Building installations that work with beams Crossword Clue

 The answer to the crossword clue "Building installations that work with beams" is SOLAR PANELS. 

Solar panels are a type of photovoltaic (PV) panel that converts sunlight into electricity. They are made up of solar cells, which are semiconductor devices that absorb sunlight and generate electricity. Solar panels are typically mounted on roofs or other structures to collect sunlight.

Solar panels are used in a variety of building installations, including:

Solar-powered homes: Solar panels can be used to provide electricity for homes, offsetting the need for fossil fuels.

Solar-powered businesses: Solar panels can be used to provide electricity for businesses, saving money on energy costs.

Solar-powered schools: Solar panels can be used to provide electricity for schools, reducing their reliance on the grid.

Solar-powered factories: Solar panels can be used to provide electricity for factories, helping them to reduce their environmental impact.

Solar panels are a clean and renewable source of energy that can help to reduce our reliance on fossil fuels. As the cost of solar panels continues to decline, they are becoming a more and more viable option for building installations.