Law Updates

Subject

Summary: The Ministry of New and Renewable Energy has invited comments from stakeholders on the draft revised specifications for solar pump controllers. The invitation was issued by its Standards and Quality Control Division through Office Memorandum File No. 313-12/2/2026-S&QC, dated 12 August 2026. The draft, prepared by the National Institute of Solar Energy (NISE), proposes detailed performance, safety, testing, and environmental requirements for solar photovoltaic water-pumping controllers. It also introduces a wider role for these controllers by covering multifunction applications, battery storage and grid-interactive operation. According to the office memorandum, comments may be submitted by 28 August 2026. This is a consultation deadline, not a deadline for complying with the proposed technical requirements. The proposal may be particularly relevant to solar pump controller manufacturers, PM-KUSUM vendors, system integrators, component suppliers, battery-system developers, testing laboratories, state implementing agencies and businesses involved in agricultural solar-energy equipment. Draft Specification at a Glance Particular Verified details Issuing authority Ministry of New and Renewable Energy, Standards and Quality Control Division Technical draft prepared by National Institute of Solar Energy Document type Office memorandum inviting comments, accompanied by draft revised technical specifications File number 313-12/2/2026-S&QC Date of issue 12 August 2026 Legal status Draft issued for stakeholder consultation Effective date Not expressly specified Consultation deadline in office memorandum 28 August 2026 Compliance deadline Not applicable at the draft-consultation stage Proposed standard title Solar Photovoltaic Water Pumping Controllers - Performance, Safety and Test Requirements Maximum covered PV input voltage Up to 1,000 V DC Applications covered Agricultural, potable-water, community-water and industrial solar pumping applications Controller modes covered Off-grid, off-grid with storage, multifunction, grid-feeding and grid-interactive Supported motor technologies Induction, PMSM and BLDC motors Main stakeholders Manufacturers, system integrators, testing laboratories, PM-KUSUM vendors and implementing agencies Main development Proposed standardisation of controller safety, efficiency, interoperability, monitoring and testing Fees or penalties Not expressly specified The official MNRE notice confirms that the Ministry has invited comments on the draft. However, the webpage displays an “End Date” of 11 October 2026, while the attached office memorandum expressly asks stakeholders to submit comments by 28 August 2026. Unless MNRE issues a clarification, stakeholders should work with the earlier date stated in the signed office memorandum. Draft Status and Legal Effect These are only proposed requirements at this point. The draft is still open for consultation and does not create any new compliance obligation yet. The draft repeatedly uses expressions such as “shall,” “should” and “may.” These expressions describe how the proposed framework is intended to operate if it is finalised. They do not, by themselves, make the draft legally binding during the consultation stage. The document does not expressly specify: A final adoption date An effective date A transition period A certification commencement date A list of recognised testing laboratories A product-registration process Government fees Enforcement provisions Penalties for non-compliance Treatment of controllers already manufactured, tested or deployed These matters may need to be addressed when MNRE finalises the specification or incorporates it into PM-KUSUM guidelines, procurement documents, quality-control requirements or another binding instrument. Regulatory and Standards Framework The proposal is connected with the technical framework for solar photovoltaic water pumping systems deployed under MNRE programmes, including PM-KUSUM. Existing MNRE specifications for solar photovoltaic water pumping systems already address matters such as controller capacity, MPPT, enclosure protection, remote monitoring and pump-system safeguards. The new draft focuses specifically on solar pump controllers and proposes a more detailed framework for controller performance, safety, environmental resistance, power quality and testing. Normative references The draft identifies the following as normative references, meaning that their relevant provisions are intended to form part of the proposed technical requirements: IS 17018-1 - Solar photovoltaic water pumping systems and centrifugal pumps IS 16221 Part 1 - Safety of power converters used in photovoltaic power systems IS 16221 Part 2 - Safety of power converters used in grid-connected photovoltaic systems IS 16169 - Procedure for islanding-prevention measures IEC 60990:1999 - Touch-current measurement IEC 60529 - Degrees of protection provided by enclosures IS/IEC 61683 - Efficiency measurement of PV power conditioners IEC 62116 - Test procedure for islanding-prevention measures IEC 60068 series - Environmental testing IS 3043 - Code of practice for earthing The draft states that the latest editions of these standards would apply. Informative references The draft separately classifies the following as informative references: MNRE technical specifications for solar water pumping systems IEC 61000-4-7 concerning harmonics and interharmonics measurements IEC 61000-3-2 concerning harmonic-current emission limits An informative reference is included to provide additional context or guidance. It does not, by itself, create a separate requirement that businesses must follow unless the final document specifically makes it mandatory. Scope and Applicability The draft applies to solar photovoltaic water pumping controllers intended for: Off-grid solar pumping Off-grid pumping with battery storage Multifunction operation Grid-feeding operation Grid-interactive pumping systems It covers controllers used for: Agricultural irrigation Potable-water supply Community-water systems Industrial solar pumping The proposed scope extends to controllers with: PV input voltage up to 1,000 V DC Single-phase or three-phase output Compatibility with induction motors Compatibility with permanent magnet synchronous motors Compatibility with brushless DC motors The proposal is therefore wider than a controller specification limited to agricultural irrigation. It could influence product design for community water, rural-energy, industrial pumping and multifunction farm-energy systems. Proposed Controller Configurations The proposed configurations cover different operating needs, from basic solar pumping to battery-backed systems and grid-connected applications: Standard solar pumping controller The core controller converts DC electricity from a solar PV array into an electrical output suitable for operating a pump motor. It is also expected to perform control, protection, MPPT and monitoring functions. Off-grid multifunction controller without storage Annexure I proposes an off-grid multifunction controller that can use solar power for pumping and other agricultural or household applications without a dedicated battery. The proposed configuration contains four outputs: A three-phase output dedicated to agricultural pumps or motors A three-phase variable-voltage and variable-frequency output for other agricultural equipment A single-phase variable-voltage and variable-frequency output for agricultural machinery A fixed-voltage, fixed-frequency single-phase output for household loads The annexure describes two three-phase outputs rated at 400 V and two single-phase outputs rated at 220 V, 50 Hz. Although the annexure refers to four independent outputs, the main body states that only one selected load should operate at a time. The controller interface must provide load selection and electrical and operational interlocking between the outputs. Off-grid multifunction controller with battery storage The draft permits a dedicated battery energy storage system to be integrated with the controller. The proposed battery bank would connect to the DC bus through a Dual Active Bridge converter. This arrangement allows electricity to flow in both directions between the battery and the controller. A storage-enabled system could: Continue supplying power during low solar irradiance Support loads outside sunshine hours Respond to temporary load variations Store surplus solar electricity Improve the reliability of irrigation and agricultural operations Support selected household or critical rural loads For functional verification, the solar PV array, controller, battery bank and DAB converter would be tested as an integrated system. For performance evaluation, the proposal requires separate assessment in solar-only, and battery-only modes. Hybrid controller with grid import and export The draft also describes a hybrid multifunction controller capable of interacting with the utility grid. Depending on the applicable regulatory framework, such a controller could: Export surplus solar electricity to the grid Import grid electricity when solar and battery power are insufficient Manage electricity among the PV system, battery, grid, agricultural loads and household loads Prioritise power sources for critical loads Operate through net-metering or behind-the-meter arrangements The proposal does not create an automatic right to export electricity. Grid export, net metering and interconnection would remain subject to applicable electricity regulations, distribution-company requirements, state rules and grid