Architectural Engineering

Information on photovoltaic energy, passive houses, and ongoing research projects.

Find longitude, latitude, and sun angles by entering data, or by selecting a city from a pull-down box.

NREL researches photovoltaic energy, solar thermal devices, and applications.

Provides meteorological data and global horizontal, direct normal and diffuse horizontal irradiance for solar energy engineering.

Links to the most prominent solar energy research organizations.

This online catalog of solar panels and equipment offers photos, descriptions, and manufacturer specification sheets.