New Regulations in Tamil Nadu for Wind and Solar Energy.
<p>The Tamil Nadu Electricity Regulatory Commission (TNERC) has issued regulations for forecasting, scheduling, and deviation settlement for wind and solar energy generators in the state. Titled the "Tamil Nadu Electricity Regulatory Commission (Forecasting, Scheduling and Deviation Settlement and related matters for Wind and Solar Generation) Regulations, 2024," these rules came into force on 01-04-2024. The objective is to facilitate grid integration of wind and solar energy while ensuring grid stability and security. The regulations define key terms, outline the extent of applicability, and establish a framework for managing deviations and settlements among various stakeholders.</p><p>?</p><p>TNERC regulations mandate forecasting, scheduling, and deviation settlement for Wind and Solar Energy Generators in Tamil Nadu. SLDC considers forecasts for operational planning, utilizing conventional units and tie-lines for integration. Applicable to all generators connected to the intra-state system. QCAs appointed for forecasting and scheduling activities. SLDC issues notices for QCA appointments; failure results in deviation charges. Responsibilities of QCA include aggregation, de-pooling, and real-time data provision. The code specifies methodologies for scheduling and deviation treatment. SLDC may also forecast Wind and Solar energy generation. The regulations will be reviewed by the Commission every two years.</p><p>?</p><p><strong>Summary:</strong></p><p>?</p><p>The regulations delineate guidelines for forecasting, scheduling, and deviation settlement for Wind and Solar Energy Generators in Tamil Nadu. Notable points include:</p><p>?</p><p><strong>Forecasting and Scheduling Code:</strong></p><p>? - Detailed schedules for Day-Ahead and Week-Ahead.</p><p>? - Revisions permitted with prior notice.</p><p>? - SLDC to present Detailed Procedure for approval.</p><p>? - Guidelines for adherence, penalties for manipulation, and QCA roles.</p><p>?</p><p><strong>Principles of QCA Appointment:</strong></p><p>? - Generators designate QCAs for scheduling, with choices for a single QCA for the state or specific sub-stations.</p><p>? - SLDC's forecast option is available.</p><p>?</p><p><strong>Deviation Settlement for Intra and Inter-State Transactions:</strong></p><p>? - Deviation charges for under/over injection of wind/solar power.</p><p>? - Distinct settlements for intra and inter-state transactions.</p><p>? - SLDC calculates and discloses monthly deviation statements for scrutiny and payment.</p><p>?</p><p><strong>QCA Aggregation and Communication:</strong></p><p>? - Single QCA aggregates wind/solar generation for the entire state, providing separate schedules for each to SLDC.</p><p>? - Pooling sub-station-wise schedules shared with SLDC.</p><p>?</p><p><strong>Alternative Aggregation:</strong></p><p>? - If aggregating for the entire state is challenging, QCA can submit schedules for individual pooling stations.</p><p>? - Deviation charges calculated separately for each pooling sub-station.</p><p>?</p><p><strong>Schedule Reference and Charges:</strong></p><p>? - QCA supplies SLDC with a schedule based on its forecast, acting as a reference for deviation determination.</p><p>? - If QCA adopts SLDC's forecast, it bears consequences of any resulting deviations.</p><p>? - Charges for QCA services agreed upon mutually between QCA and generators.</p><p>?</p><p><strong>Forecast Submission:</strong></p><p>? - QCA provides Day-Ahead and Week-Ahead schedules for SLDC, considering statewide aggregation.</p><p>? - Internally maintains schedules for each pooling sub-station.</p><p>?</p><p><strong>Regulation Details and Compliance:</strong></p><p>? - Detailed procedure to be submitted by SLDC covering various aspects (registration, communication, compliance, penalties).</p><p>? - Commercial impact of deviations borne by generators.</p><p>? - State entities adhere to Indian Electricity Grid Code and Tamil Nadu Electricity Grid Code.</p><p>? - Strict measures against gaming, intentional mis-declaration, and penalties.</p><p>?</p><p><strong>Principles of QCA Appointment:</strong></p><p>? - Generators appoint QCA for the whole state, specific sub-stations, or opt for SLDC's forecast.