Sunday, September 9, 2018

Explained In 30 Seconds - Hybrid Solar Energy Systems


- Explained In 30 Seconds -
Hybrid Solar Energy Systems 

This article is designed to simplify you're understanding of what a hybrid PV system is and how it works

WHAT IS A HYBRID PV SYSTEM?

A solar energy system that connects to the grid, has battery backup, and can operate in on grid and off grid mode

Major System Components:
  • Solar Modules
  • Hybrid Inverter/Charger (today these are integrated together)
  • Batteries
  • Mounting System
  • Wiring - PV and Battery
  • Safety Disconnects

ON GRID vs HYBRID
Advantages

On Grid

  1. Cheapest system cost
  2. Most simplified system
  3. Can sell power to the grid

Hybrid

  1. Works on and off grid
  2. Can sell power to grid
  3. 24/7 power supply


ON GRID vs HYBRID

Disadvantages

On Grid

  1. PV can't operate without grid
  2. Less overall power control

Hybrid

  1. More expensive then on grid
  2. More components to maintain

HOW DOES A HYBRID PV SYSTEM WORK?

  • Solar Panels convert energy from sunshine into DC electricity
  • Solar electricity is transmitted to either
    1. The house loads
    2. Battery bank
    3. Back to the grid
  • If the grid shuts off the hybrid inverter becomes isolated from the grid and operates in off grid
  • The battery can send power to the grid or the loads

BATTERIES

Lead Acid vs Li-Ion

Lead Acid - VR / AGM


Advantages
  1. Lower cost
  2. Safe to operate
Disadvantages
  1. Lower cycle life vs Li-Ion
  2. Larger and heavier vs Li-Ion
Expected Lifetime = 3 to 5 years

Lithium Ion


Advantages
  1. High Depth of Discharge
  2. More life cycles then Lead
Disadvantages
  1. Higher initial cost
  2. Fire - depending on makeup
Expected Lifetime = 10+ years

HYBRID PV SYSTEMS

from Symtech Solar

About Us
Symtech Solar Group is an American renewable energy company that has pioneered the upstream PV system integration process from its factory platform in China. Headquartered in Shanghai, China, Symtech Solar offers more than seven different solar energy product lines designed for the residential, commercial and rural markets, as well as providing customized, flexible PV solutions.  More information can be found here.
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