OPINION ON REMAND
This consolidated appeal is on remand from the Texas Supreme Court. Kirby Lake Development, Ltd., Miter Development Co., L.L.C., Taylor Lake, Ltd., and Friendswood Development Co. (collectively, the “Developers”) sued Clear Lake City Water Authority (the “Authority”) for breach of contract. The trial courts granted the Developers’ summary judgments.
In our original opinions, we reversed the trial courts’ summary judgments and rendered judgment in favor of the Authority on a contract interpretation ground in both cases. See Clear Lake City Water Auth. v. Kirby Lake Dev., Ltd., 274 S.W.3d 41 (Tex.App.-Houston [14th Dist.] 2008) (“Kirby Lake 77”), rev’d, 320 S.W.3d 829, 842-43 (Tex.2010) (“Kirby Lake IV”); Clear Lake City Water Auth. v. Friendswood Dev. Co., No. 14-07-00404-CV, 2008 WL 5131932 (Tex.App.-Houston [14th Dist.] Dec. 9, 2008) (mem. op.) (“Friendswood II ”), rev’d, Kirby Lake IV, 320 S.W.3d at 842-43. The Texas Supreme Court reversed and remanded, determining that our contract interpretation was erroneous and that the Authority had breached the agreements with the Developers by failing to include a measure authorizing the issuance of bonds for purchase of the Developers’ facilities in the 2004 bond election (the “2004 bond measure”).1 Kirby Lake IV, 320 S.W.3d at 832.
On remand, this court granted the Developers’ motion to consolidate the two *517cases. The issues remaining on remand are whether (1) the Developers conclusively established the causation element of their breach of contract claim, (2) the Authority raised a fact issue on its affirmative defense of lack of causation, (3) the trial courts erred in striking portions of the Authority’s summary-judgment evidence, (4) the trial courts erred in awarding contractual interest because the Developers failed to conclusively prove the applicable interest rate, (5) the trial courts erred in setting pre- and post-judgment interest rates, (6) the trial court in Kirby Lake2 erred in issuing a writ of execution,3 and (7) the trial court in Friendswood erred in granting a mandatory injunction that the Authority raise taxes to pay the judgment. We affirm the judgment in the Kirby Lake case, but we reverse the judgment in Friendswood and remand for further proceedings consistent with this opinion.
BACKGROUND
The overall facts of these cases are well-developed in the Texas Supreme Court’s opinion in Kirby Lake Development Limited v. Clear Lake City Water Authority. See id. at 832-35. Therefore, we focus our background exposition on the facts relevant to the remaining dispositive issues and direct the reader to the Supreme Court’s opinion for a more general background.
As part of constructing new residential developments, the Developers built water and sewer facilities. Pursuant to “pre-funding” agreements among the parties, the Authority agreed to operate the facilities under a rent-free lease with the Developers, and the Authority was responsible for maintenance and insurance of the facilities and water and sewage lines. The Authority further agreed to include measures authorizing bonds sufficient to reimburse the Developers for seventy percent of their construction in “any” bond election held subsequent to the effective date of the agreements. If such a bond measure passed, the Authority was obliged to buy the facilities from the Developers with this bond money.
In 1998, the Authority held two bond elections that included such bond measures. These measures failed to pass.4 In September 2004, the Authority held another bond election which did not include such a bond measure. The bonds proposed in this election were approved by the voters. The Developers then sued the Authority for breach of contract. The parties filed several motions, pleas, and responses, including cross-motions for summary judg*518ment. As is relevant to these cases on remand,5 Friendswood Development Company (“Friendswood”) asserted in its summary-judgment motion that (1) voter approval was no longer a condition precedent to the Authority’s obligation to purchase the facilities from them because the Authority’s breach of contract, i.e., its failure to include the 2004 bond measure in the September 2004 bond election, prevented the occurrence of the condition; (2) it was entitled to $1,120,235.99 in damages, as well as pre- and post-judgment interest on its damages, and (3) section 49.066(b) of the Texas Water Code provides that courts may order a water authority board to “levy, assess, and collect taxes or assessments to pay [a] judgment.” The Kirby Lake plaintiffs likewise contended in their summary-judgment motions that the condition precedent of voter approval was no longer necessary to their recovery of contract damages, and they also asserted that the contract rate could be calculated and recovered at the rate of interest set on the bonds authorized by the September 2004 election.
