Memorandum Supplementing section 4.6.4 of the GHG Mitigation Measures TSD supporting 

the final CPP. Ownership and Co-Location 

From: Matt Clouse, OAP 

One example of co-located fossil fuel-fired EGU and renewable energy installations is Sempra 

Energy’s neighboring natural gas and solar PV projects located at 701 Eldorado Valley Drive in 

Boulder City, Nevada. According to satellite imagery, the Desert Star Energy Center 480 

megawatt natural gas plant is located alongside the Copper Mountain Solar 1 and 2 plants of 58 

megawatts and 92 megawatts, respectively. 

In late 2014, the Kentucky Public Service Commission approved a request from Louisville Gas 

and Electric (LG&E) and Kentucky Utilities (KU) to construct what will be the state's largest 

solar photovoltaic facility at the utilities' E.W. Brown Generating Station, which has 3 coal units 

(113, 180 and 464 megawatt nameplate capacity) and several simple cycle natural gas units. The 

10-megawatt solar facility is expected to go online in 2016 and will provide renewable 

electricity directly to the grid, represented by the following December 22, 2014 press release 

from LG&E and KU. 

The press release, which can be found here https://lgeku.com/newsroom/articles/2014/12/22/kpsc-approves-lge-and-kus-request-build-states-largestsolar-facility as of August 2015, is titled, “KPSC Approves LG&E and KU's Request to Build 

State's Largest Solar Facility.” Here is the content of the press release. 

This project and its approval is the result of positive, productive agreements between the 

utilities, the Sierra Club and industrial partners for the benefit of Kentucky. 

The Kentucky Public Service Commission approved LG&E and KU's request to 

construct what will be the state's largest solar photovoltaic facility in Mercer County at 

the utilities' E.W. Brown Generating Station. 

“This is a good example of how LG&E and KU, the Sierra Club and our industrial 

partners worked together for a mutually beneficial solution for Kentucky," said LG&E 

and KU Chief Operating Officer Paul Thompson. 

“While Kentucky is not blessed with an abundance of wind and solar energy, the 

approval gives us the opportunity to learn more about solar technology,” said Thompson. 

“By utilizing our existing property and taking advantage of tax incentives, we can offer 

our customers another source of generation, similar to our existing hydro plants.” 

The 10-megawatt solar facility is expected to go online in 2016 and cost $36 million. 

The solar array will consist of solar panels and associated transformers, switches and 

other equipment. The number of solar panels will be driven by the final design of the 

solar array selected from the competitive bidding process. 
KU will own 61 percent of the array and LG&E the remaining 39 percent — a split based 

upon the relative load of the two utilities during daylight hours. 

LG&E and KU will continue maintaining a diverse generation portfolio and are 

continually evaluating potential energy supplies to determine which available sources 

would allow the company to sufficiently provide safe, reliable, least-cost energy using 

commercially available technologies. 

For more information, the agreement is also included in the KPSC press release that is 

attached. 
Copyrighted page(s) removed. Copyrighted 

material is not available in Regulations.gov since 

it may not be reproduced without consent of the 

copyright holder. 

Removed pages can be viewed at the USEPA 

Docket Center, Public Reading Room. 

Address: 1301 Constitution Ave, NW 

Room 3334 

Washington, DC 20004 

Telephone: 202-566-1744 

Email: docket-customerservice@epa.gov