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FAQs
Not sure about something? Do take a look at the frequently asked questions that we get from our customers. Hopefully it will answer any clarifications that you have. If you are still unsure, do send an email to info@sene.sg and we will be more than happy to answer any clarifications that you have.

Financial

SENE offers a variety of payment options. In addition to paying the full amount upfront, we also offer solar leasing.

Solar leasing is where we install the solar panels for no money down. Property owners will, in return, pay a fee for the rights to use the electricity produced by the panels across a period of time, usually between 15 to 25 years. Once the arrangement is over, property owners will have no further financial liabilities.

Depending on the specifics of the lease, fees can be paid monthly, yearly or in whole. Monthly payments are the preferred payment option.

Yes, all customers whether contestable or non-contestable can enjoy net settlement (i.e rebate) for export of excess solar PV energy
For purchase options other than outright purchase, in the event where you sell the building, there are a few possible options.
  • The preferred option is for the agreement to be transferred over to the new owner.
  • In the rare occasion where the new tenant is not keen in keeping the system, please contact us so that we are able to assist you.
Normally, customers prefer to have a fixed rate with mutually agreeable escalation factor. This acts as a hedge to grid price fluctuation. Different pricing structures exist and are also available if required.
Mono PERC is the most cost effective cell technology currently. Due to their prices dropping significantly and demands gaining traction, manufacturers have converted most of their production lines to mono PERC, driving the volume up and further reducing the cost.
Payback period may vary due to it’s dependence on the system size and future grid tariff. On average, the payback period ranges from 5 to 6 years.

Solar panels typically carry a product warranty of 12 years and a power warranty of up to 30 years. The power warranty may be step or linear. For performance warranty, typical guaranteed figures are 90% output power for the first 10 years and 80% for the next 15 years. For linear power warranty, typical figures are 2.5 to 3% power degradation in year 1 and not more than 0.7% power degradation per year from year 2 up to year 30.

Technical

Solar PV panels are made up of solar cells and like semiconductors, they are made of silicon. They are constructed with a positive layer and a negative layer, which together creates an electric field similar to a battery. When photons from sunlight hits a solar cell, they knock electrons loose from their atoms. Conductors are attached to the positive and negative sides of a cell, forming an electrical circuit. When electrons flow through, electricity is generated. Multiple solar cells make up a solar panel and multiple panels can be wired together to form a solar array. The more panels you can deploy, the more energy you can expect to generate.

Clouds reduce the intensity of irradiance falling on the solar panels. When calculating the energy yeiled of solar panel sysytem, we take cloud cover into account. We use the average irradiation on a sunny day(4.30-4.44 kWh/m2 per day) and average irradiation on a cloudy/rainy day ( 1-6.5 kWh/m2) in order to calculate the energy yield for a solar system.

We will install a meter where power generated from the system is injected into your electrical system. The data from that meter will be accessible and shared with you.
We design our system to last beyond 30 years.
Since Singapore’s latitude is only about 1 deg north of the equator, the panels just have to face flat and horizontal to receive incident sunlight. However, it’s good practice to tilt them at an angle of about 5 to 10 degree to promote self-washing by rain.
Cell efficiency refers to the conversion efficiency of the output power of one cell (typically 125 x 125 mm) whereas module efficiency refers to the conversion efficiency of an entire module (typically 60 cells or 72 cells).

Irradiation is the measure of sunlight energy over a period of time. For example, the typical average daily irradiation in Singapore is about 4.38 kWh/ m2. This is equivalent to a peak intensity of 1000 W/m2 or 1 kW/m2 for a duration of 4.38 hours or simply 4.38 peak sun hours (PSH).

The annual irradiation is Singapore was observed to range between 1580 to 1620 kWh/m2. This works out to average of between 4.32 to 4.44 kWh.m2 per day

Irradiance is a measure of the instantaneous sunlight intensity in W/ m2 . The peak irradiance occurs at solar noon at about 1 pm. On a sunny day, the peak irradiance is about 1000 to 1200 W/ m2
Solar monitoring is a package offered by us that allows us to observe the solar PV systems on our end for any downtime. If such issues are detected, we will reach out to you to rectify any issues so that you can continue to enjoy cleaner and greener energy from our systems.

Physical

In most cases, roof modifications are not required. Our team will assess your roof and when confirmed suitable we will make the necessary arrangements

We will provide a Defects Liability Period (DLP) of 1 year for all systems. Customers can choose to add on a 5 years preventive maintenance for the system when they decide to install the panels at a discounted rate. If they choose not to at this point, they are still able to buy the 5 years preventive maintenance afterwards, but at a non-discounted rate.
Typically, systems would require cleaning 1-2 times a year depending on your location.

Nope, SENE maintains and operates the system to ensure optimum performance.

We will replace the panel for you at no additional cost
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