Your power comes from a wide variety of generating facilities located primarily in Nebraska. NPPD uses a diverse mix of generation resources including coal, natural gas, wind, water, and nuclear power.
The power system is an interconnected grid that distributes power as needed from a wide variety of sources. From the power plant, electric energy is delivered through a series of lines and substations where the voltage is reduced to the proper level for end-use customers.
NPPD is a member of the Southwest Power Pool (SPP), a regional transmission organization. The SPP conducted a three-year study, also known as the Integrated Transmission Plan, to assess the needs of the entire transmission network within the SPP region over the next 10 years. The study identified the need for two, 345 kilovolt (kV) transmission lines in Nebraska, with one segment to run from NPPD's Hoskins substation located southwest of Hoskins to a new substation in the Neligh area. The other line segment will run from NPPD's Gerald Gentleman Station north to the Cherry County area and then east to Western Area Power Administration's line at the Holt/Antelope County line.
Public hearings on the proposed line routes and substation site are set for August 5 and 6.
Following an additional 30-day public comment period, we will review any further comments received and announce the final route and substation site in September.
NPPD holds a variety of meetings to engage various stakeholders (property owners/tenants, elected officials, wholesale customers, agencies and interest groups, community/area and business leaders, and media) in the transmission siting process.
The public involvement process includes:
-- Public Outreach Meetings
-- Public Open Houses (Study Area, Corridors, Alternatives)
-- Online Public Meeting
-- A Formal Public Hearing
At each phase of the Project, public input is used to help determine the opportunities and constraints throughout the routing process. Currently we are in phase four of the routing process and NPPD is sharing proposed transmission line routes and a substation site with the public.
Throughout the routing process, NPPD coordinates with federal, state, and local agencies to help determine what environmental resources might be impacted by the Project. These resources include, but are not limited to: agricultural lands, sensitive, threatened and endangered species, cultural and historical resources, and water resources.
To date, the first three steps of the routing process have been completed. NPPD is now in the fourth step of the routing process. Proposed final line routes for the 345,000-volt line, and the four, 115,000-volt lines of this project, as well as a proposed final substation location near Neligh have been identified. Information that is considered in determining the proposed final options was gathered using available electronic data, communication with agencies and local officials, performing field visits, but most of all through public comments received from landowners at Open Houses and other means.
Information obtained from landowners, agencies, and other stakeholders is considered to determine the most suitable line route. This information helps determine criteria that are considered in determining and eventually comparing possible line routes through the area.
A variety of criteria are used to select a location for a substation:
The substation site requires a minimum of 40 acres to accommodate the substation and outlying transmission line structures. This site should be relatively flat, and needs to be accessible from a good road. The location must also provide adequate opportunities to route lines to and from the substation site. The current land use, the proximity to homes, along with impacts to environmentally sensitive areas, are also items considered when selecting a substation site.
In determining the value of land for easement compensation, NPPD conducts land market valuations which includes:
- Independent appraisers conducting real estate market study and analysis
- Market study focusing on the area of the proposed line route
- Market study and analysis based on comparable sales and the highest and best use of property
- Viewing and determining the value of each parcel
After land valuations are completed, and prior to actual negotiations, NPPD will establish easement payment amounts for each parcel based on:
- Land valuation
- Limited rights obtained by the District
- Impact of structures on farming or land operations
- Any other special considerations
Based on past NPPD projects, a payment in the range of 80% of market value of the land area within the boundaries of the right-of-way area is customary.
Important things to remember about the easement: the landowner still maintains ownership of the easement area, the easement allows NPPD ingress and egress to construct and maintain the transmission line. The typical easement width for a 345kV line is 200’ and the typical easement width for a 115kV line is 60’. A landowner must seek written permission from NPPD if he or she is interested in altering the grade in the easement area in any way such as constructing any buildings or structures or planting trees. Written permission is required to ensure the safety of the general public when conducting activities near the transmission line.
The new 115kV lines for this project will utilize primarily single pole structures, the rebuilt line sections will remain two pole wood H-frame structures.
The 345kV line will utilize single steel pole structures. Shown here are a typical in-line or “tangent” structure as well as a typical “deadend” structure. The deadend structure is used when turning a large angle. The average in-line structure will be about 150 ft. in height and will have a concrete foundation that is approximately 7 ft. in diameter. The average dead-end structure will be about 130 ft. in height and will have a concrete foundation that is approximately 11 ft. in diameter. No guys are expected to be used on these structures.
In agricultural land, the line will generally be located along either section or half section lines. The 345kV structures are designed to span an average of ¼ mile, this allows the structures to be placed in the corners of center pivot irrigation systems and not interfere with their operation. The 115kV structures will also be placed to minimize any impacts to farming operations.
After the survey of the right of way is completed, the first construction step would be to install gates and culverts to make it easier for the construction crews to access the right of way.
The next task would include clearing the right of way of trees and other structures that might interfere with the safe operation of the line.
After the tree clearing is complete, crews would next auger the holes and pour the concrete foundations.
After sufficient time for the concrete to cure, the crews would haul the pole sections to the site and assemble them, following the assembly; a large crane would be used to set the structure on the foundation.
After a significant number of the structures have been set, the crews will begin the wire stringing operation. This operation requires several steps to complete the installation on of the wire. Because the wire comes in reels with approximately 2 miles per reel, the crews will need to have a wire stringing set-up approximately every two miles.
The final step would be to clean-up and restore the right-of way to as close as possible to its original state.
Stay Involved, Here's How!
NPPD wants to hear from you and answer your questions.
Your input is important to us.
You can continue to stay informed and involved by:
-- Visiting the website
-- Sending an email
-- Calling 1-888-677-3412
-- Following project news in NPPD newsletters, newspaper and radio