codes. Proposed Rating, Capacity and Marking Requirements The proposed requirements set clear expectations for the controller’s performance, identification, safety markings and operating conditions: 1. Controller rating The manufacturer would be required to declare the controller’s rated power. The proposed controller rating must be equal to or greater than the peak power of the connected PV array, as specified for the relevant water pumping system under MNRE specifications and IS 17018-1. The controller would also have to deliver its marked output power or rated current continuously for at least two hours while operating the pump at peak rated voltage and frequency. During this test, it should not: Trip an overcurrent-protection device Shut down due to over-temperature protection Fail to deliver the declared output 2. Rating plate and permanent markings The controller would require a permanent, weatherproof rating plate. The draft proposes: Minimum text height of 3 mm Minimum safety-symbol size of 10 mm Etched or embossed markings Markings that remain legible through the equipment’s service life The rating plate would include: Manufacturer’s name or trademark Model number Serial number Month and year of manufacture Maximum PV input voltage Maximum PV short-circuit current Maximum permissible PV array power MPPT voltage range Maximum current per MPPT input, where applicable Number of MPPT inputs, where applicable Motor output-voltage range Rated motor power Rated output current Supported motor type The draft further identifies the controller as: Overvoltage Category III Pollution Degree 3 IP65 or higher Equipment Class I Suitable for an ambient-temperature range of 0°C to 50°C Proposed safety markings include warnings relating to PV disconnection, protective earthing, hot surfaces and hazardous DC voltage. Wider PV Input-Voltage Operation The draft places considerable emphasis on wider input-voltage operation. This is intended to make controllers more adaptable to changes in PV module size, rating, voltage and efficiency. Manufacturers would declare minimum, nominal and maximum input-voltage values. Testing would then be conducted at: Minimum declared voltage Nominal voltage At least 90% of the maximum declared voltage For all motor-pump sets, the controller would have to operate at: Nominal voltage minus 15% Nominal voltage Nominal voltage plus 15% The controller would be expected to deliver rated power at each of these three voltage levels. The draft also proposes that the controller should continue operating where one PV module is added or removed, including variations associated with bypass-diode activation. Controllers rated at 10 kVA or above would require multi-channel MPPT to reduce array mismatch losses and improve energy harvesting. Proposed Efficiency Requirements Efficiency is where a solar controller proves its real value. The proposed requirements focus on reducing power losses, improving MPPT performance and making sure more of the available solar energy reaches the connected load. Power-conversion efficiency At or above 80% of rated PV power under standard test conditions, the draft proposes the following minimum conversion efficiency: Controller capacity Minimum conversion efficiency Below 5 kVA or 5 HP 93% 5 kVA or 5 HP and above 94% These limits would apply regardless of whether the controller uses a single-stage or two-stage design. Static MPPT efficiency Static MPPT efficiency measures how effectively a controller extracts available PV power under stable operating conditions. The draft proposes a minimum static MPPT efficiency of 98% across 10% to 100% of rated PV input power. Dynamic MPPT efficiency Dynamic MPPT efficiency measures performance while solar irradiance is changing. The draft proposes a minimum dynamic MPPT efficiency of 97% under hot-day and cold-day profiles specified under IS 17018-1. Overall system efficiency The proposed minimum overall efficiency at or above 80% of rated PV input power is: Controller Rating Conversion Efficiency MPPT Efficiency Minimum Overall Efficiency Below 5 HP At least 93% At least 97% At least 90.2% 5 HP and above At least 94% At least 97% At least 91.2% Testing would be carried out at minimum, nominal and 90% of maximum DC input voltage, with measurements at 10%, 25%, 50%, 75% and 100% input-power levels. Motor Control and Agricultural Load Operation The draft allows controllers to use constant V/f control, flux control or an equivalent manufacturer-developed control algorithm. The controller should provide stable operation from zero speed to rated speed. For a universal or multifunction solar pump controller used with equipment such as flour mills and chaff cutters, the draft proposes a minimum torque-overload capability of 150% for 30 seconds. The overload test may be