Q. What products are related to solar power use?
Ans: Solar water heater , Solar cooking range , Solar off grid systems ( hybrid), Solar On grid systems , Solar compensation system ( battery less) , Solar Street lights Solar fencing , Solar pumps , Solar A/c ( air conditioner ) . Heat energy and light energy from Sun can be utilized for the benefits of mankind.
Heat energy from Sun is used to heat the water for residential purpose and industrial purpose. ETC (Evacuated tube collector) technology is using glass tube to absorb heat from Sun and to transfer it to the water flowing through it. FPC ( Flat Plate Collector ) technology is using metal pipes either copper, aluminum or stainless steel . Copper pipes are widely used now a days for FPC technology. Light energy from Sun can be transferred to electric energy by using Solar panels.
Q. Which are the best solar companies?
Ans: Green Power Village Sunsez Go Green Solar LLUMINE Energy Solutions Murickens Group.
Q. Does a solar panel produce AC or DC?
Q. What are the main disadvantages to solar energy?
Ans: Solar energy is available only during day time. Solar panel requires large space Power production level varies from morning in minimum level to noon at maximum level then again will reduce till evening.
Q. How do I choose a solar company?
Ans: Solar systems comprises of Solar panel, solar inverters (PCU- power conditioning units) and batteries. These products are manufactured indifferent categories of company manufacturing setups and none of them produce all three or none of them are into installation projects.
So customer has to choose an installing EPC company. Mainly should vigilant on the warranty. if the warranty is from manufacturing company, customer is not in safe zone since installer will escape during warranty claims, and the customer should face difficult time to establish his claims with manufacturing companies at different counties. Customer will be in safe zone incase installer can provide warranty for the products. After sales service capability of installer is major concern today. Many installers are good in sourcing materials and completing instaltions, but fail to withstand pressure on after sales service managements. So many beginners will wind up their installations companies by maximum 3 years. So an intelligent customer should select an installing company which is in the market for minimum 10 years
Q. Does solar panels work with Moonlight?
Ans: YES, but production will be at very low rate …A panel capable of producing 3450W during noon day time will produce only 10w during full moon at night.
Q. Can a house run on solar power alone?
Ans: Yes , for this stand alone systems with more panels and more backup batteries are required depending on the load and consumption periods.
Depending on customer requirements an optimum configuration can be designed. A perfect design will eliminate excess solar panels and excess batteries and will reduce the customer budget accordingly.
Q. Do solar panels work at night?
Ans: While sleep we are alive, like this solar panel produce very less as per the light availability from moon etc….it is as same as not working.
Q. How many solar panels are needed to run a house?
Ans: Depend on the load we have to install panels. For connecting lights, Fans and TVs only we can install 200 w to 300 w panels..While electrical loads increases, we have to install more panels accordingly.
Q. Are solar panels bad for your roof?
Ans: If the roof is strong enough to hold the weight of the panel and wind energy, there will not be any issues. Normally concrete roof, tress work roofs are good enough. Roof with mud tiles over wooden structure and leaf roofs are not good enough to install solar panels.
Q. Is solar power viable?
Q. Technically electrical loads can run by solar , commercially the solar system is viable for customers having electricity bill over rs 1500.
For person having rs 4000 -6000 electricity bill , the breakeven point will be 6 to 7 years.
PM MODI INAUGURATE ASIA'S LARGEST SOLAR POWER PLANT IN MADHYA PRADESH DATE : 10/07/2020
The Rewa Ultra Mega Solar power project-set up in Gudh of Rewa and spread over 1590 acres of land is one of india's most ambitious solar power projects.PM Modi who inaugurated the plant on july 10 morning dedicated the Rewa solar power project to the nation.
In an address to the nation,PM said "Solar energy is going to be a major medium of energy needs not only today but in the 21st century,Because Solar energy is sure pure and secure".
"Today , Rewa has really scripted history.Rewa is identified with the nme of mother Narmada and white tiger,Now the name of Asia's largest solar power project has also been added to it".
Asia's largest solar power project Details
• Rewa ultra Mega Solar Park with a capacity of 750 MW ws fully operational by july 2019.
• The REWA park with its innovative power purchase agreements demonstrated an excellent example of a win-win situation by removing developer risks by offering payment guarantees.
• The Rewa Ultra Mega Solar Limited (RUMSL) is a joint venture of Solar Energy Corporation of India(SECI) and Madhya Pradesh Urja Vikas Nigam Limited(MPUVN). • According to the Financial Express,an amount of RS 138 crore has been provided by the centre to RUMSL for the development of solar park.
• The government has said that it will reduce emission equivalent to approximately 15 lakh tonne of carbon dioxide every year with the Rew Solar Project.
