Reports

Commercial roof-top units in Minnesota: characteristics and energy performance
2017 | RTUs are used in more than one third of U.S. commercial buildings, the highest of any cooling equipment type. Why? They are reliable and have a low capital cost, as well as established service and distribution networks. There is anecdotal evidence,... more...
Manufactured homes study
2016 | The manufactured home market offers an affordable housing option—and sometimes the only option—for many would-be homeowners. Residents of manufactured homes (also known as mobile homes) are more likely to be low-income than residents of other single... more...
Energy efficiency opportunities for homes with high usage: market characterization and customer engagement strategies
2016 | We conducted an in-depth study of 100 high energy consumption homes in Minnesota. The goal was to help conservation program managers better understand the factors contributing to high usage, quantify the energy savings potential associated with... more...
Impacts of offfice plug load reduction strategies
2016 | Seventhwave, along with the Center for Energy and Environment and LHB, conducted a field research study to demonstrate and measure savings from potential plug load reduction strategies in office buildings. We also characterized the types of devices... more...
Find and flip: motivating high energy users to save energy
2015 | Prepared by Cool Choices and Seventhwave (formerly Energy Center of Wisconsin). more...
Energy savings from implementing and commissioning demand control ventilation
2015 | Demand control ventilation (DCV) systems use sensors—generally either CO2 or occupancy sensors—to estimate the actual number of people in an area and supply only as much ventilation air as is needed at a given time. DCV has the potential to save a... more...
Adjusting lighting levels in commercial buildings: energy savings from institutional tuning
2015 | Task tuning is one form of lighting control that can be used in commercial buildings to save energy. It involves dimming lights in a space so that the average illuminance at the working plane is appropriate for the type of use in that space. Task... more...
Performance of water-source variable refrigerant flow: measurement and verification of two installed systems
2015 | Variable Refrigerant Flow (VRF) systems have developed into a promising emerging technology. While popular in some places in the world, these systems are quite new to the upper Midwest. The systems are an innovative version of a simple split system... more...
Third-party distributed generation: issues and challenges for policymakers
2014 | more...
KEEP enrichment pilot: activity summary and results
2014 | This report describes our pilot efforts to test the infusion of more near-term energy savings efforts alongside KEEP’s energy education mission; presents the results of those efforts and makes suggestions for future activities. In order to... more...

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