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This study aims to provide a new method for precisely sizing photovoltaic (PV) arrays for standalone, direct pumping PV Water Pumping (PVWP) systems for irrigation purposes.

The method uses historical weather data and considers daily variability in regional temperatures and rainfall, crop evapotranspiration rates and seasonality effects, all within a nonparametric bootstrapping approach to synthetically generate daily rainfall and crop irrigation needs. These needs define the required daily supply of pumped water to achieve a user-specified level of reliability, which provides the input to an intuitive approach for PV array sizing. An economic comparison of the costs for the PVWP versus a comparably powered diesel generator system is provided.

Pumping 22.8646 m³/day of water would meet the pasture crop irrigation needs on a one-acre (4046.78 m²) tract of land in South Florida, with 99.9% reliability. Given the specified assumptions, an 8.4834 m² PV array, having a peak power of 1.1877 (kW), could provide the 1.2347 (kWh/day) of hydraulic energy needed to supply this volume over a total head of 20 meters. The PVWP system is the low-cost option when diesel prices are above $0.90/liter and total installed PV array costs are fixed at $2.00/Watt peak power or total installed PV array costs are below $1.50/Watt peak power and diesel prices are fixed at $0.65/liter.

Because the approach is not dependent on the shapes of the sampling distributions for regional climate factors and can be adapted to consider different types of crops, it is highly portable and applicable for precisely determining array sizes for standalone, direct pumping PVWP systems for irrigating diverse crop types in diverse regions.

The purpose of this paper is to provide a solution that helps reduce confusion about choice and usage of tools for strategy-making.

The approach is to present a classroom-tested system that integrates new methods for applying a parsimonious set of six widely used tools, within one, comprehensive, yet succinct, procedure for strategy-making.

Findings, based on years of development and use of the procedure as the basis for teaching MBA capstone courses in strategy, reveal that it facilitates rapid mastery of the underlying theory and practical application of the essential tools of strategy-making.

Practical implications include decreased tendencies for ad hoc or disjointed use of random sets of tools for strategy-making and increased capabilities to connect strategy-making and strategy-executing in an iterative process, as previous iterations of strategies that were executed by organizations are used to determine new strategies.

Characteristics of the procedure which are original include: merging outside-in and inside-out perspectives on strategy-making in one, succinct procedure; providing an approach with general applicability to diverse types of organizations; providing a systematic process for identifying and rating environmental characteristics, using shared, theory-based scales, applied to fully-cited, real-world data, thereby reducing reliance on unsubstantiated opinion, providing full traceability, and facilitating knowledge transfer across users and time; and linking strategy analysis to formulation. The procedure described in this article has value for professors, students, managers, consultants, and the broad spectrum of people throughout organizations who are engaged in strategy-making.

This study aims to provide and illustrate the application of a framework for conducting techno-economic analyses (TEA) of early-stage designs for net-zero water and energy, single-family homes that meet affordable housing criteria in diverse locations.

The framework is developed and applied in a case example of a TEA of four designs for achieving net zero-water and energy in an affordable home in Saint Lucie County, Florida.

Homes built and sold at current market prices, using combinations of well versus rainwater harvesting (RWH) systems and grid-tied versus hybrid solar photovoltaic (PV) systems, can meet affordable housing criteria for moderate-income families, when 30-year fixed-rate mortgages are at 2%–3%. As rates rise to 6%, unless battery costs drop by 40% and 60%, respectively, homes using hybrid solar PV systems combined with well versus RWH systems cease to meet affordable housing criteria. For studied water and electricity usage and 6% interest rates, only well and grid-tied solar PV systems provide water and electricity at costs below current public supply prices.

This article provides a highly adaptable framework for conducting TEAs in diverse locations for designs of individual net-zero water and energy affordable homes and whole subdivisions of such homes. The framework includes a new technique for sizing storage tanks for residential RWH systems and provides a foundation for future research at the intersection of affordable housing development and residential net-zero water and energy systems design.