Google to build its first thermal storage for a data center
Google has been more than creative when it comes to making its data centers more energy efficient and greener (seawater cooling and water recycling), and this week says it plans to implement a new energy efficient feature for a data center in Taiwan: thermal energy storage.
Context & Ripple Effects
Google's Taiwan announcement extends a decade-long pattern of treating the power plant and cooling loop as part of the server design rather than a facility afterthought. The company already ran a data center with no chillers in 2009, then opened a site in 2011 that is cooled entirely with ocean water, and now adds its first thermal energy storage system to that stack.
The pickup is unusually broad for a single-site facilities story — Data Center Knowledge, The Verge, Wired, and Focus Taiwan all ran versions within days — which suggests the industry reads Google's efficiency moves as a leading indicator for hyperscale design rather than one-off engineering.
First-order effects
- Google's Taiwan data center gains the ability to bank thermal energy and shift when it draws from the grid, directly cutting the site's peak electricity demand and operating cost.
Second-order effects
- Competing hyperscale operators face pressure to match site-level storage in their own designs, since Google is again demonstrating efficiency features that lower its cost per unit of computing relative to rivals still running conventional chilled plants.
Third-order effects
- If thermal storage proves out alongside chillers-less and seawater designs, grid-interaction becomes a standard requirement in large-scale data center siting, pushing utilities to price and plan around loads that can flex their draw.
The trend: Hyperscale data centers are moving from buying electricity passively to engineering their own thermal and cooling systems so that energy management becomes a competitive advantage in computing economics.