30 U.S. Code § 1004 - Rents and royalties
If a State, tribal, or local government is the lessee and uses geothermal resources without sale and for public purposes other than commercial generation of electricity, the Secretary shall charge only a nominal fee for use of the resource.
Any annual rental under this section that is paid with respect to a lease before the first day of the year for which the annual rental is owed shall be credited to the amount of royalty that is required to be paid under the lease for that year.
Subject to paragraphs (2) and (3), if, at any time after commercial production under a lease is achieved, production ceases for any reason, the lease shall remain in full force and effect for a period of not more than an aggregate number of 10 years beginning on the date production ceases, if, during the period in which production is ceased, the lessee pays royalties in advance at the monthly average rate at which the royalty was paid during the period of production.
The amount of any production royalty paid for any year shall be reduced (but not below 0) by the amount of any advanced royalties paid under the lease to the extent that the advance royalties have not been used to reduce production royalties for a prior year.
The Secretary shall terminate any lease with respect to which rental is not paid in accordance with this chapter and the terms of the lease under which the rental is required, on the expiration of the 45-day period beginning on the date of the failure to pay the rental.
The Secretary shall promptly notify a lessee that has not paid rental required under the lease that the lease will be terminated at the end of the period referred to in paragraph (1).
A lease that would otherwise terminate under paragraph (1) shall not terminate under that paragraph if the lessee pays to the Secretary, before the end of the period referred to in paragraph (1), the amount of rental due plus a late fee equal to 10 percent of the amount.
 So in original. The semicolon probably should be a period.
The Mineral Leasing Act, referred to in subsec. (a)(2), is act Feb. 25, 1920, ch. 85, 41 Stat. 437, as amended, which is classified generally to chapter 3A (§ 181 et seq.) of this title. For complete classification of this Act to the Code, see Short Title note set out under section 181 of this title and Tables.
2005—Pub. L. 109–58, §§ 223(a)(1)–(3), 224(a)(1), 228, 230(1)–(3), 233(a), 236(7), inserted section catchline, designated existing provisions as subsec. (a) and inserted heading, redesignated subpars. (1) and (2) of par. (c) as subpars. (A) and (B), respectively, redesignated pars. (a) to (d) as pars. (1) to (4), respectively, of subsec. (a), added new pars. (1) to (3) of subsec. (a) and struck out former pars. (1) to (4) of subsec. (a) which related to royalties for amount or value of steam or other form of heat energy, royalty for value of byproducts, payment of annual rental, and royalties in lieu of rentals.
Subsec. (b). Pub. L. 109–58, § 223(a)(4), added subsec. (b).
Subsecs. (c), (d). Pub. L. 109–58, § 224(a)(2), added subsecs. (c) and (d).
Subsec. (e). Pub. L. 109–58, § 230(4), added subsec. (e).
Subsec. (f). Pub. L. 109–58, § 232, added subsec. (f).
Subsec. (g). Pub. L. 109–58, § 233(b), added subsec. (g).
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