is a list of freeware that provides information and tools for managing carbon and conserving energy. Before you access any software or apps, please read our disclaimer and
permissions page if you haven't already done so.
Acid Rain Program Forms
By US Environmental Protection Agency, Acid Rain Program. Forms required under the US EPA's Acid Rain Program, including those required for the Allowance System, Permitting, Monitoring, the Opt-In Program, Annual Reconciliation, the Allowance Auction, and Conservation and Renewable Energy Reserve. The forms are in PDF and WordPerfect formats.
CAIT Climate Data Explorer
By World Resources Institute. Provides access to comparable greenhouse gas emissions data sets, as well as other climate-relevant indicators, to enable analysis on a wide range of climate-related data questions in climate change policymaking.
Carbon Footprint Calculator
By Carbon Footprint Ltd. Calculates your carbon footprint for your home and transportation. A carbon footprint is a measure of the impact our activities have on the environment, and in particular climate change. Also includes ways to purchase carbon offsets.
By The Outdoor Industry Association & European Outdoor Group. The Eco Index is an environmental assessment tool designed to advance sustainability practices within the outdoor industry. It provides companies throughout the supply chain a way to benchmark and measure their environmental footprint, allowing them to identify areas for improvement and make informed sourcing and product life cycle decisions.
By Athena Sustainable Materials Institute. The EcoCalculator offers architects, engineers and others access to instant Life Cycle Assessment (LCA) results for hundreds of common building assemblies. Available in two versions: EcoCalculator for Commercial Assemblies and EcoCalculator for Residential Assemblies.
By US Environmental Protection Agency, Acid Rain Program. The Emissions & Generation Resource Integrated Database (eGRID) is a comprehensive inventory of environmental attributes of electric power systems. The preeminent source of air emissions data for the electric power sector, eGRID is based on available plant-specific data for all U.S. electricity generating plants that provide power to the electric grid and report data to the U.S. government. eGRID contains air emissions data for nitrogen oxides, sulfur dioxide, carbon dioxide, and mercury.
Energy Star Products
By US Environmental Protection Agency and US Department of Energy. Helps you make the most economical purchases for your facilities and home with a simple estimate of potential energy savings.
Energy Unit Converter
Environmental Impact Calculator App
By Siemens AG. This iPhone/iPad app allows you to estimate your building’s baseline carbon footprint from purchased electricity, natural gas, and heating oil. In addition, you can measure the impact of energy efficiency improvements on an annual basis or throughout the length of the project term.
Green Conference Initiative
By US Environmental Protection Agency, Office of Pollution Prevention and Toxics (OPPT). Opportunities for conference planners and suppliers (e.g., hoteliers, convention centers, and food service providers) that can help reduce pollution, energy use, and water use at a conference.
Green Gas Saver App
By TheAppleSeedStore.com. The Green Gas Saver is an iPhone App that trains you to drive more efficiently. Hard accelerations when driving translate to poor fuel economy. With two visual gauges, and audible warnings, the Green Gas Saver corrects your driving style.
Healthcare Energy Impact Calculator
By Practice Greenhealth
. Based on US EPA analysis of health impacts of power plant emissions of sulphur dioxide, nitrogen oxides and mercury, the Healthcare Energy Impact Calculator (EIC) estimates premature deaths, chronic bronchitis, asthma attacks, emergency room visits and more, by kilowatt hour per year. The EIC displays the projected number of incidents, estimates of medical treatment costs, their external societal costs, and the likely emissions permit costs for the green house gas carbon dioxide.
Heat Transmission Properties of Insulating and Building Materials
By National Institute of Standards and Technology. A reference for building designers, material manufacturers, and researchers in the thermal design of building components and equipment.
By Envirolytics. Perform your own quick or detailed energy analysis with no prior technical experience. Get heating, cooling, lighting, hot water and appliance energy consumption break downs with yearly cost and CO2 emission estimates. Upgrade and retrofit suggestions include yearly savings, economic projections, payback period and information about various energy saving alternatives. For iPhone.
Landfill Gas Emissions Model (LandGEM)
By US Environmental Protection Agency, Office of Air Quality Planning and Standards (OAQPS). Estimates emission rates for methane, carbon dioxide, nonmethane organic compounds, and individual toxic air pollutants from landfills. The program can also be used by landfill owners and operators to determine if a landfill is subject to the control requirements of the federal New Source Performance Standard (NSPS) for new municipal solid waste (MSW) landfills (40 CFR 60 Subpart WWW) or the emission guidelines for existing MSW landfills (40 CFR 60 Subpart Cc).
Light Bulb Finder
By Eco Hatchery, LLC. An app for iPhone and Android that makes it easy to switch from conventional light bulbs to energy-saving equivalents with the right fit, style and light quality. View bulb images, cost, savings, and environmental impact. Create shopping lists, and buy bulbs directly through the app or at local stores.
My Green Apps
By US Environmental Protection Agency. Find more than 100 apps that developers have made about the environment. You can sort the apps by topic or platform, or suggest an existing app you think EPA should add to the site.
One Stop Green Mobile App
By One Stop Green, LLC. This iPhone app allows you to conduct home and commercial energy audits right from your mobile phone! Receive daily green tips. Includes a solar, wind, water, and lighting calculator.
By Lawrence Berkeley National Laboratory. ProForm is a software tool designed to support a basic assessment of the environmental and financial impacts of renewable energy and energy efficiency projects. Given the necessary data, ProForm calculates basic financial indicators and avoided emissions of CO2 and local air pollutants expected from a project. Registration required.
RETScreen Renewable Energy Project Analysis Software
By CANMET Energy Diversification Research Laboratory (CEDRL) of Natural Resources Canada. With RETScreen, users are able to prepare a preliminary evaluation of the annual energy production, costs and financial viability of Renewable Energy Technology (RET) projects anywhere in the world. It includes RETScreen 4, an Excel-based clean energy project analysis software tool, and RETScreen Plus. RETScreen Plus is a Windows-based energy management software tool that allows project owners to easily verify the ongoing energy performance of their facilities.
Solar Panels Suitability Checker
By Solar Panels UK. This iPhone app will help you identify if your roof or other location is suitable for solar panel installation.
The UNEP Carbon Calculator
By United Nations Environment Programme. Users of this iPhone application can calculate their personal carbon footprint for journeys taken by air, train, or road. They will then be shown the equivalent area of a particular ecosystem (such as a tropical forest) that can absorb this amount of carbon dioxide.
U.S. Life-Cycle Inventory Database
By National Renewable Energy Laboratory (NREL). This database provides a cradle-to-grave accounting of the energy and material flows into and out of the environment that are associated with producing a material, component, or assembly. It's an online storeroom of data collected on commonly used materials, products, and processes.
Zerofootprint One Minute Calculator
By Zerofootprint. Enables individuals to get a quick measure of their carbon footprint or water use.
Zerofootprint Youth Calculator
By WGBH Educational Foundation. Provides a way for youth (ages 19 and younger) to both measure and reduce their carbon footprint as part of a global community of youth. Youth will be able to measure the impact they are having, as well as discuss the results and share strategies for reducing the carbon footprint of their families, schools, and communities.
Can't find what you need?