The Authority responded in both cases by asserting that: (1) the funding for the sales requires voter approval, and no voter approval was given, (2) the Developers cannot prove that voter approval would have been given, and (3) the Authority can prove that the voters would have rejected the bonds. On September 5, 2005, the trial court in Kirby Lake granted the Kirby Lake plaintiffs’ motions for summary judgment. In its final judgment, the trial court awarded damages as follows: (a) $713,141.00 to Kirby Lake Development, Ltd.; (b) $514,783.00 to Taylor Lake, Ltd.; and (c) $80,032.00 to Miter Development Company, LLC. The trial court further ordered that the Kirby Lake plaintiffs recover 6 percent pre-judgment interest6 and 8.25 percent post-judgment interest on their damages awards and costs of court. The trial court further ordered that execution issue for the judgment. In its final judgment in the Friendswood ease, signed February 12, 2007, the trial court granted Friendswood’s motion for summary judgment, awarded Friendswood $1,120,235.00 in damages with pre-judgment interest set at 6 percent7 and post-judgment interest set at 8.25 percent and costs of court, and ordered the Authority’s board of directors to levy, assess, and collect taxes or assessments to pay the amounts awarded to Friendswood.
The Authority filed motions for new trial in both cases. As is relevant here, the Authority challenged causation of damages, the pre- and post-judgment interest rates awarded to the Developers, the in-junctive relief awarded in the Friendswood case requiring the Authority to assess and collect taxes to pay the damages awarded *519to Friendswood, and the order that execution issue in the Kirby Lake case. These motions for new trial were overruled,8 and these appeals timely followed.
ANALYSIS
A. Standard of Review
We review a trial court’s summary judgment de novo. Valence Operating Co. v. Dorsett, 164 S.W.3d 656, 661 (Tex.2005). In reviewing a summary judgment, we take as true all evidence favorable to the nonmovant, indulging every reasonable inference, and we resolve any doubts in the nonmovant’s favor. Nixon v. Mr. Prop. Management Co., 690 S.W.2d 546, 549 (Tex.1985). Where, as here, the trial court grants the judgment without specifying the grounds, we affirm the summary judgment if any of the grounds presented are meritorious. FM Props. Operating Co. v. City of Austin, 22 S.W.3d 868, 872-873 (Tex.2000). In a traditional motion for summary judgment, if the movant’s motion and summary judgment evidence facially establish its right to judgment as a matter of law, the burden shifts to the nonmovant to raise a genuine, material fact issue sufficient to defeat summary judgment. M.D. Anderson Hosp. & Tumor Inst. v. Willrich, 28 S.W.3d 22, 23 (Tex.2000).
B. The Condition Precedent of Voter Approval
The Texas Supreme Court concluded that the Authority had breached its contracts with the Developers by failing to include the 2004 bond measure in the 2004 bond election. See Kirby Lake IV, 320 S.W.3d at 832. We have determined previously that voter approval of such a bond measure is a condition precedent to the Authority’s obligation to purchase the facilities from the Developers. See Clear Lake City Water Auth. v. Kirby Lake Dev., Ltd., 123 S.W.3d 735, 745 (Tex.App.Houston [14th Dist.] 2003, pet. denied).
Here, the parties disagree about the consequences of the Authority’s breach. In its seventh and eighth issues,9 the Authority contends that the Developers failed to prove their entitlement to judgment as a matter of law on their contract claims because they did not conclusively prove that the condition precedent of voter approval would have occurred but for the Authority’s breach of contract, or, at a minimum, that the Authority raised a genuine issue of material fact in this regard. The Developers, on the other hand, assert that the Authority’s breach of the contract prevented the occurrence of the condition precedent — voter approval — thus excusing the nonoccurrence of this condition. We agree with the Developers.
