Appellant Texas Utilities Electric Company (the “Utility”) filed notice of intent (“NOI”) applications to build new generating plants which appellant Public Utility Commission of Texas (the “Commission”) preliminarily approved. Appellees Public Citizen, Inc., Texas Citizen Action, Inc., Environmental Defense Fund, and the Office of Public Utility Counsel (collectively, the “Protestants”) filed suit for judicial review of the Commission’s order. The district court, after concluding it had jurisdiction, reversed the Commission’s order, holding that the Commission had not properly applied its own rule. The Commission and the Utility appeal the district court’s judgment. We will reverse the district court’s judgment.
BACKGROUND AND PROCEDURAL HISTORY
The Public Utility Regulatory Act (“PURA”), Tex.Rev.Civ.Stat.Ann. art. 1446c (West Supp.1995), requires that each public utility obtain a certificate of convenience and necessity (“CCN”) before rendering service to the public. PURA was amended in 1983 to require utilities applying for a CCN to first file an NOI application. The Commission’s NOI rule, discussed in the following section, was promulgated to specifically address and define the NOI application process. See 16 Tex.Admin.Code § 23.31(h) (1994).
The Utility filed NOI applications to construct four generating plants. The four NOIs were filed together and were considered in docket number 10400. The Protestants and others intervened to challenge the Utility’s assessment of alternatives to the proposed plants. The Commission issued an order approving the NOIs, and the Protestants and others filed motions for rehearing. Since the Commission did not act on the motions, they were overruled by operation of law pursuant to the Administrative Procedure Act, Tex.Gov’t Code Ann. § 2001.146(c) (West 1995), and the Protestants filed suit for judicial review of the Commission’s order.1 The district court first considered the Commission’s plea to the jurisdiction and ruled that the order in docket number 10400 was final and appealable. The district court then proceeded to reverse the Commission’s decision, finding that the Commission acted arbitrarily and capriciously in not construing its own rule to require the Utility to determine environmental externalities in dollars and cents.2
The Commission appeals, alleging that (1) the district court erred in denying its plea to the jurisdiction because an order approving an NOI is not a final decision and (2) the district court should have deferred to the Commission’s interpretation of its own rule as not requiring the evaluation of environmental externalities in monetary terms. The Utility also appeals alleging that the district court erred in failing to defer to the Commission’s interpretation of its own rule.
DISCUSSION
The threshold issue before us is whether the order approving the Utility’s NOI was a final, appealable decision. The Commission argues in its first point of error that an order approving an NOI is not a final decision and the district court therefore did not have jurisdiction to review the order. We agree.
In examining administrative orders, no single formula or rule disposes of all finality problems. Browning-Ferris, Inc. v. *446Brazoria County, 742 S.W.2d 43, 48 (Tex. App. — Austin 1987, no writ). A flexible approach must be employed, recognizing the need to both “minimize disruption of the administrative process and to afford regulated parties and consumers with an opportunity for timely judicial review of actions that affect them.” Texas-New Mex. Power Co. v. Texas Indus. Energy Consumers, 806 S.W.2d 230, 232 (Tex.1991). Administrative orders are generally considered final and appealable if “they impose an obligation, deny a right or fix some legal relationship as a consummation of the administrative process.” Id. (quoting Sierra Club v. United States Nuclear Regulatory Comm’n, 862 F.2d 222, 224 (9th Cir.1988)). The order must leave nothing open to dispute, unfinished, or inconclusive. People Against a Contaminated Env’t v. Texas Air Control Bd., 725 S.W.2d 810, 811 (Tex.App. — Austin 1987, writ ref d n.r.e.).
Some decisions speak of finality as a requirement for an administrative order to be “ripe” for judicial review. Browning-Ferris, 742 S.W.2d at 48^49. The doctrine of ripeness focuses on conserving judicial time and resources, which “should be expended only for controversies that are real and present as opposed to those that are merely abstract, hypothetical, or remote.” Id. at 49. The Legislature’s grant of authority to an administrative agency “requires that a court refrain from premature interruption of the administrative process.” Id.