• The project caught global attention by landing a record low - binning bid of RS 2.97 per kilowatt-hour(KWH) in 2017 in the country through intelligent risk distribution.Since then, it has become an anthem for india's clean energy evangelists.
• The project is the first renewable energy project to supply to an institutional customer outside the state ,the Delhi Metro Rail Corporation(DMRC).
• It will get 24% of energy from the project with the remaining 76% being supplied to the state discoms of Madhya Pradesh.
KERALA ELECTRICITY POWER TARIFF UP BY 11.4% FOR DOMESTIC USERS
Thiruvananthapuram : The State electricity regulatory commission announced a revised power tariff on Monday, raising the cost of power across sectors by 6.8% and 11.4% for domestic consumers. Under the new tariff regime, which come into force on Monday itself, the maximum increase per unit is 40 paise and the minimum is 25 paise.
The new tariff also brought a substantial increase in fixed charges for domestic consumers, based on their monthly consumption. “The commission has taken extra care to avoid a shock for consumers.The average increase is given to KSEB for energy charges is nominal 30 paise for all consumers . The fixed charges have also been revised avoiding a burden on consumers whose usage on the lowerside,” commission chairman Preman Dinarajan said.
The tariff hike for small scale industries is 5.7%, big industries 6.1%and commercial establishments 3.3%. For domestic consumers consuming less than 250 units, the fixed charges will go up from Rs 80 to Rs 100 for three-phase connections.The rise for single-phase connection is, however, threefold.
The increase in tariff encourages the customers to think on Solar power systems.Many are choosing ON-GRID solar system . But this system will not work while KSEB line is off for any reasons.
By choosing OFF grid systems , if customers can manage to avoid KSEB atleast during peak hours, the they can reduce the electricity bill substantially.
KSEB ROOFTOP SOLAR PLANT PROPOSAL IS GETTING CANCELLED
Trivandrum : Revenue department objected the proposal for rooftop solar plant by KSEB.The board meeting conducted last week decided to cancel the project declared by additional chief secretary,He proposed that let the people do the project by themselves.If the revenue department don’t change this decision,then the dream project anxiously waiting by the people will get cancelled.In the board meeting additional chief secretary attented as Govt representative.KSEB department called for first tender for rooftop solar project for producing 200 MW.Above 2.8 lak of people applied for this project.The plan was to install solar power plant above rooftop of houses,schools,hospitals and Gvt buildings.
By 2021 KSEB should produce 1000 Mw solar electricity.In this 500 Mw is expected from solar rooftop power plant project.These type of unstable decisions and offers by Gvt and KSEB is holding back the initiatives of people to do such projects by themselves which is incurring unnecessary delays for new projects and financial benefits of people.And this type of unmatured project concepts is wasting valuable productive time of the people.If the climate change remains in this condition,there is a chance for increasing in KSEB electricity bill and for more power cuts .
ON GRID PLUS POINTS
• No Need For Battery
• All tapped energy is exported to KSEB, even if customer is away from home.( while KSEB is ON).
• Low investment as battery cost is eliminated.
ON GRID NEGATIVE POINTS
• Need sanction from KSEB
• IF KSEB line is OFF all tapped energy is wasted since no exporting occurs.
• KSEB policies can change at any time as per the KSEB board. So unit adjustments and tariff paying back can change, favoring not to customer.
• In case of any fault occurrence, KSEB interferences at AE level is required to download all parameters in the inverter and to proceed further on rectification process .
• Only 15 % of transformer capacity will be allowed to export to that transformer, so 4 to5 people under that transformer only will get feasibility sanctions from KSEB.
• In future peak calculations will be implicated, so 5pm to 9pm will considered as peak time, and for this peak time tariff rate will be almost three times. Customer exporting is on non peak hours. In short customer will export on low price and will import on high price.
• For exporting the KSEB line voltage should be between 192 v and 264 v, so incase of low voltage or high voltage, exporting will not occur.
• For three phase connection, all phase should be on and should not be in low or high voltage condition.
• In case of fault at Net meter, the electricity to home will resume only after replacement of net meter. Buying new net meter, testing it and getting approval from KSEB will be under the responsibility of customer. At this stage we can’t predict the time /days required to complete this task. We expect KSEB to take appropriate solution for this.
• So for residential customers, who can manage to replace the battery after expected life time, best is to select OFF GRID system with battery, to cover the peak time .
• Maintaining OFF GRID inverter is much simpler than ON GRID inverter.
• After sale support is required for the solar system even after the warranty period, so should select a vendor who is expected to be at market for such long time, who is capable of modifying even the software.
MERITS AND DEMERITS OF SELLING SOLAR ENERGY TO GRID (K S E B) IN KERALA
The recommendation of the Regulatory Committee and the decision taken by the K S E B for purchasing the excess Solar Energy from Private sector is a very good decision. Similarly the Board should take all initial precautions like safety, loss or damage etc but we are very sorry to say that the Board is not bothered about any such loss or damage till date.