conducted by: Increasing mechanical torque to 150% of rated torque; or Increasing motor current to 150% of rated current Annexure II also allows laboratories to use simulated loads instead of procuring every type of farm equipment. Dynamometers, motor arrangements, resistive loads and programmable load banks may be used to recreate relevant operating conditions. If the applied torque exceeds the permissible limit, the controller should initiate protective action and generate a torque-overload alarm or fault indication. Power-Quality Requirements Poor power quality can quietly damage motors, increase heating and shorten equipment life. The proposed requirements aim to keep the controller’s output within safe limits and maintain reliable motor performance under different operating conditions. 1. Sinusoidal motor output For induction and PMSM motors operating with a sinusoidal output the proposed limits are: Total harmonic distortion not exceeding 10% No individual harmonic exceeding 6% of the fundamental component Testing at 25% or minimum continuous load, 50% load and 100% rated load Harmonic evaluation from the second to the fortieth order These requirements are intended to reduce motor heating, insulation stress, torque ripple and long-term performance problems. 2. Intentionally non-sinusoidal output For controllers designed to supply a non-sinusoidal waveform to dedicated motor loads, the draft proposes: Voltage THD not exceeding 40% Voltage-transition slope not exceeding 10 V/µs Peak output voltage not exceeding 1.414 multiplied by 110% of rated RMS voltage. Verification at 10%, 50% and 100% of rated output power. Evidence that the controller-motor combination can operate without excessive heating, insulation stress or protection failure. 3. Voltage spikes For a 415 V motor system with more than 60 metres of cable, the proposed peak voltage at the motor terminals must not exceed 620 V. The spike duration must remain below 1 microsecond. Electrical Safety Requirements The draft also lays down safety checks for high-voltage electrical parts. These cover insulation, leakage current and stored charge, to reduce the risk of electric shock during use or maintenance. 1. Insulation withstand The draft proposes humidity preconditioning before dielectric testing. The controller would be exposed to 92% relative humidity at 40°C for 48 hours. The proposed dielectric test voltage is calculated as: Two times the maximum PV input voltage plus 1,000 V AC The voltage would be applied at 50 Hz for one minute. The proposed acceptance criteria are: Leakage current not exceeding 5 mA RMS No insulation breakdown No flashover No arcing Insulation resistance greater than 100 MΩ at 500 V DC after the test 2. Touch-current Limits During rated operation, the proposed limits are: Maximum 3.5 mA AC leakage Maximum 10 mA DC leakage 3. Stored-energy Discharge After disconnecting the PV input, the voltage at the PV terminals must fall below 60 V within 10 seconds. This requirement is intended to reduce the risk of electric shock during servicing or maintenance. Environmental-Protection Requirements Solar pump controllers are commonly installed in dusty fields and exposed to humidity, rain and high temperatures. The draft therefore classifies the equipment for Pollution Degree 3 and Overvoltage Category III conditions. 1. IP65 enclosure test The draft proposes both dust and water-jet testing. For dust protection, the controller would be exposed to circulating talcum powder at 2 kg/m³ for approximately eight hours, with a negative internal pressure of 2 kPa. For water protection, jets would be directed from multiple angles at a distance of 2.5 to 3 metres. The equipment would then be drained before inspection. The controller would pass where: No visible dust enters the enclosure No water accumulates in a manner affecting components or operation Normal operation continues after testing 2. Humidity Exposure The proposed humidity preconditioning is: 92% relative humidity, with a tolerance of ±3% 40°C, with a tolerance of ±2°C Continuous exposure for 48 hours No internal drying before dielectric testing Dielectric testing within two hours after removal 3. Impulse-voltage withstand The proposed impulse test uses a 6 kV peak impulse: Three positive pulses Three negative pulses Minimum one-minute interval Application between PV and motor, PV and earth, and motor and earth The controller would have to show no flashover, puncture, excessive leakage or component disruption. Thermal and Fault-Condition Tests The proposed tests focus on safe operation during heat, faults and abnormal conditions, with added safeguards for battery-based systems. Normal Thermal Test The controller would operate for four hours under rated conditions. Proposed maximum temperatures include: Component Maximum