</p><p>? - Majority-appointed QCA deemed for all generators in a pooling sub-station.</p><p>? - Appointment within one month of SLDC intimation, failure subject to stipulated conditions.</p><p>?</p><p><strong>Deviation Settlement:</strong></p><p>? - Intra-state transactions settled based on actual generation; provisional charges applied monthly.</p><p>? - Different deviation charges for wind and solar.</p><p>? - De-pooling undertaken by QCA against each generator.</p><p>? - SLDC oversees monthly settlement; deviations due to forced shutdown exempted under specific conditions.</p><p>? - Inter-state transactions follow CERC regulations with separate schedules and settlements.</p><p>?</p><p><strong>Deviation Accounting:</strong></p><p>? - Separate accounting for inter and intra-state deviations.</p><p>? - SLDC computes and bills monthly intra-state deviations; inter-state transactions detailed on SLDC website.</p><p>? - QCA/generators make payments to the state deviation pool account.</p><p>?</p><p><strong>Meter Replacement:</strong></p><p>? - Licensee to replace defective meter within 30 days; charges adjusted in generator's monthly bill.</p><p>?</p><p>- Generation Readings and Deviation Reporting (10.3-10.5):</p><p>? - SLDC provides monthly 15-minute block generation readings to QCA.</p><p>? - QCA consolidates SLDC readings, compares with scheduled generation, and reports monthly deviations.</p><p>? - Deviation charges calculated by SLDC based on scheduled and actual generation.</p><p>?</p><p><strong>Hybrid System Metering:</strong></p><p>? - Hybrid system (wind/solar) requires separate metering; deviations treated independently.</p><p>? - Metering follows Central Electricity Authority Regulations.</p><p>?</p><p><strong>QCA-SLDC Communication:</strong></p><p>? - Detailed Procedure outlines QCA-SLDC communication protocols.</p><p>? - SLDC equipped with IT-enabled platform; QCA provides login for live data access.</p><p>? - Communication covers schedules, deviations, grid constraints, and more.</p><p>?</p><p><strong>Deviation Accounting Methodology:</strong></p><p>? - SLDC computes Absolute Error for statewide, pooling sub-station, and generator-wise deviations.</p><p>? - Deviation charges impact on Wind and Solar Energy maintained separately in State Deviation Pool Account.</p><p>?</p><p><strong>Payment Mechanism and Security:</strong></p><p>? - Generators pay monthly deviation charges based on actual generation.</p><p>? - Provisional payments through Distribution Licensee; delay incurs 0.06% daily interest.</p><p>? - Year-end reconciliation adjusts excess or shortfall without interest.</p><p>? - Delayed payment beyond 12 days may utilize State Deviation Pool Account balance.</p><p>?</p><p><strong>De-Pooling of Deviation Charges:</strong></p><p>? - QCA de-pools deviation charges against each generator in proportion to actual generation.</p><p>?</p><p><strong>Curtailment Intimation:</strong></p><p>? - SLDC communicates curtailment in emergent situations; no deviation charges.</p><p>? - QCA notifies generators for planned curtailment; SLDC revises schedule if not amended.</p><p>?</p><p><strong>Energy Accounting:</strong></p><p>? - Energy accounting based on interface meters; monthly accounts prepared by QCA.</p><p>? - SLDC provides processed data monthly; discrepancies corrected within 15 days.</p><p>? - Billing center handles energy accounting, adjustments, and settlement as per SLDC procedure.</p><p>?</p><p><strong>Miscellaneous Provisions:</strong></p><p>? - Commission empowered to amend regulations, relax provisions, and issue directions.</p><p>? - State Power Committee established for coordination, compliance monitoring, and regulatory guidance.</p><p>? - Repeal and savings clause for previous regulations.</p><p>? - Provision for resolving difficulties and power to relax regulations.</p><p>? - Commission authorized to issue orders and directions for regulation implementation.</p><p>?</p><p><strong>Explanatory Statement (Explanatory Statement):</strong></p><p>? - Explanation of the need for the new regulations, referencing previous regulations and changes in Central Commission regulations.</p><p>?