They have access to the sun, right?
Each system will have a characteristic profile of absorption efficiencies, that are incumbent on location, altitude and construction materials.
Solar energy exists as long as the sun shines (or exists!).
Solar energy will continue as long as there is sun.
Solar energy in an abundant renewable energy source. As long as the sun shines there will be a source of solar energy.
As long as there is a sun
No, solar energy is a renewable energy source that relies on the sun's radiation, which is a virtually inexhaustible resource. As long as the sun continues to shine, we can harness solar energy to generate electricity through solar panels.
Solar energy systems can save you money in the long term so yes
Solar energy reaches Earth instantaneously as sunlight, but it takes time to convert this energy into electricity through solar panels. Once sunlight is absorbed by solar panels, it can be converted into electricity. This process happens in milliseconds.
Solar energy is considered an indefinite energy source because it is derived from the sun, which is expected to last for billions of years. As long as the sun continues to shine, we can harness solar energy for electricity generation.
Solar energy is a renewable energy since you can always get energy from the sun and it will never run out, hence the word renewable. Although the sun will explode in around 4 or 5 billion years, solar energy is virtually renewable and will be available for a long, long time.
There are no energy sources that will never run out, but the sun will last a good long time, so any energy derived from solar will last a good long time. This includes direct solar, such as roof mounted water tanks, conversion of solar to electric by solar cells, bio-solar (grow things which convert to energy), wind, water, earth thermal, and similar.
Solar energy is a potential alternative for fossil fuels. It is a renewable source of energy and will be available as long as the sun lasts.