temperature Touchable metal surface 65°C Touchable metal surface 75°C Operator controls 55°C Transformer or motor windings 155°C for Class F Semiconductors Manufacturer’s datasheet limit Fan-block Test The draft proposes blocking controller vents or heat sinks with surgical cotton and operating the controller at full load for seven hours. The proposed acceptance conditions are: External surface temperature not exceeding 90°C No ignition No evidence of scorching or burning Output short-circuit Test Motor terminals would be shorted under full PV input. The test would record current, clearing time and controller response. The controller would need to remain stable or activate protection without causing fire or enclosure deformation. Dry-run Protection The controller should detect pump operation without adequate water and display a dry-run error. Open-circuit and reverse-polarity protection The controller should detect an open PV circuit and reverse polarity and provide a corresponding fault indication. Battery Storage and Charging Requirements Where a controller contains a battery-charging function, the draft proposes additional compliance with IS 16797:2019 and IEC 62509:2010. The proposed battery provisions include: Settable charging logic Constant-current and constant-voltage charging for LFP batteries Boost and float charging for lead-acid batteries Overcharge protection Over-discharge protection Load disconnection Charging set-point accuracy of ±1% Load-disconnect accuracy of ±2% Protection against unauthorised set-point changes Temperature-compensated charging, where applicable Reverse-polarity protection PV-side and load-side overcurrent protection Charging-status indication State-of-charge information Low-battery and load-disconnect alarms Annexure II contains blank spaces for manufacturer-specific charging currents, voltage cut-offs and set points. These values would need to be declared and verified for the particular battery system. Grid-Feeding and Anti-Islanding Requirements For grid-connected operation, the proposed hybrid controller would have to meet the anti-islanding requirements of IEC 62116 and the applicable safety provisions of IS 16221 Part 2. If the utility grid fails, the controller would have to: Detect the abnormal condition Disconnect from the grid within two seconds Prevent unintentional islanding Protect utility personnel and connected equipment Before connecting or reconnecting, the controller would need to synchronise its voltage, frequency and phase angle with the grid in accordance with IEC 61727 and the applicable Indian grid code. These technical provisions do not replace state-level interconnection, net-metering or distribution-licensee requirements. Remote Monitoring, Display and Alarm Requirements The draft proposes integration with a remote monitoring system using GSM or GPRS and geotagging. The controller display and remote system would provide information such as: Pump on/off status Fault name Dry-run fault Short-circuit fault Low-irradiance condition PV array input voltage DC and AC current DC and AC output voltage Operating frequency Latitude and longitude Pump capacity PV module capacity Current power generation Daily solar generation Cumulative solar generation Daily operating hours Cumulative pump operating hours Daily or cumulative water discharge Peak power supplied to the motor-pump set The draft does not expressly prescribe data-retention periods, cybersecurity controls, data ownership, communication charges, portal integration or privacy safeguards for this proposed controller-specific framework. These areas may require clarification before final implementation. Proposed Type-Test Sequence The draft includes a sequential testing structure covering: Visual inspection and rating-plate verification Humidity exposure Dielectric withstand Impulse-voltage withstand Touch-current measurement Stored-energy discharge Normal thermal testing IP65 testing Output-waveform testing Short-circuit testing Backfeed testing Fan-block testing Overload testing Efficiency testing Power-quality testing The table itself skips sequence number 14 and labels the last tests as 15 and 16. This appears to be a numbering issue rather than evidence of an omitted technical requirement, but it should be clarified in the final version. The draft also proposes a post-test protocol after every test. This includes dielectric verification, insulation-resistance measurement, visual inspection and confirmation that the controller can still perform its basic PV-to-motor function. Annexure II: Multifunction Controller Testing Annexure II provides a testing format for an off-grid multifunction controller. The laboratory would verify: Application selection through the controller display Automatic mode selection through a keypad or remote