</p><p>?</p><p>The new regulations, Tamil Nadu Electricity Regulatory Commission (Forecasting, Scheduling, and Deviation Settlement for Wind and Solar Generation) Regulations, 2024, replace the previous ones from 2019. The key changes include:</p><p>?</p><p><strong>Deviation Charges Calculation:</strong></p><p>? - Formula for deviation charges adjusted; now based on the highest of weighted average Area Clearing Price (ACP) from various market segments for a given time block.</p><p>?</p><p><strong>Error Percentage Definition:</strong></p><p>? - Error percentage calculation modified for better realism.</p><p>? - Absolute error percentage now based on "Scheduled Generation" instead of "Available Capacity" to ensure accurate deviation assessment.</p><p>? - Central Electricity Authority suggests considering "Available Capacity" but Commission caps deviation charges at a minimum to protect Renewable Energy (RE) generators.</p><p>?</p><p><strong>Technological Advancements:</strong></p><p>? - Improved forecasting technology for wind/solar energy since the introduction of previous regulations in 2014.</p><p>? - Developers are expected to be more accurate in forecasting.</p><p>?</p><p><strong>Purpose of Deviation Settlement Mechanism:</strong></p><p>? - Emphasis on the mechanism's purpose: accuracy in forecasting RE power to enhance grid management.</p><p>? - Aims to instill discipline among RE generators for better load management and grid frequency adherence.</p><p>?</p><p><strong>Protection of RE Generators' Interests:</strong></p><p>? - No deviation charges for forced curtailment instructed by SLDC.</p><p>? - Separate "detailed procedure for management of RE curtailment" to be issued to safeguard solar/wind generator interests.</p><p>?</p><p><strong>Absolute Error Percentage Formula Endorsement:</strong></p><p>? - Commission supports the formula for Absolute Error Percentage in the interest of all stakeholders.</p><p>?</p><p><strong>Single QCA Selection:</strong></p><p>? - Proposes a single QCA selection for statewide aggregation to simplify implementation.</p><p>? - Maintains the option for solar/wind generators to choose QCA at the Pooling Sub-Station level based on majority principles.</p><p>?</p><p><strong>Regulation Framing and Ceiling Rates:</strong></p><p>? - New regulations framed to accommodate changes in technical, commercial, and implementation mechanisms.</p><p>? - Ceiling rates for wind and solar energy deviation refixed based on a pilot study conducted by the SLDC.</p><p>?</p><p><strong>Repeal of Previous Regulations:</strong></p><p>? - The new regulations repeal the existing ones from 2019.</p><p>?</p><p><strong>Conclusion:</strong></p><p>The regulations aim to enhance the accuracy of forecasting for RE power, ensure fairness to generators, and simplify implementation through single QCA selection. The changes reflect advancements in technology and a commitment to optimal grid management.</p>
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- November
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- October
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- Gujarat's rooftop solar power scheme
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- Thermal coal import likely to cross 200 MT in 2019-20
- Renewable energy capacity by 2022 to exceed 175 GW target
- L&T wins up to Rs 2,500 crore worth contracts from domestic, international markets
- September
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- Capacity utilisation to rise as power demand to hover between 6-7%
- Ind-Ra revises solar sector outlook to stable for FY20
- Power distribution sector needs drastic reforms
- Guj Govt Announces Changes in Solar Power Policy
- India's coal import declines about 4% to 19 mn tonnes in July
- Tata Power decommissions 500 MW unit at Trombay citing high cost
- Coal India trade unions will need longer strike to dent current coal stock position
- Coal shortage puts Rs 5 trn investment in power plants at risk
- CIL drops plan to cut supplies to inefficient power plants
- Future thermal power plants at risk as water stress increases
- India reaches solar power target four years ahead of schedule
- Govt may hive off Coal India into separate listed firms to raise funds
