In this article, the reporter was treated to an explanation of AEP's "power pool" (probably because she asked tougher questions).
What's in neither article is the promised merging of AEP WV sudsidiaries Appalachian Power and Wheeling Power, which was promised to the WV-PSC in AEP's last rate case.
Why all this confusion? Because Ohio is deregulating generation and AEP is trying to keep their costly generation behemoths in a regulated environment. In a deregulated, or market-based, market, costly upgrades and other costs of running these plants are wrapped into the cost of the generation bid into market. In a regulated state, these "extra" costs are covered by ratepayers of subsidiaries who "own" these assets.
Bottom line: It's all about AEP making even MORE money at your expense!