Utilities have long been faced with the challenge of balancing electric generation with consumers demand. Increasing amounts of variable renewable generation to the grid has made cost effective balancing activities very important. This session will examine various consumer demands that might participate in some aspects of the wholesale energy market.
How Can Mobile Load Participate In New England Wholesale Markets?
With FERC order 745 requiring the payment of full LMP for demand response resources participating in the wholesale market, ISO New England (ISO-NE) is developing a plan to fully integrate demand resources into the wholesale market on a comparable footing with supply resources (generators). These resources would see similar market requirements to the supply resources, and would be able to participate in those markets in which the demand resource can prove that they can provide the service required by that market.
These markets are presently well defined and so are their requirements. Aggregators will need to communicate with these mobile loads and provide the required information back to ISO-NE. Interoperability between the mobile load and the aggregator will be essential. ISO-NE will not want to communicate with 100,000 mobile loads individually. The paper will discuss what the type of information presently required of supply resources and the types of similar information that would be required of aggregated mobile loads for their participation.
Integration of Financial Processes between Utilities and Renewable Energy Suppliers
Renewable Portfolio Standards (RPS) are driving utilities to aggregate and integrate a large number of renewable energy sources into their grids. While an important aspect of the integration is integration and interoperability of financial processes between the buyers and sellers, such process integration is largely ad hoc and immature today. The proposed paper surveys the dominant approaches currently employed by utilities and their trading partners, discusses the issues and challenges involved and proposes a more efficient interoperability model. Based on such a model, the author discusses approaches and requirements to support greater transparency, accountability and efficiency between utilities and their renewable energy suppliers.
We contrast what we call MicroMarkets with today's wholesale energy markets (MacroMarkets), and show how markets can be structured by binding MicroMarkets to MicroGrids while allowing coherent product definitions where those MicroMarkets participate in MacroMarkets.
In Structured Energy: A Topology of Microgrids [Grid-Interop 2010] we showed how to combine MicroGrids using markets. Taking this concept further, we describe how to bind simple markets to sets of one to many MicroGrids.
MicroMarkets share several requirements with MacroMarkets. These include •Market clearing •Converging and straightforward algorithms •Clear rules
In the OASIS Energy Interoperation architecture each edge in the directed graph composes appropriate security, reliability, and performance (through direct composition or designed in the implementation). By linking a market to nodes in the directed graph of actors, a market can be implemented for part of a building or factory, a facility, a neighborhood, or other levels.
By using MicroMarkets we take advantage of local balance of supply and demand, leading directly to improved balance at higher levels by transacting with those better managed markets.
Grid-Interactive Electric Thermal Storage provides economic and environmental benefit
Utilities have long been faced with the challenge of balancing electric generation with consumer demand. Increasing amounts of variable renewable generation to the grid has made cost effective balancing activities very important. Grid-Interactive Electric Thermal Storage (GETS) allows for a higher percentage of renewable energy to be integrated to the grid by dynamically coupling consumer real time electric usage to available renewable generation. The ability to dispatch GETS by the hour, minute, or second in the precise amount needed to follow the immediate needs of the grid makes it ideal for enhancing grid reliability, stability and optimization. As an on-site by-product, it can provide space and water heating for residential and commercial buildings. Pilots across North America are showing outstanding “Double Green” benefits: economic and environmental. Very low or negative annual wholesale net operating costs (energy cost minus regulation value) are realized by continuously monitoring and quickly changing the charge rate of these distributed electric storage units. By varying load rather than using fuel-consuming generation to perform fast regulation, significant carbon reduction can be realized.
This presentation focuses on the real-time interoperation value between GETS and the grid and its scalable, low cost way to storing terawatt hours of electric energy.