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Residential Solar Panel Installations


Residential property owners can benefit from solar energy by installing right on their property, usually as a rooftop system. In fact, the majority of solar installations in Singapore are on residential properties.


Residential solar panel systems are smaller than commercial/industrial or utility-scale solar installations, and the panels themselves are also smaller in size. A typical residential solar system might be in the range of 5 to 15 kilowatts (kW), but a residential solar system can be however big or small you need it to be, depending on your electricity usage.


Residential solar is considered as “distributed generation,” meaning that the energy produced by the system is used at or near the point of generation. Residential distributed generation projects like rooftop solar are typically connected to your local electric grid. This allows for residential property owners to take advantage of net settlement, a policy enabling solar customers to send excess electricity back to the grid for rebate.


How Does Net Settlement Work?


Net settlement of energy is a solar rebate that allows you to send excess solar electricity to the grid in exchange for electric bill credits. If you use more electricity in the system than your solar panels generate, you can use these credits to reduce the electricity needed to be purchased from the utility. Net settlement allows property owners with solar to take full advantage of the energy produced by their system, as production and usage can vary with seasonality.


Residential Solar Installations: Rooftop System


Mostly, a residential solar system is installed on top of a roof. The rooftop systems are far more common in Singapore. However, if your roof is partially shaded, old, damaged, or interrupted with skylights and other obstacles, there may not be space to install enough solar panels to generate a sufficient amount of power.


Rooftop installations are more popular for residential solar shoppers for several reasons. Firstly, rooftop systems don’t use up valuable property space. Installing solar panels on roofs uses sunny square footage that is otherwise unused. Rooftop systems are also less expensive than a similarly-sized ground-mounted installation. This is due to the extra mounting and racking equipment required for ground-mounted solar.


For residential properties with an ill-suited home roof for solar, there are several other ways to install solar panels. Structures like gazebos, patio covers, and sheds can all be equipped with solar panels without sacrificing any ground space. There may be additional costs associated with non-home roof structures (like extra racking to tilt panels to the correct angle), but if you’re installing on an existing structure, the costs are likely comparable to a standard rooftop solar installation. Of course, if you’re don’t have an existing structure to install these solar panels on top of, the added costs of building a new gazebo or shed to host the solar panels should be factored into your costs and savings projections as you’re considering installing solar.

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