The Energy+.ini file is read by the EnergyPlus.exe program
and is very important to the simulation run. In
specific, this file contains a pointer to where the
Energy+.idd file will be found. More description of the
Energy+.ini contents is contained in the Auxiliary Programs
document.
For the advanced user, there is also the “EPMacro” program,
described in the Auxiliary programs document. You run it as a
separate program before EnergyPlus (the batch file included in
the install and shown in the GettingStarted document contains
the commands). It is automatically run if you use the
EP-Launch program.
EnergyPlus may create several output files. Whether some
files are produced depends on the actual simulation (for
example, the .rdd file is only produced when you request a
Variable Dictionary using the Output:Report object).
Similarly, the .dxf file is only produced when a DXF surface
report is requested. Common output files are shown in the
following table. A complete, up to date list is shown in the
“Output Details and Examples Document”.
EnergyPlus Output Files
| FileName |
Description |
| Eplusout.audit |
Echo of input |
| Eplusout.err |
Error file |
| Eplusout.eso |
Standard Output File (contains
results from both Output:Variable and Output:Meter
objects). |
| Eplusout.eio |
One time output file |
| Eplusout.rdd |
Output variable Data
Dictionary |
| Eplusout.dxf |
DXF (from
Output:Report,Surfaces,DXF;) |
| Eplusout.mtr |
Similar to .eso but only has
Meter outputs. |
| Eplusout.mtd |
Meter details report – what
variables are on what meters and vice versa. |
| Eplusout.end |
A one line summary of success or
failure (useful for Interface programs) |
| Eplusout.dbg |
From Debug Output object – may
be useful to support to help track down problems |
| Eplusout. < ext > |
Not directly from EnergyPlus –
produced by utility programs that read the .eso file and
produce output files for spreadsheet programs |
| Eplusout.sln |
Similar to DXF output but less
“formatted”. Results of Report Surface, Lines object. |
| Epluszsz. < ext > |
Results from the Zone Sizing
object with extension noted by the Sizing Style object. This
file is “spreadsheet” ready. |
| Eplusssz. < ext > |
Results from the System Sizing
object with extension noted by the Sizing Style object. This
file is “spreadsheet” ready. |
| Eplusout.bnd |
This file contains details about
the nodes and branches. Useful in determining if all your
nodes are connected correctly. |
| Eplustbl. < ext > |
Results from various “Report
Table” and a few other reporting commands. The extension is
from the “style” command and this file is “spreadsheet”
ready. |
Energy+.ini[LINK]
The Energy+.ini file is read by the EnergyPlus.exe program and is very important to the simulation run. In specific, this file contains a pointer to where the Energy+.idd file will be found. More description of the Energy+.ini contents is contained in the Auxiliary Programs document.
For the advanced user, there is also the “EPMacro” program, described in the Auxiliary programs document. You run it as a separate program before EnergyPlus (the batch file included in the install and shown in the GettingStarted document contains the commands). It is automatically run if you use the EP-Launch program.
EnergyPlus may create several output files. Whether some files are produced depends on the actual simulation (for example, the .rdd file is only produced when you request a Variable Dictionary using the Output:Report object). Similarly, the .dxf file is only produced when a DXF surface report is requested. Common output files are shown in the following table. A complete, up to date list is shown in the “Output Details and Examples Document”.
Documentation content copyright © 1996-2026 The Board of Trustees of the University of Illinois and the Regents of the University of California through the Ernest Orlando Lawrence Berkeley National Laboratory. All rights reserved. EnergyPlus is a trademark of the US Department of Energy.
This documentation is made available under the EnergyPlus Open Source License v1.0.