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Featured Energy Storage & Grids White Papers

DC-COUPLED UTILITY-SCALE SOLAR PLUS STORAGE
Published by Dynapower

All Energy Storage & Grids White Papers

RENEWABLE ENERGY STORAGE

Global energy demand is expected to increase by 30 percent between 2018 and 2040, the equivalent of adding another China and India to our planet.1 Renewable energy sources will help meet that demand and will require not one, but a robust mix of energy storage technologies to lower the planet’s carbon footprint, create efficient energy models and stabilize the grid.

ESSENTIAL GUIDE TO RENEWABLE ASSET MANAGEMENT SOFTWARE

Dropping investment costs are causing new companies to sprout up every day and lower energy pricing is putting even more pressure on renewable energy asset managers to squeeze every dollar out of their budgets and save their margins. Renewable asset management software can help asset owners and operators grow their portfolios in an increasingly complex environment. This guide will walk readers through the essentials of renewable asset management software including misconceptions about asset management, the benefits of software, and how to recognize when you need it. The guide will also give common renewable asset management scenarios and workflows that can be automated or benefit from an asset management software solution.

DC-COUPLED UTILITY-SCALE SOLAR PLUS STORAGE

The addition of energy storage to an existing or new utility-scale PV installation allows system owners and operators the opportunity to capture additional revenues. Traditional storage plus solar applications have involved the coupling of independent storage and PV inverters at an AC bus or the use of multi-input hybrid inverters. An alternative approach – coupling energy storage to PV arrays with a DC-to-DC converter – can help maximize production and profits for existing and new utility-scale installations. DC-Coupled Utility-Scale Solar Plus Storage leads to higher round-trip efficiencies and lower cost of integration with existing PV arrays and at the same time, opens up new revenue streams not possible with traditional AC-coupled storage, including clipping recapture and low voltage harvesting, while being eligible for valuable tax incentives.

FURTHER BEYOND 4 HOURS: REVISITING LONG-DURATION STORAGE

Key highlights from the report include: • Long-duration storage is now commonly viewed as having an energy delivery time of at least four hours, and the need for it is growing. • Renewable energy self-consumption is seen as the most promising application for long-duration storage. • A Levelized Cost of Storage (LCOS) calculation is considered the most reputable selection criterion in determining which long-duration storage technology to deploy. • The most promising technology for long-duration storage is flow batteries and the key criterion for selecting a given asset is cost, particularly the capital expense required.

BRINGING THE GRID TO LIFE - WHITE PAPER ON THE BENEFITS TO CUSTOMERS OF TRANSMISSION MANAGEMENT TECHNOLOGIES

Most forms of infrastructure are being transformed with modern monitoring, data communication, data analysis, and remote control systems. The electric transmission system is poised to be the next sector. A number of proven, advanced technologies exist which can help optimize the existing transmission grid. These technologies can variously allow hidden transmission capacity to be identified and utilized, reduce power flow on overburdened lines, and/or reconfigure existing grid elements to optimize various operational scenarios. These advanced technologies can be applied singly or in combination.

VALUING THE RESILIENCE PROVIDED BY SOLAR AND BATTERY ENERGY STORAGE SYSTEMS

Researchers from NREL and Clean Energy Group found that placing a monetary value on the ability of solar+storage to avoid losses during grid outages can significantly impact project economics and system design. Using data from Southern California Edison, researchers analyzed the economic case for solar+storage for three customer types (school, office building, and hotel) in Anaheim, California. In each case analyzed, larger PV and battery storage systems were found to be economical when the value of resilience is accounted for.

MAXIMIZE PV PRODUCTION WITH ENERGY STORAGE & A DC-TO-DC CONVERTER

Traditional storage plus solar (PV) applications have involved the coupling of independent storage and PV inverters at an AC bus, or alternatively the use of multi-input hybrid inverters. Here we will examine how a new cost-effective approach of coupling energy storage to existing PV arrays with a DC-to-DC converter can help maximize production and profits for existing and new utility-scale installations. This new approach leads to higher round trip efficiencies and lower cost of integration with existing PV arrays, and at the same time opens up new use cases not possible with traditional AC-coupled storage.

IS SOLAR PLUS STORAGE RIGHT FOR YOU?

In this white paper you will learn how to gain more control over your utility expenditure and save money, including strategies to monitor and optimize energy use for your commercial building. You will also learn about energy optimization tactics including demand shaving, consumer self-supply and time-of-use arbitrage. WE explain in detail the science behind our plug-and-play MicroStorage product, Phazr, the most cost effective and efficient solution available today.

TRUE 1,500 V DC TECHNOLOGY FOR THE NEXT GENERATION OF PV POWER PLANTS

SMA America compiled a white paper to evaluate the value of 1,500 V DC technology in power plants, citing that optimized stack design results in greater annual power production and higher availability. The paper looks at the role that inverters play in large-scale power plants, and the importance of superior technology to ensure long plant life and high performance.

HOSTING CAPACITY: USING INCREASED TRANSPARENCY OF GRID CONSTRAINTS TO ACCELERATE INTERCONNECTION PROCESSES,

This paper is the third in SEIA's series on grid modernization and focuses on improving interconnection with hosting capacity analyses. As with the rest of the papers in this series, the experiences of two leading states, California and New York, are examined.