For the success of this Project, first of all we need a fresh Distribution system, Installation, Cabling and Metering etc on grid line. We can transfer the excess Solar Electricity to Grid, only when the Grid Line is alive otherwise the Generated Solar Energy will not be distributed to the Grid ( K S E B ) Line.
When we are supplying excess solar energy to Power Grid line that should be result oriented. But in Kerala this Project is not hopeful to succeed in the near future because in the “ GODS OWN COUNTRY” all days and nights of every season the Power cut is a course to each and every citizen of Kerala. When we are facing the power cut at night we are in darkness and this is the main drawback of this Project which is being used for residential purpose. In this case we need a storage backup facility with which we can survive. For the success of the Solar Power Generating System, we need to follow some of the main instructions like checking the Technical Specifications of the Solar Inverter and a competent technical installation guideline.
In the previous year the Central Government has announced a Subsidy for the Solar P V application for the implementation and distribution, but later this has been withdrawn by the Govt. Not even a single political party or leader has raised any question regarding the withdrawal of the subsidy for the Solar P V Application and hence we humbly request to have a rethink regarding the above subsidy.
SOLAR WATER HEATER SUBSIDY
The Central Govt. Subsidy for Solar Water Heater Manufacturing & Trading is facing a Critical Condition which is under Hold. The Amount of Subsidy under hold is around Rs.350-Crores.as per Solar Thermal Federation of India. This subsidy is sanctioned by Jawaharlal Nehru National Solar Mission to the Solar Water Heater Manufacturers. For every Unit the Subsidy Amount is 30%. In the F Y -2012-13 it was 50- Crore, and the last year it was 300-Crores which was not distributed by the Ministry till date.When there is a Business Volume of 800-Crores, the subsidy Amount is Rs.350-Crores.as per Federation Secretary General Jaidev Malviya.The increased tendency of Public towards Solar Water Heater, Subsequently the sale may also increased this year. In this Condition the Subsidy amount will met an Amount of Rs.500-Crores. If this Condition is continued, We afraid that this may cause an END to the Solar Water Heater Industry.
Kerala State to mainstream use of solar energy
The Cabinet on Wednesday approved the Kerala Solar Energy Policy aimed at mainstreaming the use of solar energy in the energy mix of the State. The policy proposes to increase the installed capacity in the solar sector to 500 MW by 2019 and 2,500 MW by 2030. Various incentives are proposed to promote the use of solar energy. The plans include promotion of offsite generation at locations such as canals, reservoirs, wastelands and quarries besides off-shore generating plants.
A) Off-grid applications
Off-grid solar applications shall be promoted for replacing diesel-based generator sets. Interventions will also be made for establishing rooftop system at demand points or consumer premises and promotion of conversion of existing inverter installation to solar power. The State will also promote solar water heating system by making its use mandatory in industrial buildings, hospitals, hotels, housing complexes, hostels, barracks and jails, guesthouses, and similar buildings. It will also promote solar steam systems for wider applications such as community cooking, process industries and laundries, and industrial processes requiring steam. Use of solar power and water heater will be made mandatory for residential flats, buildings with floor area of more than 2,000 sq ft. For off-grid systems, the policy seeks to ensure bank finance at attractive interest rates and provide generation-based incentives. For grid-connected systems, the government itself will set an example by setting up generation facilities in public buildings. The policy urges all concerned to make use of rooftop and premises to install solar plants to match maximum demand of the offices within two years. For grid-connected systems in non-government buildings and premises, incentives will be provided on the basis of net metering, feed-in-tariff, and renewal energy certificate mechanism. Since large-scale absorption of solar power into the system is impossible without sufficient storage, a programmed for exploring and developing pumped storage schemes will be promoted. For evolving safety and quality standards, capability of academic institutions both within and outside the country will be leveraged. The policy also proposes licensing for manufacturers and all solar photovoltaic systems to be installed in the State. Solar procurement obligation will be mandated for commercial consumers with more than 20kVA of connected load.
B) REGULATORY FRAMEWORK
The policy will be extended to other industrial consumers in a phased manner. At a later stage, similar conditions will also become applicable for high consuming domestic consumers. The legal and regulatory framework that will come into force following implementation of the policy is to mandate 100 litres solar water heater and 500 W solar photovoltaic systems for domestic building with floor area of between 2,000 sq ft to 3,000 sq ft.All buildings above 3,000 sq ft will have to install a 100-litre solar water heater and at least 1,000 W solar photovoltaic system. In case of residential flats and apartments, five per cent of the energy usage for common amenities should be from solar power.
Q.What is the difference between a solar inverter and a normal inverter?
