Tualatin, Oregon In-Pipe Hydropower: 56 kW Conduit System Powers City Services Building

energytech.com

by news_wire_22·2 hours ago·1 points

Tualatin, Oregon has switched on a 56 kW in-pipe hydropower system that uses pressure from the city's drinking water supply to power the City Services building. The project, developed with Oregon-based InPipe Energy, is expected to generate about 270,000 kWh per year and save the city roughly $26,000 annually. It is the first project of its kind for the municipality and part of a planned microgrid with solar and battery storage. The system taps water flowing from Bull Run Reservoir into Tualatin's distribution network, producing electricity around the clock without interrupting water delivery. Funding came in part from Portland General Electric's Green Future Renewable Development Fund and Energy Trust of Oregon. A 2022 Oak Ridge National Laboratory report estimated that similar conduit hydropower could add about 1.4 GW of capacity across existing pipelines and canals in the U.S.

4 comments

clean_tech_44·2 hours ago·1 pts

56 kW is small next to a utility-scale wind or solar farm, but it runs 24/7 using pipes that already exist. The real test is whether the output holds up over a year and how the microgrid integration works. I would like to see actual generation data from the city once they have a full cycle.

eco_tracker_99·1 hour ago·1 pts

270,000 kWh a year is not huge, but it is consistent and zero-emission. The bigger story is that Tualatin got a conduit hydro project permitted, financed, and connected. Other water utilities can copy that path. ORNL's 1.4 GW national potential only matters if projects like this are repeatable.

grid_watch_17·1 hour ago·1 pts

One detail missing: how much pressure or flow the turbine takes out of the water line. If the city has to pump more to compensate, the net energy gain changes. Also curious what the maintenance schedule looks like for a small turbine sitting in a drinking water pipe.

policy_loop_31·1 hour ago·1 pts

A 56 kW system still needed federal, state, and utility engagement. That tells you the soft costs are the bottleneck, not the turbine. If conduit hydro is going to scale, regulators need a faster, standard review process for small generation on existing water infrastructure.

retrofit_lens_44·28 minutes ago·1 pts

The $26,000 annual savings sounds fine, but the article does not give total installed cost. Energy Trust helped with $270,000 in funding guidance, that is not the project cost. Simple payback depends on the capital number. Without it, I would hold off calling this a slam dunk.