This Court and the Texas Supreme Court examined the finality of administrative orders in Texas-New Mexico Power, cited by the parties on both sides of the present appeal. Texas-New Mexico Power presented the issue of whether a CCN conditioned upon receipt of all the necessary permits from other state and federal agencies necessary for the construction and operation of the facility was a final decision. Texas-New Mex. Power Co. v. Texas Indus. Energy Consumers, 786 S.W.2d 795, 796 (Tex.App.— Austin 1990), rev’d, 806 S.W.2d 230 (Tex. 1991). Relying on Mahon v. Vandygriff, 578 S.W.2d 144 (Tex.Civ.App. — Austin 1979, writ refd n.r.e.), which reasoned that administrative orders are not final if rights therein are conditioned upon some future event, this Court held that the conditional CCN in Texas-New Mexico Power was not a final, ap-pealable decision. Texas-New Mex. Power, 786 S.W.2d at 796. The supreme court reversed, reasoning that the presence of a condition in a CCN order does not destroy its finality because the parties’ right to seek judicial review of an order that purports to establish the parties’ rights and obligations should not depend on the uncertainties of future bureaucratic licensing and approval. Texas-New Mex. Power, 806 S.W.2d at 232.
The Protestants argue that the reasoning of the supreme court in Texas-New Mexico Power dictates that an NOI order is final and appealable. The Protestants further argue that it is illogical that denial of an NOI application can constitute a final decision, while approval of an NOI does not. Finally, Protestants point to the preamble of the Commission’s NOI rule, in which the Commission responded to concerns and complaints about the rule at the time of its adoption and stated: “res judicata and collateral estoppel will apply [to the findings in the NOI proceeding] regardless of what the rule may say.” 16 Tex.Reg. 2731, 2732 (1991). The Protestants argue that this language evidences the Commission’s intent that the NOI findings be final and dispositive.
The Commission also relies on Texas-New Mexico Power in arguing that an NOI order is not final and appealable. It claims that the NOI order does not satisfy the case law definition of finality. Furthermore, the Commission argues that the decision on an NOI is merely a prerequisite for obtaining a CCN, and is therefore not ripe for judicial review.
We must examine the NOI proceeding itself to determine whether an order approving an NOI is a final decision. “The purpose of the NOI proceeding is to identify and reject frivolous proposals, while the CCN proceeding allows an in-depth evaluation of a specific, completely designed proposal.” 16 Tex.Reg. at 2731. At the NOI stage, the Commission decides the appropriateness of the proposed plant, including whether it is feasible and reasonable in light of the alternatives, before a utility expends substantial resources in planning the proposed plant. See 16 Tex.Admin.Code § 23.31(h)(1), (2) *447(1994). The Commission evaluates the proposal based on the specificity of the plans, utility needs according to the Commission’s most recent long-term forecast, and advantages and disadvantages of the alternatives to the proposal. See id. § (h)(3), (4). However, the NOI rule expressly directs that the utility’s plans need not be final. See id. § (h)(3)(A). The NOI allows the Commission to intervene with utility planning efforts at an earlier phase than the CCN in order to review the proposed power plant in its infancy.
Approval of the NOI simply allows a utility to proceed to the CCN stage. On the other hand, a utility is unable to apply for a CCN after the denial of its NOI application. Tex.Rev.Civ.Stat.Ann. art. 1446c, § 64(e) (West Supp.1995). Thus, the denial provides the utility with a final decision that can be immediately reviewed, while the approval does not.3
The CCN is the second stage of a two-step process for approving plans for new utility plants. At the CCN stage, review of need and alternatives will be more extensive than during the NOI proceedings. 16 Tex.Reg. at 2732. Considerations excluded from the NOI proceeding, such as “the specific site or site facilities, whether conservation and alternative energy sources cannot meet the need, or whether the proposed plant is the best and most economical choice of technology available,” will be addressed at the CCN stage. 16 Tex.Admin.Code § 23.31(h)(1) (1994).
