Overview
Green Lake is a hydroelectric power plant in Sitka, Alaska, with a capacity of 18.6 MW. It is owned by the City & Borough of Sitka and provides renewable energy to the local grid.
Green Lake is a hydroelectric power plant located near Sitka, Alaska, United States. With a capacity of 18.6 MW, it is a small-scale facility that harnesses the energy of flowing water to generate electricity. The plant is owned by the City & Borough of Sitka and is currently operational, contributing to the region's renewable energy portfolio. As a hydroelectric facility, Green Lake operates without direct fuel combustion, resulting in minimal emissions of CO2, SOx, and NOx compared to fossil fuel plants. The plant's technology is typical for run-of-river or reservoir-based hydro projects common in Alaska's mountainous terrain. Regulatory oversight includes compliance with the Federal Energy Regulatory Commission (FERC) licensing requirements and state-level water rights and environmental regulations. The plant plays a key role in providing clean, reliable power to the Sitka community, reducing reliance on diesel generation. Its operation supports local energy independence and aligns with Alaska's goals for renewable energy development. The facility's small capacity makes it suitable for local distribution without significant environmental disruption.
Environmental context
Hydroelectric power generation like Green Lake has a low carbon footprint but can affect local aquatic ecosystems through altered water flows and fish passage. The plant's location in a forested, mountainous region of Alaska minimizes proximity to dense populations, reducing local air quality impacts. The facility's capacity is small, limiting its overall environmental footprint, and it operates under FERC mandates to mitigate ecological effects.
Frequently asked questions
Green Lake hydroelectric plant is located near Sitka, Alaska, United States, at coordinates 56.9863° N, -135.1227° W.
Green Lake has a capacity of 18.6 megawatts (MW), making it a small-scale hydroelectric facility.
The Green Lake hydroelectric plant is owned by the City & Borough of Sitka in Alaska.
Hydroelectric plants in the U.S. are regulated by the Federal Energy Regulatory Commission (FERC) under the Federal Power Act, which includes licensing requirements for dam safety, fish passage, and environmental mitigation. State-level water rights and environmental permits also apply.
Hydroelectric power provides clean, renewable energy, reducing reliance on fossil fuels and lowering greenhouse gas emissions. For Sitka, Green Lake helps stabilize electricity costs and supports local energy independence.