Generation and Transmission Cooperatives — The Wholesale Power Backbone of Rural America

Generation and transmission (G&T) cooperatives are wholesale electric utilities that generate electricity and transmit it at high voltage to distribution cooperatives, which then deliver it to the end-use members — farmers, rural households, and small businesses across 48 states.

G&Ts sit in the middle of a three-tier structure that is unique to the US rural electric cooperative system. They do not sell electricity directly to individual consumers. Their customers are other cooperatives — specifically the 832 distribution cooperatives that serve 42 million Americans. This wholesale-only role makes G&Ts less visible than distribution coops but no less significant: without G&T power supply agreements, most distribution cooperatives could not reliably operate.

The Rural Electric Cooperative Structure

Understanding G&Ts requires understanding the full three-tier system that the National Rural Electrification Act of 1936 created.

Tier	Entity Type	Function	Number in US
Tier 1	G&T Cooperatives	Generate and transmit bulk power at high voltage	63
Tier 2	Distribution Cooperatives	Operate local grid, deliver electricity to members	832
Tier 3	Member-consumers	Pay bills, elect distribution co-op board	42 million

The flow of power and governance:

G&Ts generate or purchase power in bulk, then transmit it at 115kV–765kV through high-voltage transmission lines
Distribution cooperatives step down the voltage at substations and deliver it through local distribution lines
Member-consumers elect the boards of their distribution cooperatives
Distribution cooperatives collectively own and govern the G&T — meaning the end-use members ultimately control the entire structure through two layers of democratic governance

Not every distribution cooperative is served by a G&T. Some purchase power directly from regional wholesale markets or from investor-owned utilities under long-term contracts. But approximately two-thirds of US distribution cooperatives source their power primarily from a G&T cooperative. See electric cooperative vs investor-owned utility for a comparison of these models.

The 63 G&T Cooperatives: An Overview

There are 63 G&T cooperatives in the United States, with combined assets exceeding $80 billion and total generating capacity of approximately 40,000 megawatts. They range from very large multi-state organizations to regional cooperatives serving a handful of distribution members.

The largest G&T cooperatives:

G&T Cooperative	States Served	Members (Distribution Coops)	Key Facts
Basin Electric Power Cooperative	9 states	141	3,000+ MW capacity; Bismarck, ND
Tri-State Generation and Transmission	CO, NE, NM, WY	42 (as of post-litigation period)	Major renewable transition controversy
Dairyland Power Cooperative	WI, MN, IA, IL	25	1,000+ MW; strong renewable growth
Minnkota Power Cooperative	ND, MN	11	Nation's largest wind power purchaser per capita
Old Dominion Electric Cooperative	VA, MD, DE	11	3,000+ MW; serves mid-Atlantic region
PowerSouth Energy Cooperative	AL, FL	20	2,400 MW; natural gas and hydro focus
Seminole Electric Cooperative	FL	8	Large coal-to-gas transition underway

National Rural Utilities Cooperative Finance Corporation (CFC) and CoBank provide financing to most G&T cooperatives. The National Rural Electric Cooperative Association (NRECA) provides policy advocacy, safety programs, and technical support.

What G&T Cooperatives Actually Do

Generation

G&Ts own, operate, or contract for power generation across a range of technologies. Historically, most G&T generation portfolios were dominated by coal-fired power plants, which provided reliable baseload power at low fuel costs during the mid-twentieth century.

As of 2024, the energy mix across G&T cooperatives includes:

Natural gas — now the dominant fuel source for most G&Ts, used for both baseload and peaking capacity
Coal — declining sharply; several large G&Ts are in active plant retirement programs
Wind — the fastest-growing source; Plains states G&Ts in particular have significant wind capacity
Solar — growing rapidly, particularly in southern states
Hydropower — significant for some regional G&Ts in the Pacific Northwest and mid-South
Nuclear — present in some portfolios (e.g., Old Dominion Electric has a stake in nuclear generation)

Basin Electric Power Cooperative, headquartered in Bismarck, North Dakota, operates one of the most complex portfolios: coal-fired plants in Wyoming and North Dakota, the Dakota Gasification Company (which converts coal to synthetic natural gas), significant wind capacity, and a carbon capture installation at its Antelope Valley Station.

Transmission

G&Ts own and operate high-voltage transmission infrastructure — the large towers and cables you see crossing open countryside. This infrastructure connects generation plants to the distribution system.

Transmission operations include:

Maintaining reliability of high-voltage lines (typically 69kV to 765kV)
Managing interconnections with regional transmission organizations (RTOs) like MISO, SPP, and WECC
Coordinating outage management and emergency response
Planning long-term transmission expansion to accommodate new generation

Power Supply Agreements

The defining commercial relationship in the G&T system is the wholesale power supply agreement between a G&T and its member distribution cooperatives. These are long-term contracts — often 20–40 years — that obligate the distribution cooperative to purchase all or nearly all of its power from the G&T.

