Solar Photovoltaic Turnkey Solution

We provide the solar photovoltaic (PV) turnkey solution covering all stages starting from feasibility study, authority submission, engineering design, material procurement, system installation, testing & commissioning.

Solar PV system harnesses energy from sun by directly converting sunlight into electricity using PV cells. The generated direct current (DC) electricity is then turned into alternating current (AC) using inverter. The AC electricity can then be used to power our common electrical loads.

There are basically three main types of PV installations:

1. Grid-Connected Photovoltaic (GCPV)

This refers to PV system which is synchronised and connected to the national electricity grid to jointly provide electricity to the building. The advantage of GCPV system is that any drop in  PV generation due to cloudy/rainy day shall be spontaneously covered by numerous other electricity generators which are also connected to the grid. Thus, the building shall not experience any intermittency of the PV system. The disadvantage, however, is that GCPV system is unable to remains in operation when the building is disconnected from grid due to tripping or utility breakdown. This is because GCPV systems are bound by safety regulation from utility provider to stop its operation whenever there intentional or unintentional breakdown at utility side. 

2. Off-Grid Photovoltaic (OGPV)

This refers to PV system which is totally isolated from utility grid. Good example of OGPV is a calculator with brownish stripe of PV cells which you may have seen before. If you have also tried removing the battery to rely solely on the PV cells, you will realise that the calculator will dim or even dies when there is not enough light. You will then decide to put the battery back on so that you do not lose precious calculations whenever someone blocks the light from shining onto your calculator. The advantage of OGPV lies in being able to operate even when the utility is out, distinguishing itself by having electricity while its non-OGPV neighbours do not. Similar to the calculator, however, there is a disadvantage of requiring battery to ensure stable electricity supply.

3. Hybrid Photovoltaic

As the name suggests, Hybrid PV is a combination between GCPV and OGPV. In fact, it literally switches from GCPV when utility grid is available, to OGPV when  utility grid is unavailable. The advantage of Hybrid PV is definitely enjoying the best of both worlds in term of electricity availalbility. It does, however, often come with higher cost of materials and due to the fact that battery is still required in order for the system to operate in OGPV mode.