Susitna Energy Systems

Goodnews Bay


 

 

Alaska micro-grid powers water plant 

Turbines offset the high cost of diesel-generated electricity for water treatment at a remote Alaska village.

We are very optimistic that this will be a very successful and interesting project for the state. 
-John Warren, P.E., Engineering Services Director, DEHE, ANTHC

Customer

The Alaska Division of Environmental Health & Engineering (DEHE), Alaska Native Tribal Health Consortium (ANTHC) provides planning, design, construction and operations support for clean water and sanitation projects.

Objectives

Offset diesel use by the village’s water treatment facility, which requires about 18,000 kWh of electricity per year
Serviceable by village residents

Project Requirements

  • Reduce the cost and dependence of diesel fuel
  • Provide redundant power supply for crucial infrastructure
  • Feed excess electricity to village’s micro-grid

Site Details

  • Average annual wind speed: 7.5 m/s (16.7 mph)*
  • Average solar insolation: 3.0 kWh/m2/day*
  • Location: 59.121408, -161.585836
  • Install date: July 2012

Solution

  • Three Skystream 3.7 turbines, 21 m (70 ft) guyed towers
  • Turbines provide clean, ready-to-use AC power (no external inverter or controller required)
  • “Behind the meter” connection reduces facility’s utility energy costs; excess generation feeds village micro-grid
  • Chosen based on a proven performance throughout rural Alaska

Benefits

  • Projected annual energy: 13,500 kWh (75% of water plant’s electrical needs)
  • Reduced diesel consumption
  • Delivers potable water to village residents

Partners

  • Susitna Energy Systems
  • All Alaska Electric
  • Alaska Village Electric Cooperative (AVEC)
  • Alaska Rural Utility Collaborative (ARUC)

*Source: U.S. Dept. of Energy’s National Renewable Energy Laboratory (NREL)

 

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