ountries worldwide, including Germany, Spain, China, the United States, and others, are rapidly expanding their solar power infrastructure. China has been a particularly prominent player, contributing nearly one-third of new capacity additions.

Wind power in the United States has seen significant growth. California led the way in the 1980s, and wind energy quickly spread across the Wind Belt, including states like Texas. Favorable policies and declining costs contributed to the expansion. Wind now accounts for about 9% of national electricity generation, with Texas having 37 GW of installed wind capacity, ranking third globally.

The wind energy industry started in the 1980s in Southern California and several European countries. Today, the United States, Europe, and countries like India, Australia, Japan, Canada, China, and Brazil lead in new wind power capacity. Currently, wind power generates around 7% of global electricity, with onshore systems dominating but offshore capacity expected to grow in the future.

The Inflation Reduction Act (IRA) is the largest-ever federal program focused on energy and the environment, allocating $369 billion over a decade. With a laser focus on climate change, the IRA aims to cut greenhouse gas emissions, promote clean energy, and enhance climate resilience. Its provisions have the potential to create jobs, lower electricity costs, and significantly contribute to meeting the US climate targets.

Windmills have been used for hundreds of years to collect energy from the wind in order to pump water, grind grain, and more recently generate electricity. There are many possible designs for the blades of a wind generator and engineers are always trying new ones. Design and test your own wind generator, then try to improve it by running a small electric motor connected to a voltage sensor.

In this activity, students develop an understanding of how engineers use wind to generate electricity. They will build a model anemometer to better understand and measure wind speed.

Students learn how engineers transform wind energy into electrical energy by building their own miniature wind turbines and measuring the electrical current it produces. They explore how design and position affect the electrical energy production.

Student pairs design and construct small, wind-powered sail cars using limited quantities of drinking straws, masking tape, paper and beads. Teams compete to see which sail car travels the farthest when pushed by the wind (simulated by the use of an electric fan). Students learn about wind and kinetic and renewable energy, and follow the steps of the engineering design process to imagine, create, test, evaluate and refine their sail cars. This activity is part of a unit in which multiple activities are brought together for an all-day school/multi-school concluding “engineering field day” competition.

To explore different ways of using solar energy, students build a model solar water heater and determine how much it can heat water in a given amount of time. Solar water heaters work by solar radiation and convection.