Generally, a party who “prevents or makes impossible” the occurrence of a condition precedent upon which its liability under a contract depends cannot rely on the nonoccurrence to escape liability.10 *520The Authority failed to include the 2004 bond measure in the September 2004 bond election, resulting in a breach of the agreements with the Developers. See Kirby Lake IV, 320 S.W.3d at 832. This breach by the Authority prevented or made impossible the occurrence of the condition precedent of voter approval. See II Deerfield Ltd. P’ship v. Henry Bldg., Inc., 41 S.W.3d 259, 265 (Tex.App.-San Antonio 2001, pet. denied).
The Authority counters by asserting that nonoccurrence of this condition, i.e., voter approval, is not excused if the Authority can establish that the voters would not have approved the 2004 bond measure had it been included on the ballot. In support of its position, the Authority cites the Restatement (Second) of Contracts § 245 (1981).11 But this section of the Restatement has not been adopted by the Texas Supreme Court. The Authority also cites Kiewit Texas Mining Co. v. Inglish, 865 S.W.2d 240, 245 (Tex.App.-Waco 1993, writ denied) and Fair v. Uhr, 310 S.W.2d 125, 128 (Tex.Civ.App.-Fort Worth 1958, writ refd n.r.e.). Kiewit Texas Mining Co. involved a repudiation of a contract, rather than a breach. 865 S.W.2d at 245. The Waco Court of Appeals simply quoted comment (a) to section 255 of the Restatement for this proposition, without providing any other authority.12 Id. Moreover, the Authority relies on section 245 of the Restatement to support its position, rather than section 255. In Fair v. Uhr, the Fort Worth Court of Civil Appeals cited section 295 of the Restatement (First) of Contracts, which, as noted above, is not the section upon which the Authority seeks to rely here. 310 S.W.2d at 128. We thus find these cases inapposite.13
Under the facts of this case, we find more persuasive the general rale in Texas that a party who “prevents or makes impossible” the occurrence of a condition precedent upon which its liability under a contract depends cannot rely on the nonoccurrence to escape liability. Accordingly, the Authority cannot rely on a projected failure of voter approval, which it prevented or made impossible by breaching its agreement to include the bond measure on every bond election held subsequent to the agreements, to escape its liability to purchase the Developers’ facilities. We conclude that the trial court properly granted summary judgment to the Developers’ on this basis, and overrule the Authority’s seventh and eighth issues.
As a peripheral argument in the Friendswood case only, the Authority asserts in its ninth issue that Friendswood has “failed to prove conclusively that it provided proof to the Authority of its ability to convey unencumbered title ownership to the facilities and assign all warranties and guarantees relating to them.” This argument puts the cart before the horse: this condition would have been triggered only after the Authority had obtained voter *521approval to issue bonds for the purchase of the facilities from Friendswood or otherwise stood ready to purchase the facilities. The Authority prevented or made impossible the condition precedent of voter approval by failing to include the 2004 bond measure on the 2004 bond election ballot, ie., by breaching the agreement. It would defy logic to conclude that Friendswood’s alleged failure to fulfill a condition that would have been prompted only if the Authority stood ready to purchase the facilities could excuse the Authority’s breach, which prevented or made impossible the Authority’s obligation to purchase the facilities. We thus overrule the Authority’s ninth issue in the Friendswood case.
C. Interest Rates
The award of interest in the trial courts’ final judgments in these eases includes three separate components. The first is the interest expressly provided by Section 3.02 of the agreements as one of the components of the purchase price of the Developers’ facilities. This contractual interest on the purchase price of the facilities ceased to accrue several years before the September 2004 election and was included in the actual damage awards to the Developers in the trial court’s judgments. The second component of the trial court’s final judgment is pre-judgment interest at the rate of 6 percent per year, which runs from the moment of breach (September 11, 2004) until entry of the judgment. The third component is post-judgment interest at the statutory rate of 8.25 percent. The Authority challenges the trial court’s judgments as to all three interest components.
