What doesn't move, however, is a suspended mass inside the seismograph, called the seismometer. During an earthquake, the seismometer remains still while the case around it moves with the ground shaking. Traditionally, the suspended mass was a pendulum, but most modern seismometers work electromagnetically.
Solar electricity costs about $10 to $12 a watt installed, though you may be eligible for state incentives. Check your utility bill to see your monthly usage. A robust solar electric system will cost about $20,000. You can spend as much money, to receive as much solar electricity, as you feel comfortable with.
Real solar cost estimates show how state, regional, and local incentives are helping bring the cost of solar way down. In many states, you can go solar for less than $10,000.Hereâs a look at the average cost to go solar in each state (See first image).eal solar cost estimates show how state, regional, and local incentives are helping bring the cost of solar way down. In many states, you can go solar for less than $10,000.