27th
Nov 2017

Common problems in PV plant - Part 3

In our previous article "Common problems in PV plant - Part 2" we explained you the solar PV module specific problems which are evident on field after significant amount of time. All such problems lead to reduction in power output from the power plant. There are however few more problems leading to reduced power output from power plant. This article would try explaining you such additional but important (common) problems.

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21st
Nov 2017

Common problems in PV plant – Part 2

In our previous article “Common problems in PV plant - Part 1” we introduced the rapid growth and expansion of solar market. With the continued pace of expansion, there are problems which are bound to happen. The previous article discussed the common problems which are encountered during planning and installation of the solar power plant. This article shall educate you on the solar PV module specific problems which are evident on field after significant amount of time.

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12th
Nov 2017

Common problems in PV plant – Part 1

The solar PV market in India has seen a meteoric rise. The year 2016-17 has seen a double capacity addition (see Figure 1) and it is expected that India would add close to 10 GW in 2017-18 an approximate of 130% year on year rise. India is spread in huge lengths and breadths with varied weather conditionsat different places making it difficult to chooseideal spots (apart from few states) for solar PV plant installation. Additionally with the unprecedented growth of PV market the number of module, inverter, and Balance of System (BoS) suppliers have risen to huge numbers. While there is standardization and certification at (almost) each and every vertical, the solar PV power plant still encounters many problems on daily basis. This article aims to educate its reader on the common problems encountered at (both rooftop and utility scale) PV power plant.

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06th
Nov 2017

What happens in Rooftop site survey?

Rooftop market in the year 2016-17 has seen a Y-o-Y growth of around 81%. It is also expected that the rooftop market shall add over 2 GW by 2019 and over 3 GW by 2020. Additionally rooftop solar power plant (as we mentioned in our earlier article "40 GW from rooftop PV by 2022 still a myth!”) have added advantages over utility scale power plants. With such huge numbers of rooftop capacity being added annually, it is important to understand how we install a rooftop solar plant. The rooftop of the each consumer (where the solar PV system is installed) is different and it hardly occurs that the two different roofs have same conditions. There is no standard (system) solution which can be provided to the consumer which makes the need to survey the rooftop to determine various parameters before even proposing a solutionto them. This article aims to educate the readers on the basicsof the rooftop site survey and the parameters which need to be considered and/or recorded during the survey.

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31st
Oct 2017

Orientation & Positioning of solar module

With the latest quoted tariff of Rs 2.65per unit energy from solar energy in Gujarat post Goods and Service tax (GST), it seems that price close to Rs. 3/kWh from solar energy would be a new normal. Such low prices would mean that the developers (of the power plant) need to have the entire system and its applicable parameters optimized for maximized energy output to ensure their maximum profitability. The solar PV modules are heart of the power plant and in order to generate maximum energy it needs to be positioned at an optimum location. Any variation in the placement (in terms of orientation and inclination) may lead to loss of energy (and hence money) which may inturn damage the modules (due to differential output within modules) in long run. It is hence important to understand the placement of solar module in the power plant.

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26th
Oct 2017

Introduction to floating PV plant

Renewable energy sources are of prime importance as they would power our future. Solar energy power plant which utilises the sun’s energy needs adequate space for installation. It is a well-known fact that out of the 510 million Km2surface area of earth, a mere (appx.) 29% is covered with land. Additionally (at some locations) the land may be of importance and it may not be feasible to dedicate (some) space for solar energy power plant. In a country where cities are dense and agricultural land is limited, installing solar power plant (which require huge swathes of land) may not be viable.

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15th
Oct 2017

40 GW from rooftop PV by 2022 still a myth!

Solar rooftop potential

India has played an active role when it comes to deployment of renewable energy sources. It has played a leading role in forming the International Solar Alliance (ISA)with the prime objective to focus on utilization of solar energy. Additionally, India itself has set an ambitious target of 100 GW from solar power by 2022 which is divided into 60 GW of utility scale plants and 40 GW of rooftop scale plants. While the uptake of utility scale solar power plants has increased, the solar rooftop market whose installed capacity stands at mere 1,396 MW at the end of March 2017 is yet to see the light of the day.

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11th
Oct 2017

Feasibility of Utility and Rooftop Scale PV Plants in India

Utility scale solar powered plants

In the recent years utility scale power plants have seen a major boost in India. India currently boasts close to 13 GW of power from utility scale solar energy plants. The western states of India are blessed with adequate solar radiation compared to the other states. Hence, such states form a prime spot for installing large scale solar power plants or utility scale solar power plants. With governments push to set up atleast 50 solar park of (minimum) capacity of 500 MW, utility scaled solar power plants shall be set up within all the states in India. These plants can promptly fulfil Renewable Purchase Obligation (RPO) of the utilities while powering the grid with clean and green energy. Further this shall also enable the country to meet its target of 60 GW by 2022.

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09th
Oct 2017

Is bifacial the new face of PV?

India, due to its widespread in geography can be viewed as a nation where vivid range of weather condition exists simultaneously. With such varied conditions the albedo (the ratio of reflectivity of light from a surface to the incident light) is expected to vary from place to place. In power plants where mono-facial (single sided) solar modules are usedthe reflected light from the ground merely increases the internal temperature of the module (generally) resulting in lowered performance. Hence, the need of effective utilization of such reflected light can be clearly felt. This is where bifacial solar cell (and module) comes into play.

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08th
Oct 2017

Significance & Reliability of PV + storage

The solar PV market in India has seen a meteoric rise. The year 2016-17 has seen a double capacity addition (see Figure 1) andit is expected that India would add close to 10 GW in 2017-18 an approximate of 130% year on year rise. However solar PV generation is highly intermittent in nature. Figure 2 shows the cumulative generation curve of solar PV plants in Gujarat. It is clearthat the solar energy can power the loads only during daytime. This limits the usage of solar PV plants at night reducing its reliability. Hence it is important to explore alternative solutions which would enable total reliability to solar PV.

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29th
Aug 2017

Power of Photovoltaics

बृंहितं तेजःपुञ्जं च वायुमाकाशमेव च ।
प्रभुं च सर्वलोकानां तं सूर्यं प्रणमाम्यहम् ॥

The closest translation of the above mentioned shloka from Suryashtakam is "O Sun, you are massively enlarged mass of fiery energy, which pervades everywhere like air and sky, I bow down to you O Sun, who is the Lord of all the worlds". The significance of solar energy has been known from centuries, but its utilization for energy generation only began from last few decades.Mankind has turned towards many different technologies for renewable energy, but it is the solar PV (photovoltaic) technology which has proved to be the most promising way of harnessing energy cleanly. A land area of496,805 sq.km (≈combined area of Maharashtra and Gujarat states of India)is enough to power up the whole world using the solar PV.So, don't be surprised if everything around you is powered by Solar in the near future.

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