If you live in Canada, what do you need to look for when installing solar panels and buying solar panels? Solar cells are devices that convert light energy directly into electricity through the photoelectric or photochemical effect. Thin-film solar cells, which work by the photovoltaic effect, are the mainstay, and how to buy solar cells is a problem for some people. Today, we will briefly introduce the knowledge about solar cell purchase, I hope it will be helpful to you, we will also talk about where to buy the best solar panels in canada in the next blog.
The solar cells currently on the market are divided into amorphous silicon and crystalline silicon. Among them, crystalline silicon can be divided into polycrystalline silicon and monocrystalline silicon. From the perspective of the photovoltaic conversion efficiency of the three materials is: monocrystalline silicon (up to 17%) > polycrystalline silicon (12-15%) > amorphous silicon (5% or so). But crystalline silicon (monocrystalline silicon and polycrystalline silicon) in the low light basically will not have current generation, amorphous silicon low light type good (in the low light energy would have been very little). So on balance, it is advisable to use monocrystalline silicon or polycrystalline silicon solar cell materials.
When we build our canadian solar panels system, the focus of attention is the power of the solar cell. Generally speaking, the power of a solar panel is directly proportional to the area of the solar wafer. The area of a solar cell wafer is not exactly the same as the area of a solar package panel, as some solar panels are large but the gaps in the solar wafer arrangement are wide, and the power of such solar panels is not necessarily high.
Generally speaking, is the higher the power of a solar panel the better, so that the current generated in the sun is high and can quickly fill its built-in battery. In reality, however, a balance needs to be found between the power of the solar panel and the portability of the solar charger. It is generally accepted that the minimum power of a solar charger should not be less than 0.75w. Sub-powered solar panels have a current generation of 140mA in standard bright light. In general sunlight produces a current of around 100mA, and if the charging current is too low below sub-power it will basically have no noticeable effect.
With the widespread use of various solar products, the use of solar cells in our lives is becoming more and more widespread. But in the face of the various types of solar cells on the market, how should we choose?
1、Selecting the capacity of the solar storage battery
As the input energy of solar photovoltaic power generation system is extremely unstable, so generally need to configure the battery system to work, solar lamps and lanterns are no exception, must be configured battery to work. There are generally lead-acid batteries, Ni-Cd batteries, Ni-H batteries, their capacity selection directly affects the reliability of the system and the price of the system. The choice of battery capacity generally follows the following principles: firstly, to meet the premise of night lighting, to store as much energy as possible from the solar modules during the day, but also to store the electrical energy needed to meet the continuous rainy days and night lighting. The battery capacity is too small to meet the needs of night lighting, the battery capacity is too large, on the one hand, the battery is always in a state of power loss, affecting battery life, while causing waste.
Besides, Energy storage lithium batteries are a highly efficient way of storing energy for balancing the load on power systems and storing unstable energy sources such as solar and wind power. Energy storage lithium batteries are promising for a wide range of applications, from individual homes to large power systems.
Individual storage lfp lithium batteries (lifepo4 lithium batteries) can be used to store solar and wind energy for domestic use, or as a backup battery in caravans, marine or outdoor camping life. When solar and wind energy is plentiful, Li-ion storage batteries can store excess power for emergency use. This reduces reliance on conventional electricity and lowers energy costs.
2, the choice of solar cell packaging form
At present, there are two main forms of solar cell packaging, lamination and drip glue, lamination process can ensure that the working life of solar cells more than 25 years, drip glue, although beautiful at the time, but the working life of solar cells only 1 ~ 2 years. Therefore, for low-power solar lawn lights under 1W, if there is no high life expectancy requirement, the drip-lamination process can be used. In addition, there is a silicone gel for drip encapsulating solar cells which is said to have a working life of up to 10 years.
3, the choice of solar cell power
The solar cell output power Wp we are talking about is the output power of the solar cell under standard solar lighting conditions, i.e.: 101 standard as defined by the European Commission, radiation intensity 1000W/m2, atmospheric mass AM1.5, battery temperature 25°C. This condition is approximately the same as the usual sunlight conditions around midday on a sunny day, which is not the rated output as some people think, as long as there is sunlight, or even think that solar cells can be used normally under fluorescent light at night. This means that the output power of solar cells is random and the output power of the same solar cell is different at different times and in different locations. With solar light information, between aesthetics and energy efficiency, most choose energy efficiency.
4.Can I install solar power system in Canada?
First of all, Take Toronto as a example, the answer to putting up solar is yes, and it’s supported!
So surely some of you are wondering why you haven’t seen a few roofs with solar on them? This is indeed also a pity, Toronto’s winter is cold but the light is not short at all. 2️⃣ You can see the light hours, Ontario light hours are considered long.
With such good solar conditions, the statistics at the beginning of the year in Canada, only 40,000 homes were installed with solar. The reason for so few is also rather straightforward – the initial investment for installation is too high.
Normally, the installation of solar energy requires an investment ranging from 1W to 3W, so a conservative estimate is a return of 15-20 years based on the cost of electricity. With such a low rate of return and no advantage given when selling the house, people choose not to go for the toss. There are plenty of older homes, but in Toronto most of them are not lived in by the first buyer all the time, so you may have changed homes before solar starts to pay off, so the number one thing about investing in solar is: live in it for a long time.
With Canada’s plans for green energy evident at the start of this year, it’s only logical that solar, as a clean energy source, would be included in the mix. There is a $5,000 green energy discount that can be applied for right now. There is also a tax credit of up to 30% for tax residents, depending on the province, which will disguise some of the initial investment costs. The previous large scale solar installations were between 2003-2016, when the FIT support program for solar energy was in place. If Canada’s focus on clean energy continues, solar will become a priority again and will be chosen by more households.