UNITIL CORP 10-K

Item 2. Properties As of December 31, 2022, Unitil owned through its natural gas and electric distribution utilities, five utility operating centers located in New Hampshire, Maine and Massachusetts. The Company’s real estate subsidiary, Unitil Realty, owns the Company’s corporate headquarters building and the land on which it is located in Hampton, New Hampshire. The following tables detail certain of the Company’s electric and natural gas operations properties. Electric Operations Description Unitil Energy Fitchburg Total Primary Transmission and Distribution Pole Miles—Overhead 1,284 450 1,734 Conduit Distribution Bank Miles—Underground 239 69 308 Transmission and Distribution Substations 35 15 50 Transformer Capacity of Transmission and Distribution Substations* (MVA) 470.1 429.4 899.5 * Does not include load served directly from sub-transmission. Natural Gas Operations Northern Utilities Description NH ME Fitchburg Granite State Total Underground Natural Gas Mains—Miles 579 610 272 — 1,461 Natural Gas Transmission Pipeline—Miles — — — 86 86 Service Pipes 24,638 23,902 11,242 — 59,782 Unitil Energy’s electric substations are located on land owned by Unitil Energy or land occupied by Unitil Energy pursuant to perpetual easements in the southeastern seacoast and state capital regions of New Hampshire . Unitil Energy’s electric distribution lines are located in, on or under public highways or private lands pursuant to lease, easement, permit, municipal consent, tariff conditions, agreement or license, expressed or implied through use by Unitil Energy without objection by the owners. In the case of certain distribution lines, Unitil Energy owns only a part interest in the poles upon which its wires are installed, the remaining interest being owned by telecommunication companies. 14 The physical utility properties of Unitil Energy, with certain exceptions, and its franchises are subject to its indenture of mortgage and deed of trust under which the respective series of first mortgage bonds of Unitil Energy are outstanding. Fitchburg’s electric substations, with minor exceptions, are located in north central Massachusetts on land owned by Fitchburg or occupied by Fitchburg pursuant to perpetual easements. Fitchburg’s electric distribution lines and gas mains are located in, on, or under public highways or private lands pursuant to lease, easement, permit, municipal consent, tariff conditions, agreement or license, express or implied through use by Fitchburg without objection by the owners. Fitchburg owns full interest in the poles upon which its wires are installed. The Company’s natural gas operations property includes two liquefied propane gas plants and two liquid natural gas (LNG) plants. Northern Utilities also owns a propane air gas plant and an LNG storage and vaporization facility. Fitchburg owns a propane air gas plant and an LNG storage and vaporization facility, both of which are located on land owned by Fitchburg in north central Massachusetts. Northern Utilities’ gas mains are primarily made up of polyethylene plastic(83.4%), coated and wrapped cathodically protected steel (15.4%), cast/wrought iron (1.1%), and unprotected bare and coated steel (0.1%). Fitchburg’s gas mains are primarily made up of coated steel (43.9%), bare steel (1.3%), polyethylene plastic (42.2%), cast iron (12.1%) and wrought and ductile iron (0.5%). Granite State’s underground natural gas transmission pipeline, regulated by the FERC, is located primarily in Maine and New Hampshire. The Company believes its facilities are currently adequate for their intended uses.