interface Prevention of manual changeover Application-specific software Operation across the declared PV input-voltage range Efficiency under hot and cold irradiance profiles Solar-only and battery-only performance Output ripple and distortion Three-phase and single-phase waveforms Operation at lower PV power levels Torque performance Battery charging Load disconnection Overcurrent protection Reverse-polarity protection Alarm functions Safety markings Touch current Impulse withstand Thermal limits Total circuit protection Actual flour mills, chaff cutters, freezers and farm equipment would not necessarily need to be installed in the laboratory. Equivalent loading could be simulated through motors, dynamometers, programmable loads and load banks. Likely Business Impact The proposed changes could affect manufacturers, testing bodies, system integrators and end users across the solar and rural-energy ecosystem. 1. Solar Pump Controller Manufacturers Manufacturers may need to review their hardware, firmware, enclosure, rating plate and thermal design against the proposed requirements. The wider voltage range, efficiency limits, IP65 tests, impulse withstand, multifunction outputs and detailed type-test sequence could require design changes or additional evidence. 2. PM-KUSUM Vendors and System Integrators Vendors may need to ensure that controller ratings match the connected PV array rather than only the pump’s motor rating. They may also need to verify compatibility among: PV modules Controllers Motor-pump sets Battery systems DAB converters Remote monitoring systems Grid interfaces 3. Testing Laboratories Testing laboratories could see increased demand for combined electrical, environmental, performance and functional testing. However, laboratories may require additional equipment for: Dynamic MPPT testing Hot and cold irradiance profiles Torque simulation IP65 testing Humidity preconditioning Impulse testing Battery-system assessment Grid-interactive and anti-islanding testing 4. Battery and Power-electronics Businesses The proposed storage configuration may create opportunities for battery manufacturers, DAB converter developers, energy-management providers and rural-energy solution companies. These opportunities remain dependent on the final specification, scheme design and procurement framework. 5. Farmers and Rural Users If implemented effectively, multifunction controllers could help farmers use solar electricity for more than irrigation. Potential applications include: Flour milling Chaff cutting Farm machinery Cold storage Refrigeration Household loads Community-energy applications The practical benefit would depend on system cost, available PV capacity, load compatibility, safe wiring, maintenance support and operating rules. Drafting Issues That May Require Clarification Stakeholders should consider raising the following points during consultation: 1. Different dates on the Memorandum and MNRE Webpage The office memorandum asks for comments by 28 August 2026. The MNRE notice webpage displays an end date of 11 October 2026. The Ministry may need to clarify the controlling consultation deadline. 2. Output-voltage Differences Annexure I refers to 220 V single-phase output, while Annexure II refers to 230 V single-phase output. The document also refers to 400 V, 415 V and up to 440 V in different contexts. These values may describe different operating or test conditions, but the final specification should explain their relationship clearly. 3. Different Distortion Limits The main body permits up to 10% THD for sinusoidal output and up to 40% for intentionally non-sinusoidal motor output. Annexure II separately states that ripple and distortion should be below 5% after 25% loading. The final document should explain whether the 5% requirement applies to voltage ripple, waveform distortion, a particular output or a separate measurement. 4. Insulation-resistance Inconsistency Clause 8.1 requires insulation resistance greater than 100 MΩ at 500 V DC after dielectric testing. The post-test protocol later refers to a value greater than 50 MΩ. A single acceptance limit should be specified. 5. Section and Test Numbering The draft contains repeated or missing numbering, including: Two different sections numbered 10 A type-test sequence that skips number 14 Annexure II skipping item 8 Duplicate overcurrent-protection entries numbered 18 and 19 A later display and monitoring section also numbered 13 Renumbering would improve usability and prevent test-reporting errors. 6. Cross-reference Issues The humidity section refers to dielectric testing under clause 6.1, although the relevant insulation test appears under clause 8.1. Cross-references should be checked before finalisation. 