New Release Books by Caleb Johnson

Caleb Johnson is the author of Light Green (2021), The Plymouth Colony, Year One - 1620 (2020), Treeborne (2018), Here Shall I Die Ashore (2007) and other 3 books.

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Light Green

release date: May 26, 2021
Light Green
Light Green seems to be your everyday 14 year old teenager who happens to excel at sports. Well, when his best friend Fred turns out to be anything but normal his life is literally flipped upside down. All of Light''s life he has yearned to know about his birth parents, yet nobody on earth could tell him about them. Soon, he finds out his parents were not normal humans after all. No, they are Ninjas from a whole other world called Crendle. After hearing the news he had to meet them! But, apparently they are being held captive by an evil Ninja Warlord known as Shang. The most feared Ninja in all of Crendle. Now Light must venture to this other world to retrieve four pieces of a portal that can take him to where his parents are being held. The only problem is those 4 pieces known as the Cyber Sticks are some of the most heavily guarded things in Crendle. There''s no way they''re gonna give them away freely.

The Plymouth Colony, Year One - 1620

release date: Jun 17, 2020
The Plymouth Colony, Year One - 1620
A vivid portrait of the trials and tribulations of a new American community, this collection of original documents and firsthand accounts is presented in commemoration of the 400th anniversary of the arrival of the Mayflower in the New World. The chronological entries trace the expedition''s planning and launch, its voyage across the Atlantic, the founding of the Pilgrims'' settlement, and the events surrounding the first Thanksgiving. Brief Introductions place each item in context.

Treeborne

release date: Jun 05, 2018
Treeborne
"I can’t remember the last time I read a book I wish so much I’d written. Treeborne is beautiful, and mythic in ways I would never have been able to imagine...I can’t say enough about this book."—Daniel Wallace, national bestselling author of Extraordinary Adventures and Big Fish: A Novel of Mythic Proportions An Honorable Mention for the Southern Book Prize One of Southern Living''s "Best New Books Coming Out Summer 2018" and one of Library Journal''s "Books to Get Now" Janie Treeborne lives on an orchard at the edge of Elberta, Alabama, and in time, she has become its keeper. A place where conquistadors once walked, and where the peaches they left behind now grow, Elberta has seen fierce battles, violent storms, and frantic change—and when the town is once again threatened from without, Janie realizes it won’t withstand much more. So she tells the story of its people: of Hugh, her granddaddy, determined to preserve Elberta’s legacy at any cost; of his wife, Maybelle, the postmaster, whose sudden death throws the town into chaos; of her lover, Lee Malone, a black orchardist harvesting from a land where he is less than welcome; of the time when Janie kidnapped her own Hollywood-obsessed aunt and tore the wrong people apart. As the world closes in on Elberta, Caleb Johnson’s debut novel lifts the veil and offers one last glimpse. Treeborne is a celebration and a reminder: of how the past gets mixed up in thoughts of the future; of how home is a story as much as a place.

Here Shall I Die Ashore

release date: Nov 20, 2007
Here Shall I Die Ashore
In the spring of 1621, Plymouth Colony sent STEPHEN HOPKINS to make the first visit to Wampanoag sachem Massasoit to present a red horsemans coat as a gift and sign of friendship. For most ordinary Englishmen, venturing off into the depths of unexplored America would have been a once in a lifetime adventure: but not for Stephen. By the time he turned forty, he had already survived a hurricane, been shipwrecked in the Bermuda Triangle, been written into a Shakespearean play, witnessed the famine and abandonment of Jamestown Colony, and participated in the marriage of Pocahontas. He was once even sentenced to death! He got himself and his family onto the Pilgrims Mayflower, and helped found Plymouth Colony. He signed the Mayflower Compact, lodged the famous Squanto in his house, participated in the legendary Thanksgiving, and helped guide and govern the early colonists. Yet Stephen was just an ordinary man, with a wife, three sons, seven daughters, a small house, some farmland for his corn, and cows named Motley, Sympkins, Curled, and Red. These are the extraordinary adventures of an ordinary man.

Of Plymouth Plantation

release date: Jun 01, 2006
Of Plymouth Plantation
From 1630 to 1651, William Bradford wrote a history of Plymouth, the very colony he helped to establish and govern. Never published in his lifetime, the handwritten manuscript was lost during the Revolutionary War, and was rediscovered and published for the first time in 1856. In this new edition, Caleb Johnson has added many valuable footnotes, and included many relevant photos and illustrations. Also included here with Bradford’s History is the complete text of the Pilgrims’ journals chronicling the first year at Plymouth. These exciting first-hand journals capture the day-by-day details of the explorations and adventures of the Pilgrims.

Here Shall I Die Ashore, Stephen Hopkins

release date: Jan 01, 2007
Here Shall I Die Ashore, Stephen Hopkins
The story of Stephen Hopkins, an ordinary Englishman whose life included many extraordinary events such as being shipwrecked in the Bermuda Triangle, witnessing famine and abandonment in Jamestown and participating in the marriage of Pocahontas. Stephens also sailed on the Mayflower, helped found Plymouth Colony, signed the Mayflower Compact, hosted Squanto at his house and participated in the first famous Thanksgiving. Genealogical information about early generations of the Hopkins family included.

