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.
Assessing financial viability of solar panel installations- recap. Overall (Average) Solar panels cost (from recently updated figures in 2013) ranges between $1750 â $2500 per Kw of installed capacity (average Solar panel cost per kw). This figure includes purchasing the equipment and cost for solar panel installation.