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Case Studies
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
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States, localities, and private sector groups have implemented many innovative technologies, programs, and policies, and have demonstrated the feasibility and cost-effectiveness of a variety of methods to reduce greenhouse gas emissions.
Each case study features a description of the project and, where available, quantitative results in terms of greenhouse gas emissions reductions, energy savings and costs. It also identifies the main actors involved in managing and implementing the project and provides contacts for obtaining additional information.
The case studies listed below illustrate the experience states, localities and private sector groups are accumulating as they implement policies that reduce greenhouse gas emissions and represent a cross-section of the broad range of approaches that can be used.
- City-wide Energy Management (Arizona) (PDF, 1 pp., 68 KB, About PDF)
- Commercial Energy Efficiency Improvements (California) (PDF, 1 pp., 67 KB, About PDF)
- Energy Efficient Building Design (Utah) (PDF, 1 pp., 103 KB, About PDF)
- LED Traffic Signals (Colorado) (PDF, 1 pp., 57 KB, About PDF)
- CO2 Emission Standards for New Energy Facilities (Oregon) (PDF, 2 pp., 80 KB, About PDF)
- Energy Codes for Buildings (Hawaii) (PDF, 1 pp., 54 KB, About PDF)
- Madison Area Sustainable Lifestyle Campaign (Wisconsin) (PDF, 1 pp., 52 KB, About PDF)
- Living Memorial Tree Planting Program (Indiana) (PDF, 1 pp., 65 KB, About PDF)
- Alternative Tillage Systems for Energy Conservation (Iowa) (PDF, 1 pp., 250 KB, About PDF)
- Incentives to Increase Purchase and Generation of Renewable Energy (California) (PDF, 1 pp., 32 KB, About PDF)
- Reducing Nitrogen Fertilizer Use (Iowa) (PDF, 2 pp., 105 KB, About PDF)
- Residential Energy Efficiency Program for Low-Income Multifamily Housing (Vermont) (PDF, 1 pp., 123 KB, About PDF)
- Safe School Bus Clean Fuels Demonstration Project (California) (PDF, 1 pp., 72 KB, About PDF)
- Using Geothermal Energy to Provide Heat and Hot Water (Idaho) (PDF, 1 pp., 62 KB, About PDF)
- Using Technology to Conserve Both Energy and Water (California) (PDF, 1 pp., 232 KB, About PDF)
- Using Wind Turbines to Reduce Electricity Consumption (North Dakota) (PDF, 1 pp., 41 KB, About PDF)
- WindSource: A Green Pricing Program for Marketing Wind Power (Colorado) (PDF, 1 pp., 30 KB, About PDF)
- Climate Change Solutions - Vermont Trims Energy Bills for Low Income Families (PDF, 4 pp., 261 KB, About PDF)