Congratulations Er. Ajay Pratap Singh for such successful presentation & your plan towards making India a renewable solar energy hub. Today Er. Ajay Pratap Singh produced his presentation on NET Metering Policies & Associated Technical Issues: A Forward to Solar Roof Top Revolution @ Delhi Technology University/DTU with Prof. Dr. J.P Keshri, HoD, Mechanical Engineering, Coordinator M.Tech Renewable Energy, DTU. Read Ajay Pratap Singhs views on Solar Rooftop Grid Management & Market Forecast: As of Now, Nine Indian – Gujarat, Andhra Pradesh, Uttarakhand, Tamil Nadu, West Bengal, Karnataka Kerala and Delhi (newest Entry to This league) and Punjab have released a final distributed solar or net metering policy regulatory. it is expected that by 2021 All state would have net metering Policy. For a rapid growth of Distributed Solar Rooftop Segment and implementation of Net metering policy we need a better Grid management System as Described Grid Management System: Indian Grid Are designed to handle one source of power at sub feeder but with net metering System in place The grid Needs to handle Several Small Solar system along with one main source of power. This require Grid Management including Voltage Protection, Islanding and isolating Small Rooftop system integration with grid need necessary improvement in Local grid Distribution Network (Not in Transmission Network) that are: 1. Energy Balancing Due to sudden Mismatch in Demand and supply Load Shedding occur. If Distribution company couldn’t procure power power from National grid or Open Market it may engineer an intentionally power shutdown to balance Demand and supply. Even One Distribution Company can fix this issue by supplying Power through DG Set or utility scale storage, both are expensive solution. A better and technically advanced and shpsiticated route would be short term Demand and Energy generation (Supply) forecasting. Forecasting for conventional power are done on daily basis but for Solar power system it needs to be done more frequently ( i.e. Tracking down Cloud movement closely, Utility Forecast Better) 2.GRID Instability and Standard Issues related to Voltage and frequency fluctuations, unintentional islanding, reverse power flow, increased wear on utility equipment, and reactive power imbalances can be resolved by with the help of detailed connectivity standards and protection devices i.e. IEC-61850, which deals with various standards and protocols for interconnection of devices with the grid. It covers fast response times with respect to changes of the inverter’s power factor. India Needs to develop its Own Standard or adopt international standard 3.Net metering Implementation For net metering Conventional Electric bill meter needs to be replaced with Bi Directional Net Billing meter for Net –metering purposes .Same need to be done with conventional transformer relay which are designed to trip in case of reverse flow the cost of upgrading these both system may cost 5000 Rs/System 4.Evolution of Smart grid and green Corridors After 20 % grid Ceiling limit India need to invest in Smart Grid infrastructure .Smart grids deploy two-way digital technologies to deliver electricity with the aid of an intelligent monitoring system to track flows through the network. Smart grid systems can also incorporate a demand management system that monitors power consumption across households and automatically run nonessential items when generation from solar is high, in a bid to even-out load and combat intermittency. *In Sept 2012 while PM Man Mohan Singh was visiting Germany German Govt. has sanctioned a soft loan of 1.2 Bn $ for smart grid Development for distribute renewable energy project in India. We expect NAMO Govt. will work faster towards implementation of smart grid network in certain Key regions.... The Current rooftop Solar Market size is around 190 MW as compared to 2.8 GW of utility based Solar project This market is equally distributed between large Scale (> 10 Kw)and Small scale(< 10 Kw) Rooftop installation in which commercial segment has highest capacity due to high Grid Electricity tariff Out of 3 major group that are Commercial, Industrial and Home Rooftop Owners, Commercial rooftop owners pay highest tariff and so Solar Rooftop is more viable to them without any incentive. Industrial rooftop owners too opting for solar rooftop due to their high load requirement and enough spare rooftop Solar rooftop market has seen a growth of 85 % CAGR annually during the period of 2010-2013.It is expected to grow at 66% CAGR annually in next 5 years from 2013-18 assuming there will be net metering policy and some intelligent power management solution will be in place. Some more Indian state like Delhi has come up( August 2014) with its Net metering policy which is a good sign It is estimated that total 2300 MW solar rooftop installation will take place in next 5 years. Another study from KPMG has pegged a growth at a slightly higher level resulting 4-5 GW by 2016-17 Also according to a estimate the total rooftop realizable potential to be in the range of 57 GW – 76 GW ( Small Rooftop Realizable potential to be around 26-35 Gw by 2024 while large rooftop will be around 31-41 Gw by 2024)as compared to the total realizable solar Rooftop potential in India will likely be 110 GW to 144 GW by 2024 For commercial segment tariff Solar LCOE is viable in 4 state without any kind of incentive .With Accelerated depreciation benefit that is 80 %, commercial rooftop solar is viable in 9 state ( UP is 10th state Almost joining this league with recent 12% tariff hike in last week of September 2014). In state of Maharashtra grid tariff is 20 % higher than solar tariff for commercial sector. Poor grid Infrastructure and load shedding in various state and cities is putting pressure to go Solar The commercial tariff coupled with Diesel cost is on higher side in many state than grid electricity prices. A mere 15 % grid outing (1 Hour 50 Min in a Day) with AD benefit Make Solar Energy viable in more than 12 state. Per hour grid electricity absence would be resulted 1 Rs increase in coupled electricity prices (on basis on current Diesel prices For industrial sector Solar LCOE is viable in 4 State including Delhi, Maharashtra and Uttar Pradesh along with AD Benefit. Solar LCOE coupled with Diesel cost will be viable in almost 10 state with Ad benefit considering 15 % grid outing during day time (1 hour 50 Minute) LCOE = Levelised cost of Electricity .... Clean Energy Green Energy! Go Solar Go Green!
Posted on: Sat, 18 Oct 2014 16:28:02 +0000
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