1. Interest Specified in the Agreements
Based on conclusive proof that the Authority breached the agreements and the excuse of the nonoccurrence of the voter-approval condition precedent, the Developers are entitled to recover the benefit-of-the bargain damages that they seek, namely payment of the “Purchase Price,” which is defined in the agreements as follows:
The purchase price (the “Purchase Price”) to be paid by the Authority for the sale and/or assignment described in the preceding Section shall be as follows: an amount equal to the sum of the amounts paid by the Developer for design of the Facilities, for construction of the Facilities pursuant to the Contracts (including any approved change orders), for inspection of performance under the Contracts, and for clearing or other miscellaneous costs (including costs of acquisitions of sites for any lift stations and sites for water storage facilities included in the Contracts) attributable to construction or maintenance of the Facilities, plus interest on such amounts from the date of such payments to the date of reimbursement by the Authority at the rate of interest equal to the lesser of (i) the rate of interest actually incurred by the Developer to fund such payments or, if the purchase price is paid in whole or in part from proceeds of bonds of the Authority, (ii) the average net effective interest rate borne by such bonds; provided, however, that if such purchase price is paid in whole or in part from proceeds of bonds of the Authority, such purchase price or part thereof shall be subject to the Rules and applicable orders of the [Texas Commission on Environmental Quality].
(emphasis added).
Calculation of Damages in the Courts Below
The parties agreed that the interest component of the Purchase Price would accrue for only two years because of certain limitations on such interest imposed by the Texas Commission on Environmen*522tal Quality and that any such interest would have ceased to accrue several years before the September 2004 election. See 30 Tex. Admin. Code § 293.50(a) (2010) (Tex. Comm’n on Envtl. Quality, Developer Interest Reimbursement). In the judgments below, the trial court awarded each of the Developers the respective Purchase Price as contract damages, calculating this amount by adding seventy percent of the construction costs14 and two years’ interest on these costs. As requested by the Developers, the trial courts used an interest rate of 3.930798% based on the average net effective interest rate of the bonds that were approved by the voters in the September 2004 election. There was no summary-judgment evidence regarding (1) the rate of interest that any of the Developers actually incurred to fund the construction of the facilities or (2) the average net effective interest rate that would have been borne by bonds had they been issued to fund payment of the Purchase Price under the agreements.
In the Kirby Lake case, the parties stipulated that the Authority reserved the right to contest the Kirby Lake plaintiffs’ entitlement to interest on the ground that, even if the Authority is liable for breach of contract, no bonds have been sold to purchase the Kirby Lake plaintiffs’ facilities, and under the agreements the specified interest rate is zero in the absence of such a bond sale. However, the parties also stipulated that “in the event that this legal argument is ultimately rejected by the courts, ... the developer interest under Section 3.02 of each of the Agreements is recoverable in the following amounts: [the amounts awarded by the trial court to the Kirby Lake plaintiffs].” There is no such stipulation in Friendswood.
The Authority’s Arguments Regarding the Interest Formula in the Agreements
In its ninth issue in Kirby Lake and tenth issue in Friendswood, the Authority argues that, because no bonds were ever sold to pay for the Purchase Price under any of the agreements, the Developers cannot prove what the interest rate is under the formula defined by the Purchase Price. Therefore, the Authority argues that the Developers cannot recover this interest component of the Purchase Price as a matter of law and these interest amounts should be deleted from the two trial court judgments. In the alternative, the Authority asserts that, if the formula could be used at all, the average net effective interest rate borne by the bonds would be zero, and therefore, the interest rate would be zero. In Friendswood, the Authority also argues that Friendswood failed to prove the applicable rate for the interest component of the Purchase Price. The Authority asserts that this interest rate cannot be determined because Friendswood did not provide any summary-judgment evidence regarding either (1) the rate of interest actually incurred by Friendswood to fund the payments for the construction of the facilities, or (2) the average net effective interest rate borne by any bonds sold by the Authority to pay the Purchase Price.
