Abstract: This report describes the computer simulation code SOLSTOR. The code simulates energy systems in which electricity is generated by either a photovoltaic (PV) system or a wind turbine generator (WTG). Storage may or may not be present. Backup electricity, if needed, is provided either from a utility grid or from a fuel-burning generator. SOLSTOR minimizes the life cycle cost of providing energy by choosing the optimal solar or wind system component sizes. Rates for electricity purchased from the grid can include time-of-day (TOD) energy charges as well as time-of-day peak demand changes. Sell-back to the grid of excess collected energy is also considered.

From introduction: This report describes the objectives, scope, design, drilling and hydrologic history, and the test results collected during permeability testing of sub-horizontal boreholes drilled in the waste-handling shaft (WHS) at the Waste Pilot Plant (WIPP) site located in southeastern New Mexico.

From summary: The purpose of the study is to develop information that will contribute to the definition of the potential role of photovoltaics in meeting future energy demands in agriculture.

From introduction: The objectives of the technical effort are to identify and characterize agricultural energy demands that can effectively use P/V power systems and to determine performance and cost-estimates for the designs.

Forward: The Final Report summarizes the findings and project work in conjunction with the "Photovoltaic" Applications Definition and Photovoltaic System Definition Study in the Agricultural Sector" under Contract Number 07-6951.

From abstract: This is a study of feasible low-cost structures for solar photovoltaic central power plants. The test program is a limited effort to advance the state of the art and further work is recommended.

From abstract: Photovoltaic modules and arrays are tested in the PASTF, along with power conditioning units and energy storage equipment related to photovoltaic systems.

From abstract: This report is a technical and economic evaluation of five representative cell laydown techniques with the final goal being a determination of which was most promising from a cost performance basis.

From summary: The purpose of this analysis is to provide photovoltaic (P/V) system design and field engineers with an understanding of the primary factors which can cause individual P/V cells in a module or an array to be forced into reverse bias and eventual failure and to provide guidelines for the adequate protection of the cells.

From background: The solar system design described in this report is for a residential two story house located in the Northeast region of the country typified by the Boston/Madison weather environment. A side-by-side photovoltaic/thermal system design was developed for the application.

A control system has been developed that uses a carrier signal imposed on an existing ac power circuit to transmit commands. This system was specifically developed to control an entire solar collector field by sending sun-tracking information to the trough collectors or by commanding them to assume safe positions (STOW) if out-of-limit conditions were encountered. Objectives were to develop a control system that operates reliably and has enough functions to control an entire collector field, yet do it at less cost than for conventional approaches. Development, design, operating characteristics, and field testing and results of the new system, the Power Cable Carrier Control (PC³) System are described.

From abstract: Drillhole DOE-2 was drilled to investigate a structural depression marked by the downward displacement of stratigraphic markers in the Salado Formation ~ 2 mi north of the center of the WIPP site. This depression was named informally after the shallow borehole FC-92 in which the structure was described. The presence of the depression was confirmed by drilling.

From abstract: This report presents a preliminary evaluation of design concepts for the eventual sealing of the shafts, drifts, and boreholes at the Waste Isolation Pilot Plant Facility. The purpose of the seal systems is to limit the flow of water into, through, and out of the repository.

From introduction: This report describes a stratigraphic core hole known as ERDA No. 9 drilled at the approximate center of the WIPP site.