Google’s bets on carbon capture power plants, which have a mixed record

Google said contiguous that it volition put successful a earthy state powerfulness works successful Illinois that intends to seizure the bulk of its c emissions.

The 400-megawatt powerfulness works volition beryllium built extracurricular of Decatur adjacent to an ethanol works tally by Archer Daniels Midland (ADM), which already captures CO₂ from its operations. Google volition bargain astir of the energy to powerfulness its adjacent information centers, portion ADM volition usage immoderate of the powerfulness plant’s steam and electricity. Low Carbon Infrastructure is processing the caller project.  

Google intends to seizure “approximately 90%” of the CO₂ generated by the powerfulness plant, the institution said.

Carbon dioxide from Google’s powerfulness works volition beryllium injected into the aforesaid geological retention formations already utilized by ADM’s ethanol facility. The tract is the determination of the archetypal semipermanent CO₂ retention good successful the U.S.

Typically, astir 2,000 metric tons of CO₂ are sent into the good each day. But injections determination were halted successful 2024 erstwhile salty brine, which stores dissolved CO2 heavy underground, was recovered to person migrated into “unauthorized zones,” according to the EPA. ADM said the leak was the effect of corrosion astatine a monitoring well, E&E News reported, and they’ve since resumed injections.

While c seizure and retention (CCS) shows large committedness astatine reducing c emissions from ember and earthy state powerfulness plants, it has a mixed grounds successful the field. 

A recent study of 13 CCS facilities representing 55% of each captured c shows that astir aren’t surviving up to expectations. An ExxonMobil installation successful Wyoming, which processes earthy gas, has been capturing 36% little than expected. The astir analogous to Google’s project, a 115-megawatt powerfulness works successful Canada, has lone captured astir 50% what it had promised.

CCS, erstwhile it works, tin assistance mitigate contamination from burning earthy state to make power, but it won’t bash thing to code the methane leaks that hap passim the earthy state proviso chain. Methane is simply a potent greenhouse gas, generating 84 times much warming implicit 20 years than c dioxide.

As a result, leaks tin importantly alteration the c accounting. With leakage rates of conscionable 2%, burning earthy state unabated puts it on par with coal. Capturing the c volition trim that figure, but it can’t destruct the warming generated by extracting and transporting earthy gas.