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Terms for Architecture, Green Building & Energy

This glossary includes more than 300 solar terms, as well as hundreds of additional sustainable design and construction terms.

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P-Type Semiconductor


Packing Factor

Pad Mount Transformer


Parallel Connection

Particulate Matter

Pass-Through Entity


Passive Cooling

Passive Design

Passive Downdraft Evaporative Cooling

Passive Heating

Passive House

Passive Income

Passive Solar Water Heater

Passive Tax Appetite

Passive Ventilation

Payments-In-Lieu-of-Taxes (PILOT)

Peak Demand

Peak Load

Peak Power Current

Peak Power Point

Peak Power Tracking

Peak Sun Hours

Peak Watt

Perimeter Zone

Permits Required (Wind)

Pervious Area

Pervious Paving

Phosphorous (P)


Photoelectric Cell

Photoelectrochemical Cell


Photovoltaic (PV) Array

Photovoltaic (PV) Cell

Photovoltaic (PV) Conversion Efficiency

Photovoltaic (PV) Device

Photovoltaic (PV) Effect

Photovoltaic (PV) Generator

Photovoltaic (PV) Module

Photovoltaic (PV) Panel

Photovoltaic (PV) System

Photovoltaic Panels (PVs)

Photovoltaic(s) (PV)

Photovoltaic-Thermal (PV/T) System

Physical Vapor Deposition

Plat Drawings


Pocket Plate

Point Multiplier

Point-Contact Cell


Polycrystalline Silicon

Post-consumer Recycled Content

Potable Water

Potent Industrial Greenhouse Gases

Power Conditioning

Power Conditioning Equipment

Power Conversion Efficiency

Power Curve (Wind)

Power Density

Power Factor (PF)

Power Purchase Agreement (Wind)

Pre-consumer Recycled Content

Previously-developed Area

Primary Battery

Pro Forma

Pro Rata

Production Tax Credit (PTC)

Programmable Thermostat

Project Phasing

Projected Area

Public Utility Commission (PUC), Public Services Commission

Public Utility Regulatory Policy Act (PURPA)

Pulse-Width-Modulated (PWM) Wave Inverter