Solar Powered Greenhouse Heater

solar powered
A type of quartz movement where the batteries are recharged via solar panels on the watch face. They have a power reserve so they can run even in the dark.
Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies.
A watch that uses solar energy (from any light source) to power the quartz movement.

greenhouse
A glass building in which plants are grown that need protection from cold weather
a building with glass walls and roof; for the cultivation and exhibition of plants under controlled conditions
of or relating to or caused by the greenhouse effect; "greenhouse gases"
A greenhouse (also called a glasshouse) is a building where plants are grown.

heater
A person or thing that heats, in particular a device for warming the air or water
fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"
device that heats water or supplies warmth to a room
A fastball
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.
A conductor used for indirect heating of the cathode of a thermionic tube