Filter for: passive active residential commercial wind files
AAMASKY Skylights and Daylighting (Fee-based)
Heating, cooling, and lighting energy consumption attributable to skylights in commercial buildings
Adeline
Analyze daylighting and lighting in commercial buildings
AGI32
Software for design and renderings for electric and daylighting analysis
AGi32 Lighting Design Software (fee-based)
Lighting analysis software
ApacheLoads (fee-based) (UK)
Performs heat loss and heat gain design calculations
APOS Photovoltaic StatLab
Analysis and the quality assessment of photovoltaic (PV) modules
ArchiPhysics Daylight Software (Free)
Shows how daylight will be distributed in a room
ArchiPhysics Passive Solar Software (Free)
See how different variables affect the indoor temp
ArchiPhysics-Daylight
How daylight is distributed in a room
Awnshade
Window shading design and analysis software
Build It Solar
This website provides a selection of analysis tools and data for solar design
Building Energy Software Tools Directory
Alphabetical list of tools
CASAnova 3.3 (free download)
Software for heating and cooling energy demand in buildings
Chhaya 2.0
Optimize glazing size and orientation, shading and natural ventilation
Climate Consultant
Energy Design Tool
CoDePro -- Flat Plate Collector Design Program
University of Wisconsin Madison
Collector Efficiency Calculator
from Build It Solar
COMFEN 2.1 beta
Alternative fenestration systems for project-specific commercial building applications
Commercial Water Calculator
Water use in commerical buildings
Data Plotting Program
Chart data gathered from monitoring stations
Degree Day Charts - Free
from Weather Data Depot
Degree Days Calculator for IPM (California)
You can run preset models
Degree Days Charts (Global)
Weather data for energy professioanls
Design Advisor MIT (USA)
Daylighting, natural ventilation, energy and comfort.
Design Builder Software (fee-based)
Building energy, CO2, lighting and comfort performance
DOE-2
Calculates the hourly energy use and energy cost
E-Quest Energy Simulation Tool
Building energy use analysis tool
E-Scale or EnergySmart Home ScaleSM
Home energy rating tool from USDOE
Eco-Specifier (FEE-Based)
Database of 3500 eco-products, eco-materials, technologies and resources
EcoCalculator for Buildings from the Athena Instit
Evaluate buildings & assemblies using life cycle assessment (LCA) methodology
EcoTect Design Tools (Fee-based)
from Autodesk
Electric Load Estimate Worksheet
Worksheet to calculate load
Emissivity of Materials Chart
Paints, coatings, metals, masonry, etc.
Energy CAP (Fee-Based)
Utility bill tracking software
Energy Gauge
Energy and Economic Analysis Software for Commercial and Residential
Energy Modeling Software Tools Directory (USA)
Directory of building energy and water use computer modeling tools with links
Energy Plus Energy Simulation Software
Free downloadable tool
Energy Star Home Energy Yardstick (USA)
Compare a home's energy efficiency to similar homes
Energy-10 Energy Simulation Software (fee-based)
Analyzes and illustrates a building's energy and cost savings
Environmental Impact Estimator for Buildings from Athena
Evaluates buildings & assemblies using life cycle assessment (LCA) methodology
Free Energy Modeling Software
Google SketchUp
Fuel Comparison Calculator
from Build It Solar
Green Flight Carbon Offset Calculator (Australia)
Offset travel via airplane
Greenius (German - free download)
Renewable energy evaluation
H2O Conserve Calculator
How much you use and how to conserve water, not just at home
Heat Gain and Loss Short Form Calculator
Quick residential calculator for MrHVAC
HEED Free Software (USA)
Home Energy Efficient Design
Home Energy Efficient Design (HEED)
Free downloadable tool
Home Energy Saver
Do-It-Yourself Energy Audit Tool
Home Energy Saver (USA)
Do It Yourself Home Energy Audit
Home Heat Loss Calculator (USA)
Estimate of the heat loss for your home
HOMER (free registration)
Off-grid and grid-tie simulation software
Horizon (fee-based - Germany)
Das HorizON Prinzip
How Many Solar Panels Do You Need Calculator?
