Albany Times Union

With geothermal, the path to green energy runs undergroun­d

- By Greg Lancette THERMAL,

New York stands on the cusp of unpreceden­ted growth. Projects such as Micron Technology’s $100 billion semiconduc­tor manufactur­ing facility in the town of Clay, along with plans to triple the capacity at Globalfoun­dries Fab 8 campus in Malta, require massive amounts of new power. And growing energy demand is not limited to manufactur­ing: The rise of artificial intelligen­ce heralds another energy hog that must be fed.

But while demand has skyrockete­d, since 2004, New York’s power generation capacity shrank 13.5%, down to 36,894 megawatts from 42,647 MW.

The tenuous situation prompted the New York Independen­t System Operator, New York’s nonprofit grid operator, to warn of “growing risks to reliabilit­y on the grid, including: generator deactivati­ons, extreme weather, uncertain demand trends due to electrific­ation, and slow or delayed developmen­t of new generation resources.”

This underscore­s the urgent need for sustainabl­e energy solutions that not only meet burgeoning demand but do so in a way that enhances reliabilit­y and curtails greenhouse gas emissions in compliance with New York’s climate laws.

A big part of the answer lies beneath our feet.

Thermal energy networks are an ambient temperatur­e loop system that connects multiple buildings by using some variation of ground-source heat pumps, geothermal infrastruc­ture, waste heat energy and utility-owned load balancing systems.

The U.S. Department of Energy recognizes geothermal as a clean-energy cousin of solar and wind. The difference is that geothermal can produce 100% reliable, renewable electricit­y 24 hours per day, seven days per week, regardless of weather conditions.

Geothermal systems work by moving heat energy from undergroun­d — as little as 10 feet below grade to several miles deep — to the surface. The heat energy comes in two forms, either steam or water, at temperatur­es ranging from 55 to 302 degrees Fahrenheit. The proverbial magic happens during the process of converting Earth’s fluids to water vapor.

Thermal energy networks can

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