Josh Novacheck

Josh Novacheck
National Renewable Energy Laboratory | NREL · Strategic Energy Analysis Center

About

15
Publications
1,217
Reads
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213
Citations
Citations since 2016
9 Research Items
201 Citations
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2016201720182019202020212022010203040
2016201720182019202020212022010203040

Publications

Publications (15)
Article
Electricity systems around the world are decarbonizing, driven by reductions in the cost of renewable energy and encouraged by supportive regulatory policy. Electricity market designs are increasingly being tested to ensure that the bulk power system can deliver reliable, cost-effective energy to all consumers.
Article
The Interconnections Seam Study examines the potential economic value of increasing electricity transfer between the Eastern and Western Interconnections using high-voltage direct-current (HVDC) transmission and cost-optimizing both generation and transmission resources across the United States, proposing, assessing, justifying, and illustrating a...
Article
Grid integration studies are key to understanding our ability to integrate variable generation resources into the power system and evaluating the associated costs and benefits. In these studies, it is important to understand the flexibility of the thermal power fleet, including how thermal plants operate at part load. Without a comprehensive unders...
Article
While contiguous power systems are often operated by several regional system operators, optimization models have traditionally been designed to generate optimal system-wide scheduling decisions. This research presents an approach to reflect the existence of multiple system operators making scheduling decisions within an interconnected power system....
Article
Although Florida has very little photovoltaic (PV) generation to date, it is reasonable to expect significant deployment in the 2020s under a variety of future policy and cost scenarios. To understand these potential futures, we model Florida Reliability Coordinating Council operations in 2026 over a wide range of PV penetrations with various combi...
Article
One method to reduce wind variability is to diversify the wind power resource by interconnecting wind resources across a larger geography. This study uses a modified version of mean-variance portfolio optimization (MVP) to assess the potential for diverse wind to reduce the variability of wind. A one year unit commitment and economic dispatch model...
Conference Paper
Full-text available
The Eastern Renewable Generation Integration Study (ERGIS), explores the operational impacts of the widespread adoption of wind and solar photovoltaic (PV) resources in the U.S. Eastern Interconnection and Québec Interconnection (collectively, EI). In order to understand some of the economic and reliability challenges of managing hundreds of gigawa...
Article
Many state-level Renewable Portfolio Standards (RPS) include preferences for solar generation, with goals of increasing the generation diversity, reducing solar costs, and encouraging local solar industries. Depending on their policy design, these preferences can impact the RPS program costs and emissions reduction. This study evaluates the impact...
Article
An examination of the environmental benefits of an expanded RPS in Michigan find that, with higher coal retirements, significantly more natural gas is displaced by the expanded RPS, thereby reducing the emissions mitigation potential. This illustrates how the environmental benefits of renewable energy are dependent on the system into which it is in...
Article
In the United States, state-level Renewable Portfolio Standards (RPS) have served as key drivers for the development of new renewable energy. This research presents a method to evaluate emissions reductions and costs attributable to new or expanded RPS programs by integrating a comprehensive economic dispatch model and a renewable project selection...
Article
This thesis is organized into two chapters, which will be submitted separately for publication. The abstracts for each chapter are given below. Chapter 1: Many state-level Renewable Portfolio Standards (RPS) include preferences for solar generation, with goals of increasing the diversity of new renewable generation, driving down solar costs, and en...
Article
This paper presents results from whole building air leakage tests used to document the leakage reduction due to envelope sealing and assess the accuracy of contractor’s estimates of the impact of their sealing. The measurements also compare the differences in envelope leakage reductions determined from depressurization versus pressurization tests a...
Article
Full-text available
Introduction: Secondhand smoke (SHS) exposure continues to be a problem in bars and restaurants where smoking is permitted. This study measures the relative SHS exposure reduction in nonsmoking sections of establishments that allow some smoking. Methods: Measurements were conducted simultaneously in the smoking and nonsmoking sections of 14 Minn...

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