7. Four Outputs versus One Operating Load Annexure I describes four independent outputs, while the main body states that only one load may operate at a time. The final specification should clarify whether “independent” refers only to separate terminals and software configurations. 8. Testing and Certification Mechanism The draft requires independent testing but does not expressly specify: Which laboratories may conduct the tests Whether NABL accreditation is required Applicable accreditation scopes Whether one sample or multiple samples must be tested Test-report validity Retesting after design changes Surveillance requirements Product certification or registration procedure 9. Treatment of Existing Controllers The draft does not explain how a final specification would affect: Controllers already installed Products already type-tested Existing PM-KUSUM contracts Current tenders Products in inventory Models undergoing testing A transition or grandfathering framework may therefore be necessary. 10. Data and Remote-monitoring Governance The proposal lists extensive operational and geolocation data but does not expressly address cybersecurity, data ownership, access rights, retention, communication failure or portal interoperability. 11. Grid-interconnection Dependencies The hybrid model refers to grid import, export, net metering and behind-the-meter operation. The final document should clearly distinguish controller capability from the separate regulatory permission required for grid connection and export. How to Submit Comments The office memorandum invites comments from stakeholders by 28 August 2026. Comments may be sent to: rajkumarb.mnre@gov.in kamlesh.yadav@nise.res.in The memorandum does not prescribe a specific comment format. A structured clause-wise submission would make stakeholder feedback easier to evaluate. A useful comment matrix may contain: Draft clause- Existing wording- Issue identified- Suggested wording- Technical justification Stakeholders should support comments with test data, applicable standards, field-performance evidence, safety analysis or cost implications wherever possible. What Businesses Should Do Next 1. Conduct an Applicability Review Determine which controller models, motor technologies, operating modes and product configurations fall within the proposed scope. 2. Compare Existing Products with the Draft Prepare a technical gap assessment covering: Input-voltage range MPPT capability Efficiency Power quality Enclosure protection Electrical safety Thermal performance Fault protection Marking Remote monitoring Battery compatibility Grid-interactive functions 3. Review Available Test Evidence Identify which proposed requirements are already covered by current test reports and which would require fresh testing. 4. Assess Laboratory Capability Consult testing laboratories about equipment, accreditation scope, sample requirements, test duration and likely capacity constraints. 5. Identify Unclear or Conflicting Provisions Document any technical ambiguity that could affect design, testing, cost, procurement or interoperability. 6. Submit Evidence-based Comments Send clause-wise comments before the deadline stated in the office memorandum. Avoid limiting the submission to broad commercial objections. 7. Avoid Premature Compliance Claims Do not market a product as compliant with a final MNRE 2026 specification until the draft is finalised and the applicable conformity route is established. 8. Monitor the final Version Track MNRE notices for a final specification, revised draft, implementation timeline, transition arrangements or scheme-level adoption. How Corpseed Can Help Businesses involved in solar pumping and rural-energy systems may require both regulatory interpretation and technical coordination to respond effectively to the draft. Corpseed can assist with: Applicability assessment for controller models Clause-wise review of the proposed specification Technical compliance gap assessment Preparation of structured stakeholder comments Review of rating plates and technical documentation Coordination with suitable testing laboratories Review of existing test reports against proposed requirements Battery-storage and multifunction configuration assessment Grid-interactive requirement mapping PM-KUSUM tender and specification review Ongoing monitoring of the final MNRE requirements The purpose of this support is to help manufacturers and vendors understand the proposal, identify genuine technical gaps and prepare an evidence-based response. Final acceptance, testing, certification or approval would remain subject to the competent authority and applicable laboratory or scheme procedures. Businesses that manufacture, supply, test or integrate solar pump controllers can seek specialised solar pump technical compliance consulting before submitting comments or planning product changes.