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PT Tower Bersama Infrastructure Tbk
Tower Bersama builds and rents out telecom towers and antenna space to mobile operators in Indonesia.
Tower Bersama owns the steel towers that hold up Indonesia's mobile phone signals. When you make a call or scroll on your phone, your signal usually travels through equipment mounted on one of its towers. The company builds these towers, owns them, and rents space on them to telecom operators like Telkom Indonesia and Indosat Ooredoo Hutchison, who install their antennas and transmission gear and pay rent every month.
The business is simple at its core: put a tower in a place where people live and work, sign up multiple operators to share it, and collect steady rent for years. Operators prefer renting over building their own towers because it saves them the huge upfront cost and lets them roll out coverage faster. One tower can host several tenants, and each extra tenant on the same tower costs almost nothing to add, so the profit margins climb with every new customer. That makes the number of tenants per tower one of the most important measures of how well the company is doing. Indonesia is a huge, spread-out country of thousands of islands, which makes building networks expensive and makes shared towers especially valuable. Tower Bersama is one of the two big independent tower companies there, competing mainly with Mitratel, the tower arm of Telkom Indonesia. Its customers are a small group of large telecom operators, so its fortunes are tied closely to how much those operators spend on expanding and upgrading their networks.
The company spends heavily on building and buying towers, and it carries a lot of debt to fund that construction. That is a common trade-off in this industry: borrow now, build towers, and collect rent for many years. The catch is that when interest rates rise or operators slow their spending, the company feels it. Its towers are long-lived assets that throw off predictable cash, which is exactly what makes the business attractive to investors, and exactly why its debt load is the thing to watch.
Saved answer · last researched 12 Nov 2026