Geodes differ from vugs in possessing an outer mineral layer which is more resistant to weathering than the host rock. As such, complete geodes commonly weather out of rock exposures and accumulate in canyons, talus, rock detritus, etc.eodes differ from nodules in that a nodule is a solid mass of mineral matter, but some nodules may have a tiny void space in their interiors and the distinction between a geode and a nodule may be barely discernible if the cavity is miniscule.
As mentioned in the introduction, residential solar systems are typically sized from 3 to 8kW and end up costing somewhere between $15,000 and $40,000. In this section, we will look at the costs of the various components of a solar system (not installation or operational costs).
An average residential solar system costs between $15,000-$25,000 after solar rebates and solar incentives. Considering that you will probably spend over $72,000 in electrical bills over the next 25 years, this can be a small price to pay. The incentive based on the amount of electricity displaced by the solar water heating system. 2  The incentive is set at $1.50 per annual kilowatt-hour (kWh) displaced, up to $4,000 for residential systems and $25,000 for non-residential systems. 3  Displaced kWh may not exceed 80% of the calculated existing thermal load.