Estimated buildout target through 2030
2027. The current operator project page identifies construction underway and expected customer supply in 2027.
Construction is verified; the completion date remains an estimate. The timeline marker represents the published target year/month, not a confirmed opening day.
Published cost and electrical output
Project cost / investmentAbout USD 902 millionCost scopePublished project-specific capital/construction estimateCost source dateSource page undated; checked 2026-10-11Electrical generating capacity645 MW — Current operator page: 645 MW nameplateVerified project stageUnder construction
Project-specific research
LG&E/KU’s current Mill Creek 5 page states a 645 MW nameplate rating, $902 million cost, construction underway and estimated completion in 2027. Its 2024 groundbreaking release used 640 MW; the current page is used for the primary output rating. EIA’s separate 740 MW figure is retained as inventory context, not extra generating capacity.
Published project-specific cost for Mill Creek 5: USD 9.02e+08. Basis: Published project-specific capital/construction estimate. Published electric generating project rating for Mill Creek 5: 645 MW. Basis: Current operator page: 645 MW nameplate.
LG&E and KU broke ground on Mill Creek 5 on November 13, 2024 and describe a 640 MW natural-gas combined-cycle unit expected in 2027. EIA’s August 2026 construction record independently supports ongoing work. The operator’s 640 MW project rating and EIA generator nameplate rating use different reported figures; retain both labels. November 13, 2024 groundbreaking verifies physical construction.
Scope and evidence
Retained only with documented physical construction, commissioning or 2025–2026 opening and published project-specific costs and electrical output. Costs use the published scope and currency; no benchmark estimates or currency conversions. MW is power capacity, not annual electricity production. Expected annual energy, where given, is a forecast. The map point is a reported plant/project location and may be approximate. Matching inventory views and excluded expansion proposals are not additive capacity.
Project images and credits
Operator rendering of Mill Creek 5. This is an illustration of the planned unit, not a photograph of a completed plant. Credit: LG&E and KU; artist not named on source page. Source page; original operator image.
Mill Creek 5 groundbreaking ceremony, November 13, 2024, as published in the operator release. Credit: LG&E and KU; photographer not named on source page. Source page; original operator image.
Project images and credits
Operator rendering of Mill Creek 5. This is an illustration of the planned unit, not a photograph of a completed plant. Credit: LG&E and KU; artist not named on source page. Operator source page; original image.
Project images and credits
Mill Creek 5 groundbreaking ceremony, November 13, 2024, as published in the operator release. Credit: LG&E and KU; photographer not named on source page. Operator source page; original image.