Calculate how many solar panels you need
In My Backyard (USA)
Estimates electricity you can produce with PVs at your site
INsel (fee-based)
Graphical programming language for simulation of renewable energy systems
Landscape Calculators
Amount of mulch, plants, stone or lawn
LESO ACOUSALLE (Fee-based)
Planning and Analysis of Acoustics of Indoor Spaces
LESO-Cool (fee-based)
Cooling through Natural Ventilation and Thermal Movements
LESO-Daylighting (Fee-based)
Daylighting design software
Lighting Pay-Off Calculator
Incandescents vs fluoresecents
Louver Shading Tool
from Sustainable by Design
Measurement and Instrumentation Data Center (USA)
Irradiance and Meteorological Data
MeteoNorm (fee-based Global)
Meteorological database for solar energy
Michigan Wind Prospecting Tool (USA)
Best areas in Michigan for utility scale wind farm development and community wind development
NASA World Wind Tool
World Wind SDK for Java
National Climatic Data Center (USA)
World's largest active archive of weather data
National Green Values™ Calculator
Compare low impact development to conventional stormwater partices
Off-Grid Energy System Size Calculator
Calculate size of your home power system
Online Wind Calculator (Maryland, USA)
Figure out wind resources for your site in maryland
Panel Shading Visualization Tool
Shading of parallel rows of flat solar collector panels
Parasol (Sweden)
Energy simulation tool for comparison of energy demand
PGE Smart Energy Analyzer
Analyze a home's energy consumption (PGE customers)
Photovoltaic Power Model Software
Free software to evaluate for photovoltaics
Photovoltaic: PV CoSim+
PV cost simulation software
Pilkington Sun Angle Calculator
Determining solar geometry variables for architectural design
Planning Tree Windbreaks (Missouri, USA)
Using windbreaks fro energy efficiency
Psychrometric Chart from Trane
Downloadable
Psychrometrics Calculator for Air Properties
from Trane
Psychrometrics Calculator for Mixed Air Properties
from Trane
PV F-Chart Software (fee-based)
PV system design and analysis
PV Professional (German/Italian - fee-based)
PV planning for flat or sloped roofs
PV WATTS Calculator v 1.0
calculates electrical energy produced by a grid-connected photovoltaic (PV) system
PV WATTs Version 2
Estimates performance data for any location in the United States
PV-Sol Software for Photovoltaics (fee-based)
Simulation for design and calcs of grid-connected systems
PVCad Design Software for PV Facades
Computer tool for fast and efficient planning of PV facades
PVGIS Estimation Utility (Europe)
Estimate solar electricity generated in European city or country
PVsyst (fee-based)
Photovoltaic system analysis
R-Values Table for Materials
Average R-value for many building materials
Rain Xchange Rainwater Design Calculator (USA)
Rainwater Collection Calculator
Rainwater Collection System Sizing
Determine catchment area and water use demand
Rainwater Harvesting Calculator (Seattle WA)
Calculate your size requirements for Seattle rainfall
Rainwater Harvesting Calculator (UK)
Calculate your rainwater collection system size
Rainwater Harvesting Calculator for Texas, New Mexico, Arizona
Online calculator for catchment area, storage and landscape use
RESFEN 5.0
Windows and Daylighting Software
RETScreen Clean Energy Analysis Software
Evaluate energy production for various types of renewable energy
ROI Analysis for SOLR Roofing Panels (FREE)
Detailed look at costs and benefits for SOLR panels
Roof Ray Solar Potential Calculator
Calculate your roof's solar potential
Shadow Analyzer (fee-based)
Analyzes shadow effects of solar equipment or nearby objects
Shadows (free for basic level)
Software to design sundials and astrolabes
Sizing Solar Pool Heaters (Florida, USA)
Simple method to determine solar collector area
Sizing Solar Water Heater Tool (Florida, USA)
Residential solar hot water systems
SketchUp (Free)
Create 3-d models using GoogleEarth.
SkyCalc Software Tool for Skylighting
Determine the optimum skylighting strategy
Small Wind Toolbox
Installation, operation, approval, markets, zoning, etc.
SMARTS - Simple Model of the Atmospheric Radiative Transfer of Sunshine
Predicts clear-sky spectral irradiances
Sol Path Sun Path Calculator
from Sustainable by Design
SolaCalc (UK)
Passive solar design performance simulation
Solar Air Heater Software and Data
Evaluate energy production for solar air heating projects
Solar Analysis Widget (USA)
Online tool to see your solar power potential
Solar Array Size Calculator
Calculate solar array size from SRoeCo
Solar Battery Bank Designer
Design tool to show how to wire battery bank
Solar Calculator (USA)
Estimate size and cost of solar power system in USA
Solar Calculator (USA)
Calculate amount of electricity from sun
Solar Collector Design Program
Compute efficiency of your own solar collector design
Solar Cost Calculator
Calculate your solar costs from SRoeCo
Solar Design Tool for Grid-Tie Systems
Design and configure optimal solar power systems
Solar Energy Electric Power System Simulator
Demonstrate the basic operation of a solar electric power system
Solar Energy System Sizing Estimator
How many Solar Panels you will need to generate electricity?
Solar Estimator (USA)
Estimates size and calculates the cost of solar system
Solar Noon Calculator Printable (Global)
Find the exact time of solar noon for your location
Solar Panel Shading Calculator
from Sustainable by Design
Solar Pathfinder-Solar Site Analysis (Fee)
On-site accurate measurement of shading of any site
Solar Position Calculator
Solar zenith angle, declination, equation of time, etc.
