Solar panels (Solar panels or Photovoltaics) are the combination of solar cells in a single circuit to produce direct current (DC). The panels are square and can be divided into 3 types:

1. Monocrystalline Silicon Solar Cells

2. Polycrystalline Silicon Solar Cells

3. Thin Film Solar Cells, all 3 of which have their own advantages and disadvantages, including the price, both cheap and expensive .

Solar Roof Tile or also known as Solar Shingles is a solar cell sheet that looks like a roof tile. It can produce electricity. It can be said that there is no need to install roof tiles. Just install Solar Roof Tile instead. It is more beautiful than houses with traditional solar panels.

A wind turbine is a type of machine that can receive and convert kinetic energy from the movement of the wind into mechanical energy. And use the mechanical energy to pump water directly or produce electrical energy. The development of wind turbines for use has been around since ancient Egypt until the present day. The design of wind turbines requires knowledge of wind dynamics and engineering principles in various fields to get maximum power, energy and efficiency.