Alternatives to the proposed plant and compatibility with the Commission’s forecast must be considered in both the NOI and the CCN proceedings. Furthermore, economic analyses are weighed in both proceedings. In fact, the Commission responded to an objection to this apparent redundancy between the proceedings by stating in the preamble that the rules must remain consistent with PURA, which lists similar considerations for both proceedings. See PURA § 54(c), (d), (e) (West Supp.1995). Thus, we agree with the Commission that the only substantial difference between the NOI and the CCN is the level of review.4 After the preliminary review of the proposal at the NOI stage, the CCN proceeding provides a thorough assessment of the complete proposal of a specific plant at a specific site with more accurate cost estimates. 16 Tex.Reg. at 2731, 2734. In light of the policies underlying the ripeness and finality doctrines, we conclude that an order approving an NOI application is not a final and appealable decision. The Commission’s rules state that the NOI findings are not final or binding. See id. at 2732. No obligation is imposed; no right is denied; no relationship is fixed.
Concerning the Protestants’ argument that the NOI order is a final decision because it has res judicata and collateral estoppel effect, we note an ambiguity in the Commission’s preamble to the rule. By stating that the NOI findings will have res judicata and collateral estoppel effect, the Commission apparently intends to preclude reconsideration of some matters at the CCN proceeding.5 Irrespective of the res judicata and collateral estoppel implications from the NOI to the CCN proceedings, however, a protestant does not lose the right to raise any issue concerning a proposal, including those deci*448sions at the NOI proceeding, upon review of a final Commission decision to a court of law. That fact makes explicit the interlocutory nature of orders approving NOIs.
Our holding does not deny the parties an opportunity to seek judicial review of administrative decisions; they simply must first exhaust all administrative remedies. See Tex.Gov’t Code Ann. § 2001.171 (West 1995); Railroad Comm’n v. Ennis Transp. Co., 695 S.W.2d 706, 710 (Tex.App. — Austin 1985, writ refd n.r.e.). An approval order at the NOI stage is interlocutory in nature, and protestants can seek judicial review after the decision in the CCN proceeding. Any result to the contrary would defeat judicial economy. We sustain the Commission’s first point of error.
CONCLUSION
The Commission’s order approving the Utility’s NOI was not a final decision and the district court did not have jurisdiction to review the order. As a result, we need not address the Utility’s and the Commission’s other points of error. Because the trial court erred in denying the Commission’s plea to the jurisdiction, we reverse the trial court judgment and render judgment that the cause be dismissed for want of jurisdiction.
. "A person who has exhausted all administrative remedies available within a state agency and who is aggrieved by a final decision in a contested case is entitled to judicial review_” Tex. Gov't Code Ann. § 2001.171 (West Supp.1995).
. In this context, the phrase "environmental ex-ternalities” refers to the environmental costs and benefits of producing or consuming electricity that accrue to persons other than the Utility and its ratepayers, such as the impact of lawful emissions upon humans, animals, and vegetation near the generating plant. See 16 Tex.Admin.Code § 23.31(h)(4)(B)(ii) (1994) (requiring an assessment of such environmental costs and benefits to narrow the range of alternatives to a proposed plant).
. This duality is not inconsistent with other orders such as one in response to a motion for summary judgment. Granting a summary judgment and thereby terminating the proceeding, similar to denial of an NOI application, is immediately reviewable, while the appeal of an order denying summary judgment, like appeal of an approved NOI application, must await final judgment or decision.
. The Commission argued that a decision approving an NOI does not bind the Commission because a higher level of scrutiny is applied when considering issues at the CCN stage. The Commission analogized approval of an NOI to a finding that there is “probable cause’’ in an examining trial for a criminal case. Just as the probable cause finding is not appealable until the final trial on the merits, the Commission contends, neither should the NOI order of approval be appealable until the final decision at the CCN proceeding.
.For example, if the NOI proceeding began with assessment of thirty alternatives to a utility’s proposed plant and narrowed the number to twelve viable alternatives, discussion of any of the eighteen alternatives rejected at the NOI proceeding would not take place at the subsequent CCN proceeding.