Solar Position Calculator by NOAA (Global)
Find sunrise, sunset, solar noon for anyplace on earth
Solar Power Calculator (USA)
Estimate the cost and size of a solar energy project
Solar Power Forecasting (fee-based)
Focuses on short-term markets
Solar Power Rating Map (USA)
Estimates net cost for a solar power system for each state
Solar Radiation Data Manual for Buildings
Free, downloadable data tables for calculating sol
Solar Radiation Data Manual for Buildings (USA)
for a horizontal window and four vertical windows
Solar Radiation Data Manual Online (USA)
for Flat-Plate and Concentrating Collectors
Solar ROI Calculator
A return on investment calculator for roof panels
Solar Savings Calculator for Residential (USA)
Calculate savings for using the REnu solar rental
Solar Site Survey (USA)
One-page solar resources map fro US
Solar Sizer
Solar system sizing tool
Solar Water Heater Calculator
Explore the energy usage of your water heater
Solar Water Heater Software
Evaluation tool for solar water heating global
Solar Water Heating Calculator
explore the energy usage of your water heater
SolArch (UK)
Soalr Architecture Design Tool
SOLinvest Pro (German - fee-based)
Economic analysis of renewable energy systems
SOLinvest Standard (German - fee-based)
Basic economic analysis of renewable energy systems
SolPath Tool
graphical representation of the sun's apparent path
Sombrero 3.01 (Germany)
Solar shading, radiation, systems and building geometry
SPOT Sensor Placement Optimization Tool
spreadsheet-based tool for specific photosensor manufacturers
SRoeCo Solar
Solar panel comparisons, costs, array size calculators
String Sizing Program for Photovoltaics
Approximate PV module string sizes
Sun Angle Tool
Calculates solar angle data
Sun Eye (fee-based)
Accurately measure solar access and shading
Sun Path Chart Program
Sun path charts in Cartesian coordinates
Sun Position Calculator
Calculates an array of solar angle data
Sun Position Tool
Calculates an array of solar angle data
SunAngle Calculator
Solar angles based on location, date, and time
SunAngle Professional Suite
Sophisticated version of SunAngle
Sundi (Germany)
Simulation program for irradiance calcs and shading analysis
Sundial
Make a Paper Sundial
Sundial Registry
Photos, locations and descriptions of sundials all over the world
Sundial.net
Online web resource for sundials
SunPower Estimator (USA)
Calculates 25-year savings from solar electricity
SUNREL
Energy simulation software
Sunrise/Sunset Calculator (USA)
for any location and any date
Sustainability Toolkit (Free, Online)
Developed by US Air Force with many strategies
Sustainable By Design
Design tools online for solar
Sustainable Measures (North America)
T-Sol Professional (fee-based)
Simulation for design of solar thermal systems
Terra Org Carbon Calculator (Spanish)
de emisiones de carbono emitidas a la atmósfera
Therm
Model two-dimensional heat-transfer effects in building components
Trane TRACE 700 (fee-based)
Optimize the design of building’s HVAC based on energy utilization & LCA
Transit Benefit Calculator (USA)
Measure the benefits of transit investments for communities
TRNSYS
Transient systems simulation program
Vertical Fin Shading Tool
calculate the shading provided by vertical fins
Video Conferencing Calculator
Travel meeting versus video conferencing
Virtual Wind Tool (fee-based)
3D wind flow modeling and visualization
Voltage Drop Calculator Tool
approximate voltage rise in the AC circuit
Water Budgets Water Use Calculator
How much water does your home use?
Water Calculator (UK)
What's your water use per day?
Water Consumption Calculator
Where and how much water do you use?
Water Footprint Extended Calculator
How much water do you use based on the products you consume?
Water Meter Calculator (UK)
Calculate your savings from installing a water meter
Water Neutral Offset Calculator
Travel to South Africa in a water-neutral way
Water Usage Calculator (Thames, UK)
Calculate your home water use
Water Usage Calculator for Cooling Towers
Calculate water useage for cool towers
Water Use Calculator
Find your water use patterns at home
Water Use Calculator (Australia)
Home water use calculator for Australia
Water Use Calculator Commercial Buildings
Estimate your building's water usage
Water Use Calculator Fair Oaks
Find out your water use at home
Water Use Calculator SWFMD
Find how much water you use at home
Wind Energy Finance Calculator (USA)
Wind Estimator (USA)
Estimates size and calculates the cost of wind system
Wind Power Prediction Tool (fee-based)
Generate short-term predictions of wind power production
Wind Project Calculator (USA)
Cash flow modeling for community wind projects
Wind Propespecting Tools (Fee-based)
Calculate wind potential at your site
Wind Turbine Software
Evaluate wind power
Wind Yield Estimation Tool (UK)
Estimate the local annual mean wind speed
WindCast Forecasting Tool
Current wind speed and direction for the most recent hour
Window 5.2
Calculate total window thermal performance
Window Heat Gain Calculator
Calculates the solar heat gain through vertical windows in temperate
Window Overhang Analysis Tool
Visualize the degree to which a horizontal overhang shades a window
Window Overhang Design Tool
Visual feedback about the performance of a horizontal window overhang
Wire Size Calculator
Proper sizing of wires for solar panel-to-battery