Scrutinizing time-varying interlinkages between digitalization, green technologies, CO2 emission, and energy productivity in Vietnam

Abstract

We use an extended joint connectedness technique and the time-varying parameter vector autoregression (ETVP-VAR) method to examine connections between digitalization captured by a number of Internet users (% of the population) (INU) and mobile cellular subscriptions (per 100 people), green technology (EI), CO2 emissions (CO2), and energy productivity (EP) from 1996 to 2019 in order to examine the relationships between digitalization, green technology and energy efficient. Our results demonstrate that Internet users and mobile cellular subscriptions are identified as crucial net transmitters of shocks. In addition, the energy-efficient index turns from a shock transmitter to a shock receiver and vice versa. Moreover, CO2 emission mostly plays a role as a net receiver of shocks during the surveyed period, except for the phase between 1997 and 2000. Moreover, pairwise connectedness emphasizes the dominance of digitalization, measured by the number of individuals using the Internet all the time. In addition, digitalization performance is a net transmitter of shocks to mobile cellular subscriptions, green energy, and energy productivity. The impact of Interner users on MOBSUB and EP is significantly large, while it is smaller in that than EI and CO2 emissions.