House File 2682 - Introduced HOUSE FILE 2682 BY COMMITTEE ON COMMERCE (SUCCESSOR TO HF 2283) A BILL FOR An Act relating to grid-enhancing technologies and 1 reconductoring, including study and reporting requirements. 2 BE IT ENACTED BY THE GENERAL ASSEMBLY OF THE STATE OF IOWA: 3 TLSB 6805HV (1) 91 sb/js

H.F. 2682 Section 1. NEW SECTION . 478.34 Grid-enhancing technologies 1 and reconductoring. 2 1. For purposes of this section: 3 a. “Capacity” means the maximum amount of electricity that 4 can flow through a transmission line while observing industry 5 safety standards. 6 b. “Congestion” means a condition in which a lack of 7 transmission line capacity prevents the delivery of the 8 lowest-cost electricity dispatched to meet the load demand at a 9 specific location. 10 c. “Dynamic line rating system” means hardware or software 11 used to calculate the thermal limit of existing electric 12 transmission lines at a specific point in time by incorporating 13 information on real-time and forecasted weather conditions. 14 d. “Grid-enhancing technology” means hardware and software 15 that increases the capacity of electrical lines and improves 16 the congestion, efficiency, reliability, and safety of the 17 grid. “Grid-enhancing technology” includes but is not limited 18 to a dynamic line rating system, an advanced power flow control 19 system, or topology optimization. 20 e. “Power flow control system” means hardware and 21 software used to reroute electricity from overloaded electric 22 transmission lines to underutilized electric transmission 23 lines. 24 f. “Reconductored with an advanced conductor” means replacing 25 the existing electric conductor with a conductor that has a 26 direct current electrical resistance not less than ten percent 27 lower than existing conductors of a similar diameter on the 28 system and may include rebuilding support structures or other 29 associated facilities. 30 g. “Thermal limit” means the temperature an electric 31 transmission line reaches when heat from the electric current 32 flow within the electric transmission line causes excessive 33 sagging of the electric transmission line. 34 h. “Topology optimization” means a software technology 35 -1- LSB 6805HV (1) 91 sb/js 1/ 4

H.F. 2682 that uses mathematical models to identify reconfigurations 1 in the transmission grid in order to reroute electricity 2 from overloaded electric transmission lines to underutilized 3 electric transmission lines. 4 2. a. On or before January 1, 2027, and every three years 5 thereafter, each public utility or transmission company that 6 owns or operates an electric transmission line in Iowa shall 7 prepare and submit a study of the feasibility of projects 8 using grid-enhancing technologies and identifying which of 9 its transmission lines can be reconductored with an advanced 10 conductor to achieve one or more of the purposes listed in 11 paragraph “c” . 12 b. The study shall provide information on feasibility, cost, 13 rating, implementation time, and any other information deemed 14 relevant by the utilities commission and be submitted to the 15 commission in a public filing. 16 c. The study required under paragraph “a” shall be designed 17 to identify projects that can use grid-enhancing technologies 18 or reconductoring with an advanced conductor to achieve one or 19 more of the following purposes: 20 (1) Increase transmission capacity. 21 (2) Reduce transmission system congestion. 22 (3) Reduce curtailment of or increase capacity to connect 23 renewable and zero-carbon resources. 24 (4) Increase reliability. 25 (5) Reduce potential siting conflicts or land impacts from 26 the development of new electric transmission lines. 27 (6) Increase flexibility to reduce risks surrounding 28 technology and permitting uncertainties in statewide electrical 29 system planning and improve optionality for load-serving 30 entities. 31 (7) Reduce line losses. 32 (8) Increase the ability to quickly energize new customers 33 or serve increased customer load. 34 3. This section does not apply to a municipal utility, a 35 -2- LSB 6805HV (1) 91 sb/js 2/ 4

H.F. 2682 cooperative electric association, or a company or organization 1 that owns a transmission line that serves a single customer or 2 interconnects a single electric generating facility. 3 4. To meet the requirements of this section, reporting 4 parties may rely on available information and analysis 5 developed by a regional transmission organization or any 6 subgroup of a regional transmission organization and may 7 develop and include additional information as necessary. 8 EXPLANATION 9 The inclusion of this explanation does not constitute agreement with 10 the explanation’s substance by the members of the general assembly. 11 This bill relates to grid-enhancing technologies and 12 reconductoring. The bill defines terms related to electric 13 transmission capacity, congestion, and grid-enhancing 14 technologies. 15 The bill requires each public utility or transmission 16 company that owns or operates electric transmission lines 17 in Iowa to prepare and submit by January 1, 2027, and 18 every three years thereafter, a public study to the Iowa 19 utilities commission (commission) examining the feasibility 20 of projects using grid-enhancing technologies and identifying 21 reconductoring opportunities. The bill requires the study to 22 provide information on feasibility, costs, implementation time, 23 and other information deemed relevant by the commission. 24 The study must be designed to identify projects that can 25 achieve one or more specified purposes, including increasing 26 transmission capacity, reducing congestion, reducing 27 curtailment of renewable and zero-carbon resources, improving 28 reliability, reducing siting conflicts, increasing flexibility 29 to reduce risks surrounding technology, reducing line losses, 30 increasing flexibility in transmission planning, and improving 31 the ability to serve new customers or increased customer load. 32 The bill does not apply to a municipal utility, a cooperative 33 electric association, or a company or organization that 34 owns a transmission line that serves a single customer or 35 -3- LSB 6805HV (1) 91 sb/js 3/ 4

H.F. 2682 interconnects a single electric generating facility. 1 The bill allows public utilities and electric transmission 2 line companies to rely on existing analyses and information 3 developed by a regional transmission organization or its 4 subgroups to satisfy the study requirements and to include that 5 information as necessary. 6 -4- LSB 6805HV (1) 91 sb/js 4/ 4