregon has became the fourth northwest state to adopt net metering to encourage installation of small scale renewable projects. Under a regulation passed last month, owners of small scale (under 25 kW) wind, solar, hydroelectric or fuel cell systems can generate their own power and sell the excess to the utility. Peter West of lobby group Renewable Northwest Project says: "This breaks down artificial market barriers and is a necessary first step to move Oregon into a renewable future." Oregon joins a net metering trend. Montana passed a net metering law earlier this year and Washington passed the law last year. Idaho adopted a similar order through its commission that governs utilities.