The single rule that changed everything.
On April 24, 1996, FERC issued Order 888 — a sweeping rule that would fundamentally restructure the American electricity industry. Its core requirement was deceptively simple: every public utility that owned or operated transmission facilities had to provide open, non-discriminatory access to those facilities for any wholesale power transaction.
In practice, this meant that a utility could no longer use control of the transmission grid to block competitors from reaching their customers. Any generator — including an independent generator with no affiliation to the utility — had the right to move power across utility transmission lines, as long as it paid the same tariff that the utility charged itself. The playing field was, at least in principle, level.
Order 888 accompanied a second order, Order 889, which required utilities to establish Open Access Same-time Information Systems (OASIS) — electronic bulletin boards where transmission capacity, prices, and availability were posted publicly. For the first time, any generator or power marketer could see the same transmission information that the utility's own trading desk used.
Together, Orders 888 and 889 represented a fundamental "unbundling" of the utility function. Generation, transmission, and distribution — previously integrated under a single corporate roof — were to be separated, at least functionally. A utility's transmission arm had to be run as if it were a separate company, with Chinese walls between it and the utility's generation assets.
Open access rules helped, but they didn't fully solve the problem. Utilities still owned the transmission grid and operated it, which gave them enormous leverage — and enormous temptations. Disputes about transmission access, scheduling priorities, and interconnection terms flooded into FERC. Independent generators complained that utilities were gaming the interconnection queue, adding costs and delays to discourage competition.
The real solution, FERC concluded, was structural: get the utilities out of the business of operating the transmission grid entirely, and turn that function over to an independent entity with no financial stake in the outcome of any particular generator. That entity would be the Independent System Operator — the ISO.
Order 888 was the starting gun for wholesale market competition in America. Within months, utilities in New England, the Mid-Atlantic, and the Midwest were developing proposals for regional ISOs that would operate the transmission grid on a non-discriminatory basis. The era of the vertically integrated utility monopoly was not over — but for the first time, it had a credible, federally-mandated competitor.
Washington, D.C., April 24, 1996. FERC Order 888 gave every public utility in interstate commerce sixty days to file an open-access transmission tariff — a legal document binding them to wheel competitors' power across their lines on the same terms they gave themselves. Hundreds of filings arrived by the deadline. The compliance documents revealed a landscape of inconsistency: some utilities filed comprehensive tariffs that genuinely facilitated access; others submitted minimum-viable text that satisfied the form while preserving every opportunity for discrimination. FERC spent the following decade issuing supplemental rulemakings, correcting tariff deficiencies, and standardizing the pro forma OATT to close loopholes utilities had quietly written into their filings. Order 888 established the legal right to open access; the practical reality of non-discriminatory transmission took substantially longer to build.