TVA-636

TVA-636BetaActiveGasTVALBNL

276 MW generation in Humphreys, TN · In queue since July 2024 · Proposed COD January 2028

BA: TVANERC: SERCRC: TVA

276 MW

Capacity

Components

Gas

2 years

In Queue

Cluster Study

IA Phase

COD target: 2028

Interconnection

Total Duration

3y 6m

Study Phase

TC25-034

Impact Study25%

Queue EntryJul 5, 2024

Interconnection request submitted to ISO/RTO

Interconnection StudyCurrent

Project undergoes interconnection studies to assess grid impact.

Typical: 18–36 months

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2028-01-01

About

TVA-636 is a proposed 276 MW gas-fired generation project located in Humphreys County, Tennessee. The project is being developed by the Tennessee Valley Authority (TVA) and interconnected to the Johnsonville Fossil Plant Station. It entered the TVA interconnection queue on July 5, 2024, with a proposed commercial operation date of January 1, 2028. The project's interconnection status is currently in the Cluster Study phase.

This proposed project is linked to the existing Johnsonville Fossil Plant and has appeared in recent news coverage regarding TVA's generation planning.

Generated from interconnection queue and public data sources

Development Risk

Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.

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See the full development-risk decomposition for this project.

P(COD by stated date)

Withdrawal probability vs cohort

IA cluster risk

Project Details

State

County

Humphreys

Grid Region

Southeast

Market

—

Developer

—

Utility

Tennessee Valley Authority

Entity

TVA

Service Type

—

Point of Interconnection

Johnsonville Fossil Plant Station

Data Source

LBNL

Risk Analytics

Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.

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See the full risk decomposition + scenarios for this project.

Climate hazards (8+)

Generation variability (P10/P50/P90)

Offtake + transmission counterparty

Generation Forecast

Forward generation outlook — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. Powered by InfraSure's generation modeling stack.

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See the full forecast + scenario decomposition for this project.

P50 conditioned on COD

Capacity factor vs cohort

Weather + policy scenarios

Financial Forecast

Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.

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See the full revenue + DSCR projection for this project.

Revenue conditioned on COD

Financing close risk

Cohort DSCR comparison

Market Context

Approximate

ISO / RTO: SOUTHEAST
Trading Hub: TVA
Hub Confidence: UNKNOWN

This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.

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Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.

Project TVA-636 — Project Summary

TVA-636