The main objective of a physical map is to show landforms, bodies of water and other geographical features. Features shown include mountains, deserts and lowlands as well as lakes, rivers and oceans.
Depending on your electricity prices, a 400 watt HID will cost $200 â $400 each year of use, plus the cost of replacement bulbs. LEDs meant to replace 400w HIDs average around 180 watts.
Rating Newest Oldest. Best Answer: Depends on if you are planning on doing the installation yourself. The going price these days for a professionally installed PV (photovoltaic) grid tied system is about $9 per watt. So an installed 10kW system without battery backup would cost about $90,000.Depending on where you are, that could generate an average of about 1000kwh per month, more in the south, less in the north.ating Newest Oldest. Best Answer: Depends on if you are planning on doing the installation yourself. The going price these days for a professionally installed PV (photovoltaic) grid tied system is about $9 per watt. So an installed 10kW system without battery backup would cost about $90,000.