EXHIBIT 15

October 31, 2007

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We are aware that our report dated October 31, 2007 on our review of interim financial information of FirstEnergy Corp. (the "Company") for the three and nine month periods ended September 30, 2007 and 2006 and included in the Company's quarterly report on Form 10-Q for the quarter ended September 30, 2007, is incorporated by reference in their Registration Statements on Form S-3 (Nos. 333-48587, 333-102074 and 333-103865) and S-8 (Nos. 333-56094, 333-58279, 333-67798, 333-72766, 333-72768, 333-81183, 333-89356, 333-101472, 333-110662, and 333-146170).

Very truly yours,

PricewaterhouseCoopers LLP

EXHIBIT 15

October 31, 2007

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We are aware that our report dated October 31, 2007 on our review of interim financial information of Ohio Edison Company (the "Company") for the three and nine month periods ended September 30, 2007 and 2006 and included in the Company's quarterly report on Form 10-Q for the quarter ended September 30, 2007, is incorporated by reference in its Registration Statement on Form S-3 (No. 333-133117).

Very truly yours,

PricewaterhouseCoopers LLP

EXHIBIT 15

October 31, 2007

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We are aware that our report dated October 31, 2007 on our review of interim financial information of Pennsylvania Electric Company (the "Company") for the three and nine month periods ended September 30, 2007 and 2006 and included in the Company's quarterly report on Form 10-Q for the quarter ended September 30, 2007 is incorporated by reference in their Registration Statements on Form S-3 (Nos. 333-62295, 333-62295-01, and 333-62295-02).

Very truly yours,

PricewaterhouseCoopers LLP