1. A solar inverter works absolutely on solar power ie., sun light. Whereas a normal inverter works with the current from the grid power. ( to charge the battery while In solar inverter uses sun rays and have the provition to charge using grid power in critical situation )
2. A solar inverter can give more backup time however, a normal inverter gives a full load back up of only 2 to 3 hours.
3. Solar inverter comes with good advanced security features than the normal inverter.
Q. Can you explain the major advantage while installing a solar inverter instead of normal inverter?
Ans : The major advantage is stated below:-
A normal inverter is charged from grid power and it is AC current. While using, AC current is converted into DC current and there will be conversion loss. The conversion is required from ac to dc and the output energy we get is half of what its used in storing in battery. In solar inverter system panel generate dc current while it using to charge the battery there is no conversion loss so we get full efficiency i.e. we get 2 way saving like we can avoid the conversion energy loss and get solar energy free of cost.
Q. Can I convert my existing normal inverter to solar power?
Ans : Yes, you can manually convert the existing UPS or inverter to solar power with some conditions. Before conversion please contact for the technical support for what capacity, model of the panel and the charger should be used for the existing system.
Q: What are included in solar power plant installation ?
Ans:Solar Inverter/UPS for conversion from DC to AC , battery pack for backup of the excess current, solar panels for power generation.
Q. What is the average current generated by the solar?
Ans: The amount of electricity that you can generate depends on the size of system, which way it is facing, whether there is any shading from trees or other buildings and the local climatic conditions. Normally in Kerala climate the average entire year per day calculation is 1000 W Solar panels can create between 4 to 4.5 units electricity per day.
Q. Can the solar work on rainy or cloudy or in winter ?
Ans: Yes, it can, but its efficiency will reduce to produce the electricity and the usage of home appliances will be also reduced during these periods too compared to the sunny days of summer.
Q. Can we give solar connections to house hold items like AC, Washing Machine, Fridge, Water pumps etc?
Ans: Yes, we can give the connections but you have to select the right kind of solar system to power that kind of load.
Q. How is the load calculated?
Ans: The load is calculated by using a simple formula i.e. list out all the house hold items and its current consumption including starting current and by totaling consumption, we get the total amount of the load.
Q. How to decide which type of solar installation is required in homes?
What all precautions are to be taken when considering to install a solar in our home?
Ans: Firstly decide what type of load you are going to give to the solar power plant viz. light or heavy. A place to keep the inverter and battery pack. Panel space availability and that side gets enough sun light. If you need only light load power - give separate wiring it increases efficiency and less distribution loss.
Q. Which all parts of solar panel system are serviceable?
Ans: Yearly Check the battery water level . If the water is less then refill it and also clean the spilled water that has fallen on the battery to avoid any mishap. The panel should be cleaned for any type of dust that is there on it .Use the load that is prescribed in the system configuration for efficient working of the system.
Q. For a new house which is the decision making time? Is it when the construction has begun or after construction, and how to make judgment on whether structural changes or electrical works are needed or not?
Ans: No major structural or electrical works are needed. But if less load is preferred then you need a separate wiring or if the load is of heavy one there is no need of separate wiring. But in DC wiring length from solar panel to solar inverter - make sure that the wiring should have less bends and length should be less so that the distribution loss can be minimized and efficiency of the system will be more.
Q. For optimum efficiency, which side the solar should be kept and why?
Ans: It should face south direction so as to get maximum sunlight and so that the panels are in 90 degrees perpendicular to the sun rays.
Q. How much solar subsidy by kerala and central governments can a consumer get in kerala?
Ans: This was for the limited number of solar installations to be done in kerala by the government. The consumer can get about 30 percent of the total cost by central government and the state government gives 30% for 1KW system. But as of now the Kerala government quota for the solar installation is over.
Q. How a solar panel can be installed in house, in roof top or on ground and which is the best?
Ans: It can be installed on rooftop or ground. There should be sufficient sunlight in the place of installation, but in India, it’s recommended to setup the panels on the rooftop to save space to get more sun rays.
Q. Is battery required or not in solar power plant?
Ans: If installing in a house then the battery pack is necessary for backup purpose, but if it’s installed in a commercial place, functions in day time only then the battery pack is not required.
Q. When selecting a solar panel installer, what all things we should consider?
Ans : 1. Deal with an experienced company.
2. Find out the reliability of the company.
3. Avoid purchase from dealers and retailers. If you are willing, have a contact with the manufacturer and check their service support if any failure happens.
Q. Can you say approximate solar inverter cost ?
Ans: Price of the Solar inverter is depend up on quality , capacity/power of inverter, capacity of battery, type and watts of solar panel we use. Over all cost is based on back-up of solar power we needed. An average cost is 1 Lakhs / KVA