Powerhouse upgrade projects replace outdated, inefficient mechanical systems with new electronically controlled generator sets. New powerhouses contain generators of several different sizes. This allows the operator to employ the most efficient generator at various power demand levels throughout the day. At peak demand times the largest generator provides the power, while at low-demand times or times renewable sources are generating a smaller generator may provide the power. Fuel efficiency is increased by using high pressure common rail electronic fuel injection. Reliability, long life and efficiency are key drivers. AEA has installed remote monitoring systems to allow the operators to monitor their systems and allow remote technical assistance. The graphic indicates the continuous progress toward the goal. Projects flow from left side of the graph to the right as they are identified as a project in need, then progress from conceptual design through construction and are ultimately completed. The total number of projects varies due to many factors, such as changing community populations affecting eligibility for the RPSU program, and new needs arising.


There are approximately 75 RPSU projects needed. Of those, 30 are in communities served by independent utilities and 45 are in communities served by co-operatives, including Alaska Village Electric Cooperative the North Slope Borough and the Alaska Power Company.