- NTPC awards Rs 2,311 crore contracts to GE Steam Power
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- Core sector growth slows to 2.1% in July
- Coal stocks at 47 power plants reach critical levels
- Coal stocks at 47 power plants reach critical levels
- Lanco Thermal Power receive a claim of Rs 24,000 crore
- Over-capacity, water shortage and renewable power exerts pressure on thermal power plants
- Over-capacity, water shortage and renewable power exerts pressure on thermal power plants
- August
- Japan cautions Andhra Pradesh against reworking green power pacts
- Gujarat discom seeks to stop high Adani tariff
- Policy induce stepped-up thermal efficiency in power plants
- No bidders for NTPC
- Coal crunch shuts down three units of NTPC
- IIT Hyderabad develops low-cost, eco-friendly solar cells using
- Thermal power to stay main energy source despite renewable push
- IOC joins NTPC, SECI, private energy firms against AP
- July
- Widening demand-supply gap raises average prices by 24%
- Increased power offerings at the Indian Energy Exchange pulls
- Power demand grows at 7.4%
- Private sector banks go easy on correspondents network
- Demand increases power prices by 7% in two days
- Wind power companies file writ against AP
- Coal India clears over 44% rake backlog to non-power sector consumers
- Andhra Pradesh calls meet with wind power firms to rejig tariffs
- Debt respite for Rel Infra and Power
- L&T Bags Rs 7,000 crore order for power project
- Andhra to revise contracts signed in Naidu’s tenure
- Coal to dominate India power
- NTPC awards Rs 2,311 crore contracts to GE Steam Power
- Rules for captive power plants to be amended
- States seek help to make power plants meet emission norms
- MP govt plans to set up coal power plants amid stress in sector
- June
- States may get regional power regulators
- Solar power can save you Rs 46,000 in yearly bill
- Eight EU countries to phase out coal by 2030
- Vedanta,JSW Energy bid low for stressed Odisha power project
- Telangana govt to buy 2000 mw additional power from NTPC
- Govt’s 100-day plan aims to re-energize India
- Power regulators may be told not to lower tariffs of stressed plants
- Power generation growth likely to double in FY20
- RBI may shun sectoral exceptions
- Coal supply improved
- May
- India becomes lowest-cost producer of solar power
- Power sector resolution to get delayed on Supreme Court order
- Power sector reforms - a new agenda for the new government
- Regulatory assets of power sector stand at Rs 76,963 cr
- Tamil Nadu discom to halt wind and solar auctions
- Delhi peak hour power demand
- Coal here to stay despite India
- India
- April
- March
- Renewable Energy groups bid aggressively for Solar projects
- Gujarat to stop preferential treatment in awarding Wind Projects
- Assam taps into its Solar potential
- Reforms to promote green Transmission Cables
- NTPC strides towards self sustainability
- New energy policy instills insecurity in small firms
- Drop in solar PPA tariffs
- Solar Projects
- New cable infrastructure being considered as replacement under IPDS
- GERC edicts OEM & EPC particulars in project tender
- Thermal Power
- February
- ZoomThru
- Coal India
- Solar Power lined up for 5 MW in Tamil Nadu
- Substation installation at sub zero temperature in Kashmir completed
- More and more Consumers are going off grid
- Will solar and wind prices fall further?
- Grid Storage systems commissioned by Tata Power
- Sensex, Nifty choppy on subdued global cues; ITC rises 1%
- IL&FS selling its Tamil Nadu assets
- SoftBankled SB Energy has made its first pitch for a wind tender in India
- Coal supplies to power plants up 7.3%: Coal ministry
- January
- Natural death of Energy Savings Certificates
- Energy majors adopt block chain platform for their trading.
- PM to inaugurate PETROTECH 2019
- PG&E, the Electricity Utility of California, has moved closer to Bankruptcy!
- Power Sector Employees in the Government to strike work
- OA Software Instructions
- Notification
- Government to allot 10 coal mines to CIL in 2019
- Cabinet nod to sale of govt
- Existing gas based plants have no future, SBI
- GST on Electricity in the offing
- December
- 2018