These all-requirements contracts were designed to give G&Ts the revenue certainty needed to finance large generating assets. A G&T cannot build a $2 billion coal plant unless it knows it will sell the power for decades. The flip side is that distribution cooperatives become locked into the G&T's energy mix and cost structure for the contract term.

This became a major source of conflict as renewable energy costs fell dramatically in the 2010s. Distribution cooperatives that wanted to add local solar or wind found themselves contractually prohibited from purchasing power from other sources.

The Tri-State Controversy and the Exit Right Issue

Tri-State Generation and Transmission Association became the center of a national debate about G&T contract flexibility when several of its member distribution cooperatives sought to exit their all-requirements contracts.

Tri-State serves 42 distribution cooperatives across Colorado, Nebraska, New Mexico, and Wyoming. By the mid-2010s, several of those members — particularly Kit Carson Electric Cooperative in New Mexico and Delta-Montrose Electric Association in Colorado — argued that Tri-State's energy mix (heavily coal at the time) and high power rates were not serving their members' interests, especially compared to rapidly cheapening wind and solar alternatives available locally.

Kit Carson Electric Cooperative paid $37 million to exit Tri-State's contract in 2016, then contracted with Guzman Energy for a cleaner, lower-cost power supply. This move drew national attention to the tension between G&T contract obligations and distribution cooperative autonomy.

Delta-Montrose Electric Association (DMEA) pursued a similar path, resulting in prolonged legal battles with Tri-State over exit fees. DMEA was ultimately expelled from Tri-State's membership in 2019 after filing federal complaints with FERC (the Federal Energy Regulatory Commission) challenging the reasonableness of exit terms.

The FERC intervention: FERC ruled in 2020 that Tri-State, as a wholesale power supplier, was subject to FERC jurisdiction and that its all-requirements contracts were subject to review. This was a significant ruling — previously, most G&T contracts were considered outside FERC jurisdiction. The ruling gave distribution cooperatives a new avenue to challenge contract terms.

Tri-State subsequently underwent a major strategic restructuring: accelerating coal plant retirements, adding renewable capacity, and revising its contract terms to give members more flexibility. As of 2023–2024, Tri-State's portfolio is transitioning significantly toward renewables.

Why this matters beyond Tri-State: The Tri-State litigation established a precedent that G&T all-requirements contracts are not permanent. Distribution cooperatives across the country are now more actively evaluating their options. G&Ts are under pressure to offer competitive rates and renewable options rather than relying solely on long-term contractual lock-in.

The Renewable Energy Transition

G&T cooperatives face a transition that is both technical and financial. The challenge is not simply replacing old generating assets — it is managing the financial obligations attached to those assets while investing in new ones.

The coal transition problem: Most G&T coal plants were financed with long-term bonds secured by power supply revenues. Retiring a coal plant early does not eliminate the debt. The G&T still owes bondholders for the full original term unless it refinances or otherwise restructures. Early coal retirement therefore creates stranded costs that must be recovered from distribution cooperative rates.

Cooperatives that want to retire coal quickly face pushback from members who would see rate increases to pay for assets that are no longer generating power. This creates a political challenge alongside the technical and financial one — cooperative democracy means that rate increases require member acceptance.

Progress as of 2024:

Several G&T cooperatives have committed to 100% clean energy targets by 2030–2050
Dairyland Power Cooperative committed to net-zero carbon by 2050 and closed its coal plant in 2022
Minnkota Power Cooperative is developing the Project Tundra carbon capture installation on its Milton R. Young coal station in North Dakota
Basin Electric has set renewable energy targets while managing its existing coal fleet obligations

Renewable additions: Wind energy has been the dominant renewable addition for plains-state G&Ts, where capacity factors are high and land is available. Solar is growing rapidly in southern-state G&Ts. Some G&Ts are evaluating battery storage, small modular reactors, and demand-side management programs.

G&T Cooperatives and NRECA

The National Rural Electric Cooperative Association (NRECA) is the trade association representing all US electric cooperatives — both G&Ts and distribution cooperatives. NRECA provides policy advocacy in Washington, safety and compliance training, technology programs, and financial services through its subsidiary National Rural Utilities Cooperative Finance Corporation (CFC).

NRECA's published data tracks the overall performance and composition of the cooperative electric sector. Key statistics:

832 distribution cooperatives
63 G&T cooperatives
42 million consumer-members
$155 billion in total assets across the sector
92,000 employees

Touchstone Energy is NRECA's consumer brand, used by many distribution cooperatives as a quality and reliability mark. G&T cooperatives do not typically use the Touchstone brand directly — it is a distribution-level identity.