Beneftt-of-the Bargain Measure of Damages
The Authority asserts that, because no bonds were ever sold to pay for the Purchase Price under any of the agreements, the Developers cannot prove what the interest rate is under the formula in *523the definition of Purchase Price. But “[t]he ultimate goal in measuring damages for a breach-of-contract claim is to provide just compensation for any loss or damage actually sustained as a result of the breach.” Mays v. Pierce, 203 S.W.3d 564, 577 (Tex.App.-Houston [14th Dist.] 2006, pet. denied); Walden v. Affiliated Computer Servs., Inc., 97 S.W.3d 303, 328 (Tex.App.-Houston [14th Dist.] 2003, pet. denied). The Developers sought and the trial courts awarded benefit-of-the-bargain damages based on the Purchase Price that the Authority would have paid for the facilities. The purpose of the benefit-of-the-bargain measure of damages is to restore the injured party to the economic position it would have been in had the contract been fully performed. Mays, 203 S.W.3d at 577.
It is undisputed that the Authority never issued any bonds to fund the payment of the Purchase Price to any of the Developers. But this fact does not prevent the Developers from proving what the average net effective interest rate would have been for bonds sold by the Authority to pay the Purchase Price if the Authority had fully performed under the agreements and the voters had authorized such bonds in September 2004. See Italian Cowboy Partners v. Prudential Ins. Co. of Am., 341 S.W.3d 323, 345-346 (Tex.2011) (concluding that evidence was legally sufficient to support amount of damages awarded upon rescission of lease based on expert testimony regarding amount of money necessary to restore plaintiff to the position it would have been in had it not entered into lease and noting that, under this measure of damages, plaintiff did not need to prove damages based on the actual facts and circumstances regarding the latent defect that entitled plaintiff to rescind lease); Keck, Mahin & Cate v. Nat’l Union Fire Ins. Co. of Pittsburgh, 20 S.W.3d 692, 703 & n. 5 (Tex.2000) (stating that, even if underlying litigation settled, to show causation in negligence claim against attorneys, client has to prove that if underlying case were tried and client had been represented by reasonably prudent attorneys, judgment rendered in underlying case would have been more favorable than settlement obtained by allegedly negligent lawyers); Dickinson v. Auto Ctr. Mfg. Co., 594 F.2d 523, 529 (5th Cir.1979) (holding that expert’s testimony regarding the position plaintiff would have been in if defendant had completely performed contract raised fact issue regarding amount of plaintiffs benefit-of-the-bargain damages).
The Authority’s argument is based on the facts as they actually occurred: (1) the Authority breached the agreements; (2) the 2004 bond measure was not submitted to the voters for approval; and (3) no bonds were issued to fund payment of the Purchase Price by the Authority under any of the agreements. But the benefit-of-the-bargain measure of damages is not based on the facts as they actually occurred; rather, it focuses on what the plaintiffs economic position would have been if the contract had been fully performed. Mays, 203 S.W.3d at 577. The Authority’s argument is contrary to the benefit-of-the-bargain measure of damages and cases applying it. See Miga v. Jensen, 96 S.W.3d 207, 215-16 (Tex.2002) (measuring contract damages based on difference between value of stock at time it was supposed to be sold to option-holder and costs that option-holder would have incurred in purchasing stock, even though option-holder did not actually incur these costs and option-holder did not receive stock on the date in question); Avenell v. Chrisman Props., L.L.C., No. 14-08-01180-CV, 2010 WL 1379972, at *4 (Tex.App.-Houston [14th Dist.] Apr. 8, 2010, no pet.) (affirming award of benefit-of-the-bargain damages under lease provision *524setting damages based on all rent remaining to be paid under lease, even though, because of lessee’s breach, such amounts were not actually paid and even though lessor no longer owned property in question); Huynh v. Phung, No. 01-04-00267-CV, 2007 WL 495023, at *6-7 (Tex.App.Houston [1st Dist.] Feb. 16, 2007, no pet.) (affirming award of benefit-of-bargain damages based upon defendants’ promise to repay investment to plaintiff after sale of business, even though business was never actually sold); Bowen v. Robinson, 227 S.W.3d 86, 96-99 (Tex.App.-Houston [1st Dist.] 2006, pet. denied) (holding evidence was sufficient to support award of lost profits as benefit-of-the-bargain damages based on evidence of economic position builder would have been in if owner had not breached and if builder had been able to fully perform under contract); Walden, 97 S.W.3d at 328-29 (measuring contract damages based on difference between value of the stock on first day that option-holder could have received stock and costs that option-holder would have incurred in purchasing stock, even though option-holder did not actually incur these costs and option-holder did not receive stock on date in question).
