lease, or other binding obligation, the geothermal energy and
associated resources below the surface of land are owned as real
property by:
             (1)  the landowner; or
             (2)  if the surface estate and the mineral estate of the
land have been severed, the owner of the surface estate of the land.
       (b)  Subject to the provisions of this chapter, the property
rights described by this section entitle the owner of the
geothermal energy and associated resources below the surface of
land and the owner's lessee, heir, or assignee to drill for and
produce the geothermal energy and associated resources.
       (c)  This section does not:
             (1)  apply to minerals dissolved or otherwise contained
in groundwater, including in hot brines; or
             (2)  change existing law regarding:
                   (A)  oil, gas, or mineral extraction regardless of
its heat or energy potential;
                   (B)  the rights of the dominant and servient
estates; or
                   (C)  the ownership and use of groundwater.
       SECTION 4.  This Act takes effect immediately if it receives
a vote of two-thirds of all the members elected to each house, as
provided by Section 39, Article III, Texas Constitution.  If this
Act does not receive the vote necessary for immediate effect, this