Please use the left navigation bar to access smart grid acronyms alphabetically.

Regulatory Assistance Project - The Regulatory Assistance Project (RAP) is a global, non-profit team of experts that focuses on the long-term economic and environmental sustainability of the power and natural gas sectors, providing technical and policy assistance to government officials on a broad range of energy and environmental issues. Formed by a group of veteran utility regulators, RAP has deep expertise in regulatory and market policies that promote economic efficiency, protect the environment, ensure system reliability, and fairly allocate system benefits among all consumers. Source: RAPOnline
Remedial Automation Schemes - An automatic protection system designed to detect abnormal or predetermined system conditions, and take corrective actions other than and/or in addition to the isolation of faulted components to maintain system reliability. Such action may include changes in demand, generation (MW and Mvar), or system configuration to maintain system stability, acceptable voltage, or power flows. An SPS does not include (a) underfrequency or undervoltage load shedding or (b) fault conditions that must be isolated or (c) out-of-step relaying (not designed as an integral part of an SPS). Also called Remedial Action Scheme. Source: BPA
Role Based Access Control - With role-based access control, access decisions are based on the roles that individual users have as part of an organization. Users take on assigned roles (such as doctor, nurse, teller, manager). The process of defining roles should be based on a thorough analysis of how an organization operates and should include input from a wide spectrum of users in an organization. Source: NIST
Remote connect/disconnect - The ability to physically turn on or turn off power to a particular billing or revenue meter without a site visit to the meter location. Source: FERC
Research, Development, and Demonstration - Research Development and Demonstration (RD&D) Division supports public interest energy research, development, and demonstration. RD&D activities include providing contracts and grants for research and development of energy technologies and related scientific activities. Source: CPUC
Regional Entity
Renewable Energy Certificate - A REC represents the property rights to the environmental, social, and other nonpower qualities of renewable electricity generation. A REC, and its associated attributes and benefits, can be sold separately from the underlying physical electricity associated with a renewable-based generation source. Source: EPA
Renewable Energy Transmission Initiative - The Renewable Energy Transmission Initiative (RETI) is a statewide initiative to help identify the transmission projects needed to accommodate these renewable energy goals, support future energy policy, and facilitate transmission corridor designation and transmission and generation siting and permitting. RETI will be an open and transparent collaborative process in which all interested parties are encouraged to participate. Source: California Energy Commission
Request For Comments or Remote Feedback Controller or Reliability First Corporation
Radio Frequency Identification - Radio frequency identification (RFID) is a generic term that is used to describe a system that transmits the identity (in the form of a unique serial number) of an object or person wirelessly, using radio waves. It's grouped under the broad category of automatic identification technologies. Source: Association for Automatic Identification and Mobility
Return on Assets - An indicator of how profitable a company is relative to its total assets. ROA gives an idea as to how efficient management is at using its assets to generate earnings. Calculated by dividing a company's annual earnings by its total assets, ROA is displayed as a percentage. Sometimes this is referred to as "return on investment". Source: Investopedia
Routing over Low power and Lossy networks
Renewable Power or Portfolio Standards - A Renewable Portfolio Standard (RPS) provides states with a mechanism to increase renewable energy generation using a cost-effective, market-based approach that is administratively efficient. An RPS requires electric utilities and other retail electric providers to supply a specified minimum amount of customer load with electricity from eligible renewable energy sources. The goal of an RPS is to stimulate market and technology development so that, ultimately, renewable energy will be economically competitive with conventional forms of electric power. States create RPS programs because of the energy, environmental, and economic benefits of renewable energy and sometimes other clean energy approaches, such as energy efficiency and combined heat and power (CHP). Source: EPA
Rivest, Shamir, Adelman - RSA is an Internet encryption and authentication system that uses an algorithm developed in 1977 by Ron Rivest, Adi Shamir, and Leonard Adelman. The RSA algorithm is the most commonly used encryption and authentication algorithm and is included as part of the Web browsers from Microsoft and Netscape. It's also part of Lotus Notes, Intuit's Quicken, and many other products. The encryption system is owned by RSA Security. The company licenses the algorithm technologies and also sells development kits. The technologies are part of existing or proposed Web, Internet, and computing standards. Source: Techtarget.com
Regional Transmission Operator - A regional transmission organization (RTO) is an independent organization (profit or non-profit) established for the purpose of operating the transmission assets and providing wholesale transmission services within a defined (usually multi-state) geographic region. Typically, the RTO does not itself own the transmission facilities but instead operates them on behalf of the transmission-owning utilities. An RTO may operate a central energy market in addition to providing transmission services. The functions of RTOs can include facilitating or operating a day-ahead energy market; planning transmission; monitoring markets; managing the queue for generator interconnections; and administering the transmission tariffs for transmission service, congestion pricing and ancillary services. Source: NREL
Real-Time Pricing, Real Time Ratings - The term “real time pricing” is used to describe how the more sophisticated or more detailed information derived from the smart meters is used to bill end use customers. This type of pricing is also referred to by its proponents as “dynamic pricing.” Typically, smart meters are accompanied by a proposal to change the way in which electricity is priced on the customer’s monthly bill. These electricity pricing programs (known in the regulatory world as “rate design”) vary the price of electricity according to time of day or even every hour, charging more or less for electricity based on higher production costs, in states with vertically integrated utilities, or conditions in a wholesale electricity spot market in states where distribution utilities have divested their power plants and must purchase wholesale energy for retail customers. At its most basic, “real time pricing” means that a customer is charged more for electricity at peak periods when production costs or wholesale spot market prices increase (due to high demand and the need to turn on the most expensive generating resources) and less for off-peak periods when there is likely to be a larger surplus of electricity and lower demand (and when the least expensive baseload generating units are used). Source: www.pulp.tc
Remote Terminal Unit - In SCADA systems, an RTU is a device installed at a remote location that collects data, codes the data into a format that is transmittable and transmits the data back to a central station, or master. An RTU also collects information from the master device and implements processes that are directed by the master. RTUs are equipped with input channels for sensing or metering, output channels for control, indication or alarms and a communications port. Source: Webopedia
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