How G&T Cooperatives Are Financed

G&T cooperatives are capital-intensive businesses. Building or acquiring generating assets, constructing transmission infrastructure, and maintaining large-scale operations requires billions of dollars in long-term debt. For an overview of how cooperatives access capital and financing, see cooperative capital and loans for cooperatives.

Primary financing sources:

Rural Utilities Service (RUS) — a USDA agency that makes direct loans to electric cooperatives at below-market rates. RUS has historically financed much of the US rural electric infrastructure.
National Rural Utilities Cooperative Finance Corporation (CFC) — a cooperative financial institution owned by its member cooperatives; provides loans, lines of credit, and bond financing
CoBank — Farm Credit System bank that lends to rural cooperatives including G&Ts
Public bond markets — larger G&Ts issue bonds rated by Moody's or S&P; investment-grade ratings reduce borrowing costs

The all-requirements contracts with distribution cooperatives serve as the revenue pledge that secures G&T debt. Lenders can count on the contractual payment stream from member distribution cooperatives when evaluating creditworthiness.

G&T Cooperatives Outside the United States

The G&T model is specific to the US rural electric cooperative structure. In most other countries, electricity generation and transmission are organized through national utilities, investor-owned companies, or regional market operators — not cooperative structures.

Some countries have cooperative electric utilities, but few replicate the three-tier structure of the US model:

Canada: BC Hydro and Manitoba Hydro are crown corporations, not cooperatives. Some rural electric cooperatives exist (particularly in Alberta), but Canada lacks a G&T cooperative tier.
Kenya: The Kenya Rural Electrification Authority manages rural grid expansion; some SACCOs provide energy financing, but not the G&T structure.
Denmark: Wind energy cooperatives allow communities to co-own wind turbines, but generation and transmission are managed by national operator Energinet.

The US G&T model emerged from the specific conditions of the 1930s rural electrification program. It is the product of that history and does not have a direct global equivalent. The full story of rural electrification is covered in history of cooperatives and cooperatives in the United States.

Frequently Asked Questions

What is the difference between a G&T cooperative and a distribution cooperative? A G&T cooperative generates electricity and transmits it at high voltage in bulk to other cooperatives. A distribution cooperative receives that power, steps it down at substations, and delivers it through local power lines to individual homes and businesses. G&Ts sell to cooperatives; distribution cooperatives sell to end-use members. Both are cooperatives, and distribution cooperatives collectively own their G&T.

Who owns a G&T cooperative? The member distribution cooperatives collectively own and govern the G&T. Distribution cooperatives elect the G&T's board of directors, typically with voting weight proportional to their power purchases or member counts. Since distribution cooperatives are themselves owned by their consumer-members, end-use members ultimately control the whole structure through two layers of cooperative democracy.

How many G&T cooperatives are there in the United States? There are 63 G&T cooperatives in the US as of 2024. This number has been declining slowly through mergers over the decades, but the basic structure has been stable for many years.

Why did Tri-State become controversial? Tri-State's all-requirements contracts prevented member distribution cooperatives from purchasing cheaper renewable power from other sources. When members sought to exit, Tri-State charged exit fees that some distribution cooperatives challenged as unreasonable. FERC's 2020 ruling that Tri-State was subject to federal jurisdiction opened a new legal avenue for distribution cooperatives to contest wholesale contract terms. Tri-State has since restructured its contracts and accelerated its renewable transition.

Are G&T cooperatives transitioning to renewable energy? Yes, but at varying speeds. G&Ts with large coal plant debt obligations face financial constraints that slow early retirement. G&Ts with newer gas plants or lower legacy debt can transition faster. Dairyland Power Cooperative closed its Genoa coal plant in 2022. Basin Electric is planning coal plant retirements while managing existing debt. The renewable transition for G&Ts is a 10–20 year process, not an immediate shift.

What is the Rural Utilities Service (RUS) and how does it relate to G&Ts? RUS is a USDA agency that provides direct loans to rural electric, water, and telecommunications cooperatives. It financed much of the US rural electric infrastructure — generation plants, transmission lines, and distribution systems — at below-market interest rates. Most G&T cooperatives have some RUS debt and operate under RUS loan covenants that restrict certain financial decisions.

Can a distribution cooperative leave its G&T? Yes, but it is difficult and expensive. The all-requirements contract typically includes an exit payment provision — effectively the distribution cooperative's proportional share of the G&T's outstanding debt and obligations. This has ranged from tens of millions of dollars (Kit Carson's $37M) to amounts that make exit practically impossible for smaller cooperatives. FERC's jurisdiction over wholesale power contracts has given distribution cooperatives a new avenue to negotiate exit terms.

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