For these reasons, the failure of the Authority to issue any bonds to fund the payment of the Purchase Price to any of the Developers does not prevent the Developers from recovering benefit-of-the-bargain damages based on evidence of what the interest rate would have been under the contractual formula had the Authority fully performed under the Agreement. In addition, this failure does not mean that the average net effective interest rate of the bonds in question must be deemed to be zero, thus making the interest rate for the Purchase Price zero as well.
Kirby Lake
In Kirby Lake, the Authority stated that if the foregoing legal argument were rejected, then the Authority stipulated to the amounts of interest under section 3.02 that the trial court awarded to the Kirby Lake plaintiffs. Because this court rejects the Authority’s legal argument, the Authority’s stipulation supports the trial court’s award of these interest amounts to the Kirby Lake plaintiffs as a matter of law, even though there was no summary-judgment evidence as to either (1) the rate of interest actually incurred by the Kirby Lake plaintiffs to fund the payments for the construction of the facilities, or (2) what the average net effective interest rate would have been on the Authority’s bonds if the Authority had fully performed under the agreement and issued bonds to fund payment of the Purchase Price. Therefore, in Kirby Lake, we overrule the Authority’s ninth issue.
Friendswood
In Friendswood, there is no such stipulation. Friendswood had the burden of conclusively proving the interest rate under the formula in section 3.02. See Tex.R. Civ. P. 166a(c); M.D. Anderson Hosp. & Tumor Inst. v. Willrich, 28 S.W.3d 22, 23 (Tex.2000). There was no stipulation, nor was there any evidence showing the lesser of (1) the rate of interest actually incurred by Friendswood to fund the payments for the construction of the facilities, and (2) what the average net effective interest rate would have been on the Authority’s bonds if the Authority had fully performed under the agreement and issued bonds to fund payment of the Purchase Price to Friendswood. There was no evidence that a bond for the additional $1.1 million would have had the same interest rate as the actual interest rate Friendswood incurred to fund the pay-*525merits for construction of the facilities. On this record, though Friendswood proved its entitlement to the $1,038,586.51 in construction costs as a matter of law, the trial court erred in awarding Friendswood judgment as a matter of law as to the interest component of the Purchase Price. But the Authority did not file a cross-motion for summary judgment on this point. Therefore, in Friendswood, we sustain the Authority’s tenth issue, reverse the trial court’s judgment, and remand for further proceedings regarding the amount of interest that Friendswood is entitled to recover under section 3.02 of its agreement and for rendition of judgment in Friends-wood’s favor. See Coward v. Gateway Nat’l Bank of Beaumont, 525 S.W.2d 857, 860 (Tex.1975) (reversing summary judgment in favor of plaintiff and remanding for further proceedings because court concluded plaintiff was not entitled to summary judgment as to amount of attorney’s fees); A.W. Wright & Assoc., P.C. v. Glover, Anderson, Chandler & Uzick, L.L.P., 993 S.W.2d 466, 470-71 (Tex.App.-Houston [14th Dist.] 1999, pet. denied) (remanding rather than rendering or affirming as modified after reversing summary judgment that trial court erroneously rendered in plaintiffs favor).
2. Pre- and Post-Judgment Interest Rates
In issue ten in Kirby Lake and issue eleven in Friendswood, the Authority asserts that the pre- and post-judgment statutory interest rates imposed by the trial courts are improper because the agreements themselves set the interest rate. The Authority relies on the rates of interest discussed in section 3.02 of the agreements, excerpted above, to support this argument.
