Off-Grid Solar Systems
An off-grid solar system (off-the-grid, standalone) is the obvious alternative to one that is grid-tied.
For homeowners that have access to the grid, off-grid solar systems are usually out of question.
Here`s why: Read more…
Grid-Tied Solar Systems
Grid-tied, on-grid, utility-interactive, grid inter-tie and grid backfeeding are all terms used to
describe the same concept – a solar system that is connected to the utility power grid.
Hybrid Solar Systems
Hybrid solar systems combines the best from grid-tied and off-grid solar systems.
These systems can either be described as off-grid solar with utility backup power, or grid-tied solar with extra battery storage. Read more…
General Information on Batteries
Deep Cycle Batteries are the key component in various types of renewable energy systems that require the storage of electricity. A battery is essentially a storage vessel for electricity. It is a critical component heavily relied upon by the system as a whole. A battery bank can provide a relatively constant source of power when the grid is down, or during periods when your photovoltaic system is not producing power. Although batteries are not one hundred percent efficient, they are predictable and stable enough for reliable long-term service. Read more…
How do solar inverters work?
Inverters play a crucial role in any solar energy system and are often considered to be the brains of a project, whether it’s a 2-kW residential system or a 5-MW utility power plant. An inverter’s basic function is to “invert” the direct current (DC) output into alternating current (AC). AC is the standard used by all commercial appliances, which is why many view inverters as the “gateway” between the photovoltaic (PV) system and the energy off-taker. Read more…
What is the solar charge controller?
A charge controller helps to manage the voltage of the system and to manage the charging of the batteries. The basic functions of a controller are quite simple. Charge controller block reverse current and prevent battery overcharge. Some controllers also prevent battery over discharge, protect from electrical overload, and/or display battery status and the flow of power.
A charge controller automatically tapers, stops, or diverts electrical power when systems batteries become fully charged. Read more…
A solar panel is nothing more than a collection of solar cells on a single panel. Each individual solar cell in the solar panel can generate approximately half a volt of current so if you combined 36 cells you would get around 18 volts of current. The panels usually have light aluminum frames to hold the solar cells in place and are covered with a non-reflective glass to protect the cells from weather and damage since silicon cells are very fragile. Read more…
How Solar Cells Work
A solar cell, sometimes called a photovoltaic cell, is a device that converts light energy into electrical energy. A single solar cell creates a very small amount of energy (about .6 volts DC) so they are usually grouped together in an integrated electrical panel called a solar panel.
Sunlight is a somewhat diffuse form of energy and only a portion of the light captured by a solar cell is converted into electricity. Read more…
wind Energy systems
Wind Energy Systems can provide electricity whether or not you are tied to the Grid. Wind generators can be used in stand-alone systems or combined with solar panels and/or hydro power.
Today advances in the design of modern wind turbines are leading to a great revival in the use of wind energy. Wind energy is not limited to the giant wind farms that are sprouting up on hillsides around the world.