米国調査会社ナビガントリサーチ（Navigant Research）の調査レポート「世界の省エネビルの直流（DC）電源の市場分析と予測：ビルの直流給電機器と配電インフラストラクチャ」は、新しい地域市場に既存技術が成熟し普及するに伴う商業ビルの直流（DC）電力技術市場の軌跡を考察している。開発サイクルを終了して商用化に移行している新しい技術について記載している。2028年までの収益を技術タイプ毎と地域毎に予測している。

Alternating current (AC) power is nearly ubiquitous, as conventional power grids supply AC power to commercial buildings and other users. However, certain categories of devices require direct current (DC) power. To provide DC power from an AC grid, these devices rely on internal or plug-in power supplies that convert power from AC to DC and step down voltage to the appropriate level. This conversion process results in an incremental loss of power due to inherent inefficiencies. When added together across numerous devices, the total power loss becomes more substantial.

DC offers better energy savings and improved reliability integrating DC-native resources and loads. Deployed at the building level, DC power distribution can reduce the number of required conversions, thereby increasing overall building energy efficiency. DC power systems rely on centralized, higher efficiency devices to convert AC to DC power and then distribute low- to mid-voltage DC power to various loads, including lighting, sensors, door locks, plug-in devices, actuators, controls, and more. The advantages of DC power systems become clear when considering the integration of renewable energy generation and energy storage systems.

This Navigant Research report considers the likely trajectory of markets for DC power technologies in commercial buildings as existing technologies mature and penetrate new regional markets. The study accounts for new technologies completing development cycles and moving into commercialization. Global market forecasts for revenue segmented by technology type and region extend through 2028.