Post-judgment interest — and therefore pre-judgment interest15 — in a contract case where the contract provides for interest is the lesser of the interest rate specified in the contract or eighteen percent a year. Tex. Fin.Code Ann. § 304.002 (West 2006). If the contract does not provide for interest, then the post-judgment and prejudgment interest rate is five to fifteen percent a year based upon the prime rate.16 See id. § 304.003; see also Exxon-Mobil Corp. v. Valence Operating Co., 174 S.W.3d 303, 319-20 (Tex.App.-Houston [1st Dist.] 2005, pet. denied) (applying section 304.003 to determine pre-judgment interest rate).
As discussed above, the only interest rate upon which the Authority relies is the reference in section 3.02 to the interest rate applicable to the purchase price of the facilities. We see no basis for that interest rate, with its particular uses and limitations applicable only to the purchase price of the facilities, to supplant the statutory interest rate. Cf. Meridien Hotels, Inc. v. LHO Fin. P’ship I, L.P., 255 S.W.3d 807, 824-25 (Tex.App.-Dallas 2008, no pet.) (op. on reh’g) (concluding that interest rate defined in lease should not be applied because it did not purport to make rate apply to unpaid holdover rent and thus statutory rate of interest applied). Further, the cases cited by the Authority do not sup*526port its argument. In Adams v. H & H Meat Products, Inc., the parties agreed by contract to the rate at which past due invoices would bear interest. 41 S.W.3d 762, 780 (Tex.App.-Corpus Christi 2001, no pet.). In AU Pharmaceutical, Inc. v. Boston, the creditors expressly agreed that the funds to which they were entitled “shall not appreciate with interest or by any other means, the parties specifically agreeing that any interest to be charged on the Settlement Proceeds to equal zero (0) percent.” 986 S.W.2d 331, 333 (Tex.App.-Texarkana 1999, no pet.).
The parties’ agreements do not address any interest rates related to past due amounts; instead, as discussed above, the only interest rates contemplated by the agreements are for interest due to the Developers on the purchase price of their facilities. Accordingly, the applicable pre- and post-judgment interest rates must be determined under section 304.003, which applies when section 304.002 does not. See Tex. Fin.Code Ann. § 304.003; see also Meridien Hotels, Inc., 255 S.W.3d at 824-25. We overrule the Authority’s pre- and post-judgment interest rate issues.
D. Writ of Execution and “Injunctive” Relief
In its final issue in Kirby Lake, the Authority complains that the district court’s writ of execution to enforce the judgment is erroneous in that it violates public policy. Although the final judgment authorizes issuance of a writ of execution should the Kirby Lake plaintiffs seek one, nothing in our record indicates that a writ of execution has issued. Therefore, determining this issue would be premature at this point. If and when the Kirby Lake plaintiffs seek a writ of execution, the Authority may then raise this issue. We thus overrule the Authority’s final issue in the Kirby Lake case.
In Friendswood, the Authority contends that the trial court had no basis to instruct the Authority to “levy, assess and collect taxes or assessments to pay the amounts awarded to [Friendswood] in this Final Judgment.” However, the Texas Water Code explicitly authorizes “[a]ny court in the state rendering judgment for debt against a district [to] order the board to levy, assess, and collect taxes or assessments to pay the judgment.” Tex. Water Code Ann. § 49.066(b) (West 2008). Section 49.066(b) of the Texas Water Code authorizes any court in this state to order a water authority to assess taxes to pay judgments for contract damages. Id. The Authority asserts in a eonclusory manner that this section contemplates a “mandamus remedy.” The Authority cites no authority for this proposition, and none of the cases cited in this section of its brief concern the Texas Water Code or any other statute clearly authorizing such a remedy.17 Because the trial court’s judgment tracks the statutory language permitting a court rendering judgment to order a water authority board to levy, assess, and collect taxes or assessments to pay the judgment, we overrule the Authority’s final issue in the Friendswood case.
CONCLUSION
We have sustained the Authority’s tenth issue regarding the award of interest in the Friendswood case. Accordingly, in Friendswood only, we reverse the trial court’s judgment and remand for further proceedings regarding the amount of interest that Friendswood is entitled to recover *527under section 3.02 of its agreement and for rendition of judgment in Friendswood’s favor. Having overruled all of the Authority’s issues in the Kirby Lake case, we affirm that judgment.