77-4-126. Royalties and rentals. Geothermal leases shall be issued at an annual rental of not less than $1 per acre, payable in advance and/or a royalty which shall not be less than 10% of the amount or value of steam or other forms of heat or energy derived from the production under the lease and sold or utilized by the lessee or reasonably susceptible to sale or utilization by the lessee and not more than 5% of any byproduct derived from production under the lease and sold or utilized or reasonably susceptible of sale or utilization by the lessee.