The lighthouse will be 40 feet high, fifteen feet across at the base, and ten feet across at the top.

The bottom thirty feet will made of be reinforced concrete block covered with local stones.

The roof will be covered with mexican tile to match the casitas.

The area where the lighthouse light is located will be simular to a wooden gazebo.
Inside a stairway will give access to the light.
We want to be able to sit in chairs at the top. The windows will open.
Each ten feet will have a platform that we will use for storage.

Click for Full-size picture of the Lighthouse.

Light:

The light will be a 20 watt low energy unit that produces what a 75 watt incandescent light does.
The light house will be powered by its own solar unit.
One 75 watt solar panel, one battery, and one inverter / controler.

Appliances	Watt Hours/ Day	Hours/ Day		Watts/ Day
Lighthouse Light	20	x	12	=	240
First Floor	20	x	1	=	20
Second Floor Light	20	x	1	=	20
Third Floor Light	20	x	1	=	20
Total watt hours per day				=	300
Multiply by 1.20 for Inverter Loss				=	360

Calculations For Number of Solar Panels Needed
Total Watts Used per Day	360
Number of Sunlight Hours for Charging	5
# of Watts a 75w Solar Panel Will Produce in 5 Hours	375
Divide 375w into 360w This = # of Panels Needed	1
Round to Number of Solar Panels	1
Cost Estimate for 75w Solar Panel	$125.00
Number of Solar Panels x $125.00	$125

Calculations For Battery Sizing
Watts / Volts = Total Amps Used per Day (360w / 12v)	3
184 Amp-Hour Battery	184
Only Discharge Battery to Half Life	92
Total Amps / Battery Amps Available (3a / 92a)	1
Number of Batteries Needed	1
Cost Estimate of 184 Amp Batteries	$179.00
Total Cost of Batteries	$179.00

Pricing Calculations
1 Solar Panel 75w	$125.00
1 - 184 Amp Battery	$179.00
Inverter System	$200.00
Cables and Mounts	$100.00
California Tax 7.75%	$46.00
Total Cost Estimate of Solar System	$650.00