A Method for Evaluating Grid Stability with High Penetrations of Renewable Energy and Energy Storage

release date: Jan 01, 2019
A Method for Evaluating Grid Stability with High Penetrations of Renewable Energy and Energy Storage
The rapid growth of electricity generation from variable renewable resources like wind and solar has greatly impacted wholesale energy markets and raised questions about future grid stability. With this paradigm shift, some existing coal, natural gas, and nuclear generators have encountered financial struggles, which has led to widespread retirements and tight capacity margins in some regions. Although this change could lead to reduced carbon emissions, synchronous generators provide some important reliability benefits to the grid that other technologies cannot easily replace. To assess the impact of an energy transition away from synchronous generation (e.g. fossil fuel fired power plants) and towards non-synchronous generation (e.g. wind and solar), future grid stability was investigated in the following three studies: (1) evaluating rotational inertia as a component of grid reliability with high penetrations of variable renewable energy, (2) determining the impact of non-synchronous generation on grid stability and identifying mitigation pathways, and (3) quantifying the regional economic and stability impacts of grid-scale energy storage. First, a method was developed to assess grid stability with increasing penetrations of non-synchronous renewable energy generation to determine when an electric grid might be more vulnerable to frequency contingencies, such as a generator outage. Unit commitment and dispatch modeling was used to quantify system inertia, an established proxy for grid stability. A case study of the Electric Reliability Council of Texas grid was used to illustrate the method. Results from the modeled scenarios showed that the Texas grid is resilient to major grid changes, even with relatively high penetrations (~30% of annual energy generation compared to 19% in 2018) of renewable energy. However, retiring nuclear power plants and private-use networks in the model led to unstable inertia levels in our results. When the system inertia was constrained to meet a minimum threshold in our model, multiple coal and natural gas combined-cycle plants were dispatched at part-load or at their minimum operating level to maintain stable system inertia levels. This behavior is expected to expand with higher renewable energy penetrations and could occur on other electric grids that are reliant on synchronous generators for inertia support. A method was also developed for assessing the impacts of stability support from inverter-connected resources. In this analysis, a fully disaggregated, inertia-constrained unit commitment and dispatch model was used to study the stability of future grid scenarios with high penetrations of non-synchronous renewable energy generation. As before, the Texas grid (the Electric Reliability Council of Texas – ERCOT) was used as a test case and instances when the system inertia fell below 100 GW·s (the grid''s current minimum level) were found, starting at an annual renewable energy penetration (including both synchronous and non-synchronous renewable resources) of ~30% in our model. At an ~88% renewable energy penetration, the average system inertia level also fell to 100 GW·s. When the modeled critical inertia limit was reduced to 80 GW·s, no critical inertia hours occurred for renewable energy penetrations up to 93% of annual energy. The critical inertia limit could drop to 60 GW·s if the largest generators in ERCOT (two co-located nuclear plants) were retired, but this had the same effect as reducing the limit to 80 GW·s and keeping these generators online, since the nuclear plants contribute a large portion of the grid''s system inertia. Emissions also increased by ~25% in the modeled scenarios where these nuclear plants were retired. If the critical inertia limit was kept the same (100 GW·s), adding 525 MW of fast frequency response from wind, solar, and energy storage could reduce the number of critical inertia hours by 86% with a response time of 15 cycles. Therefore, while the transition to a grid with mostly non-synchronous energy generation should be handled with care, many feasible pathways for integrating inverter-connected technologies and maintaining a stable grid exist. Building on the prior two methods, a third method was developed to evaluate the impact of energy storage systems on grid stability and system cost. While many grid-scale energy storage projects have been built and several have been announced, energy storage is costly and could negatively impact grid stability if systems are connected non-synchronously. Three different energy storage technologies with varying durations, ramp rates, and costs were modeled using a linearized dispatch model with discrete transmission zones and sub-hourly intervals (i.e. 15 minutes). Small penetrations of these technologies were modeled in a grid dominated by non-synchronous generation (51% wind and solar) to identify optimal storage zones. Transmission zones in the North, Northwest, West, Far West, and Panhandle regions were found to be the most favorable for building grid-scale storage from an economic standpoint. Next, higher energy storage penetrations were modeled to analyze the impact of storage on system inertia and the system cost. These high penetration scenarios focused primarily on storage divided across the optimal storage zones in proportion to their system cost impact. The modeling results showed that flywheels were able to maintain higher system inertia levels. Even so, the system cost was much lower when compressed air energy storage systems were modeled, demonstrating that high-duration energy storage technologies provided the most value to the grid. Energy storage was also more effective at maintaining grid stability and reducing costs than peaking plants. As a result, our model showed that new peakers might not be revenue sufficient in zones with high penetrations of renewable energy and energy storage. Many options exist for reliably integrating high penetrations of variable renewable energy generation, including an inertia market, synthetic and virtual inertia, and grid-scale storage, but few of these solutions are available today. Together, each of the analyses presented in this dissertation communicate when grid stability issues might occur and how low system inertia levels could be avoided
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