diff --git a/R/idf.R b/R/idf.R
index a8a47074f..c11fbf101 100644
--- a/R/idf.R
+++ b/R/idf.R
@@ -2478,6 +2478,12 @@ Idf <- R6::R6Class(classname = "Idf",
         #'        standard output and error from EnergyPlus. Default: same as
         #'        `wait`.
         #'
+        #' @param readvars If `TRUE`, the `ReadVarESO` post-processor will run
+        #'        to generate CSV files from the ESO output. Since those CSV
+        #'        files are never used when extracting simulation data in eplusr,
+        #'        setting it to `FALSE` can speed up the simulation if there are
+        #'        hundreds of output variables or meters. Default: `TRUE`.
+        #'
         #' @return An [EplusJob] object of current simulation.
         #'
         #' @examples
@@ -2501,6 +2507,9 @@ Idf <- R6::R6Class(classname = "Idf",
         #' # copy all external files into the directory run simulation
         #' idf$run(epw, dir = tempdir(), copy_external = TRUE)
         #'
+        #' # run simulation without generating CSV files from ESO output
+        #' idf$run(epw, dir = tempdir(), readvars = FALSE)
+        #'
         #' # check for simulation errors
         #' job$errors()
         #'
@@ -2517,8 +2526,8 @@ Idf <- R6::R6Class(classname = "Idf",
         #' job$report_data()
         #' }
         #'
-        run = function(weather, dir = NULL, wait = TRUE, force = FALSE, copy_external = FALSE, echo = wait)
-            idf_run(self, private, weather, dir, wait, force, copy_external = copy_external, echo),
+        run = function(weather, dir = NULL, wait = TRUE, force = FALSE, copy_external = FALSE, echo = wait, readvars = TRUE)
+            idf_run(self, private, weather, dir, wait, force, copy_external = copy_external, echo = echo, readvars = readvars),
         # }}}
 
         # last_job {{{
@@ -3344,7 +3353,7 @@ idf_save <- function(self, private, path = NULL, format = eplusr_option("save_fo
 # }}}
 # idf_run {{{
 idf_run <- function(self, private, epw, dir = NULL, wait = TRUE,
-                     force = FALSE, copy_external = FALSE, echo = wait) {
+                     force = FALSE, copy_external = FALSE, echo = wait, readvars = TRUE) {
     # check if the model is still running
     old <- private$m_log$job
     if (!inherits(old, "EplusJob")) {
@@ -3355,7 +3364,7 @@ idf_run <- function(self, private, epw, dir = NULL, wait = TRUE,
     }
 
     private$m_log$job$run(epw = epw, dir = dir, wait = wait, force = force,
-        echo = echo, copy_external = copy_external
+        echo = echo, copy_external = copy_external, readvars = readvars
     )
 }
 # }}}
diff --git a/R/job.R b/R/job.R
index ed63cf6ba..16462b9ea 100644
--- a/R/job.R
+++ b/R/job.R
@@ -180,10 +180,13 @@ EplusJob <- R6::R6Class(classname = "EplusJob", cloneable = FALSE,
         #'
         #' # copy external files used in the model to simulation output directory
         #' job$run(copy_external = TRUE)
+        #'
+        #' # run simulation without generating CSV files from ESO output
+        #' job$run(epw, dir = tempdir(), readvars = FALSE)
         #' }
         #'
-        run = function(epw, dir = NULL, wait = TRUE, force = FALSE, echo = wait, copy_external = FALSE)
-            job_run(self, private, epw, dir, wait, force, echo, copy_external),
+        run = function(epw, dir = NULL, wait = TRUE, force = FALSE, echo = wait, copy_external = FALSE, readvars = TRUE)
+            job_run(self, private, epw, dir, wait, force, echo, copy_external, readvars),
         # }}}
 
         # kill {{{
diff --git a/man/EplusJob.Rd b/man/EplusJob.Rd
index 63d8de450..47cd0989f 100644
--- a/man/EplusJob.Rd
+++ b/man/EplusJob.Rd
@@ -110,6 +110,9 @@ job$run(echo = FALSE)
 
 # copy external files used in the model to simulation output directory
 job$run(copy_external = TRUE)
+
+# run simulation without generating CSV files from ESO output
+job$run(epw, dir = tempdir(), readvars = FALSE)
 }
 
 
@@ -464,7 +467,8 @@ Run simulation
   wait = TRUE,
   force = FALSE,
   echo = wait,
-  copy_external = FALSE
+  copy_external = FALSE,
+  readvars = TRUE
 )}\if{html}{\out{</div>}}
 }
 
@@ -547,6 +551,9 @@ job$run(echo = FALSE)
 
 # copy external files used in the model to simulation output directory
 job$run(copy_external = TRUE)
+
+# run simulation without generating CSV files from ESO output
+job$run(epw, dir = tempdir(), readvars = FALSE)
 }
 
 }
diff --git a/man/Idf.Rd b/man/Idf.Rd
index a8bd9ba91..e7aef947a 100644
--- a/man/Idf.Rd
+++ b/man/Idf.Rd
@@ -794,6 +794,9 @@ idf$run(epw, dir = tempdir(), wait = FALSE)
 # copy all external files into the directory run simulation
 idf$run(epw, dir = tempdir(), copy_external = TRUE)
 
+# run simulation without generating CSV files from ESO output
+idf$run(epw, dir = tempdir(), readvars = FALSE)
+
 # check for simulation errors
 job$errors()
 
@@ -4002,7 +4005,8 @@ Run simulation using EnergyPlus
   wait = TRUE,
   force = FALSE,
   copy_external = FALSE,
-  echo = wait
+  echo = wait,
+  readvars = TRUE
 )}\if{html}{\out{</div>}}
 }
 
@@ -4036,6 +4040,12 @@ will have all files needed for the model to run. Default is
 \item{\code{echo}}{Only applicable when \code{wait} is \code{TRUE}. Whether to show
 standard output and error from EnergyPlus. Default: same as
 \code{wait}.}
+
+\item{\code{readvars}}{If \code{TRUE}, the \code{ReadVarESO} post-processor will run
+to generate CSV files from the ESO output. Since those CSV
+files are never used when extracting simulation data in eplusr,
+setting it to \code{FALSE} can speed up the simulation if there are
+hundreds of output variables or meters. Default: \code{TRUE}.}
 }
 \if{html}{\out{</div>}}
 }
@@ -4092,6 +4102,9 @@ idf$run(epw, dir = tempdir(), wait = FALSE)
 # copy all external files into the directory run simulation
 idf$run(epw, dir = tempdir(), copy_external = TRUE)
 
+# run simulation without generating CSV files from ESO output
+idf$run(epw, dir = tempdir(), readvars = FALSE)
+
 # check for simulation errors
 job$errors()