Electricity

Peaking generation

Peaking generation runs during the peak hours (oft

Performance-based regulation

Performance-based regulation, commonly called PBR,

Petroleum electric generation

In regions with limited coal and/or natural gas su

Phase (in power systems)

Phase in a power system describes a full cycle in

Phasor measurement unit (PMU)

A phasor measurement unit, also called a PMU or a

Photoelectric ​effect

The photoelectric effect is a natural phenomenon i

Photovoltaic cells

Photovoltaic conversion generates electricity dire

Photovoltaic solar power

Photovoltaic, or solar, cells are semiconductor ma

Potential transformer

A potential transformer (PT) is a device that lowe

Power factor (Pf)

Power factor is defined as the ratio of real power

Power flow model

Power pool

A power pool is an entity that handles scheduling

Power system stabilizer (PSS)

A power system stabilizer (PSS) is a control syste

Price index

A price index is a formula for calculating the mar

Price risk

Price risk is the possibility that a commodity pri

Price swap

Another common over-the-counter (OTC) derivative i

Prosumer

A prosumer is an electricity customer that both co

Public power agency

Smaller municipal utilities and/or public utility

Public Utility Regulatory Policies Act

The first move toward restructuring of U.S. electr

Pumped hydroelectric energy storage

Pumped storage plants are like impoundment hydropo