SolarEdge (78)

SolarEdge 2.2kw Single Phase HD Wave on grid solar Inverter #1:  SE-2200H-APP #4: SE2200H-RW000BNN4  SolarEdge 2.2kw Data Sheet SolarEdge 2.2kw Manual SolarEdge 2.2kw Warranty SolarEdge 2.2kw G100 Certificate *Collections are not permitted due to health & safety regulations*  Part No: SE-2200H-APP Inverters - Main Units Rating: 2,200W Phases: 1 Single Phase Inverters with HD-Wave Technology and SetAPP  The SolarEdge single phase inverter with HD-Wave technology breaks the mould of traditional solar inverters. Winner of the prestigious 2016 Intersolar Award and the renowned 2018 Edison Award, the single phase Inverter is specifically designed to work with SolarEdge power optimizers and features a standard 12-year warranty extendable to 20 or 25 years. SolarEdge's Innovative Inverter Topology MPPT in Optimisers means inverter is only responsible for DC to AC inversion. This means inverter is simpler, more cost effective and more reliable. The fixed string voltage ensures operation at the highest efficiency at all times independent of string length and temperature. HD-Wave Technology: A New Era for PV Inverters Latest generation inverter HD-Wave technology means the inverters can be smaller and lighter than ever. The record-breaking 99% efficiency allows more energy production for an improved ROI. Easy Inverter Commissioning with Inverter SetApp SolarEdge single phase inverters have not display. They use a smart new commissioning method directly through a smartphone using the intuitive SetApp mobile application. Weight: 7.8 kgRated Power: 2,200 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 4,400 WMax AC Power (5 Minutes): 2,200 WSurge AC Power (1 Second): 2,200 WMax DC Current: 6.5 AMax DC Inputs: 1Has DC Fuses: 0Connector: MC4Included Connectors: 2Euro Efficiency: 98.3 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

StorEdge NET 3680W AC Coupled inverter NO DISPLAY #1: SE-3680H-NET-AC Storage Systems - Charger-Inverter  StorEdge 3680W Datasheet   StorEdge 3680W Manual   StorEdge 3680W Warranty  StorEdge 3680W G99 Certificate  *Collections are not permitted due to health & safety regulations* AC coupled storage inverter with HD-Wave Technology and SetAPP This inverter can be used directly with SolarEdge Energy Bank or with LG Chem RESU High Voltage battery when combined with StorEdge Interface STI-S4.SolarEdge energy meter and a suitable CT are required for the correct operation of the system. Monitor battery status, PV inverter production, and self-consumption data for full visibility IP65 – Outdoor and indoor installation AC coupling means it's perfectly suited for sites with Three-phase SolarEdge PV inverters and Non-SolarEdge PV inverters or No PV at all.

Solaredge Power management package for up to 250A grid supply with Modbus Connection   Part No: SE-PM-WND-3PH-250A Power Management - Export Limitation 3ph This part is made up of the following items:   1 x  1PH/3PH 230/400V SolarEdge Energy Meter K2 with Modbus Connection 3 x 250A Split-Core Current Transformer for SolarEdge Energy Meters with Modbus Connection 1 x SolarEdge RS485 Plug-in 20 x Double pair genuine RS485 cable 1M - 4 cores   This kit is a full monitoring package for Solaredge commercial systems that allows full recording and display of energy generation and usage. Ensures that the complete system is performing at its maximum potential and enables optimisation of energy consumption.   Subject to the approval of your local DNO this package may be used to limit the power export of the system to a value agreed with the DNO. e.g. a 100kWp PV system with 85kW of inverters could be limited to 75kW of AC export power if that is required by the DNO. During periods of self consumption, e.g. Monday - Friday, sufficient power is likely to be used by the property and so no limitation is applied but during high generation and low self consumption periods the system will automatically trim the maximum export power to a DNO defined limit. With most commercial buidings this 'lost' energy will be a very small percentage of the total annual generation and the benefit of having additional generation capacity most of the time will far outweigh the lost generation during other times.   Note: This kit includes 1x RS485 Expansion Kit, which means its only suitable for systems with 2x inverters. If more than 2x inverters on site additional RS485 Kit per inverter will be required, if only one inverter on site this part will not be required.   A 20m length of RS-485 cable is included for connection between the first inverter and energy meter, and for connecting the inverters in the bus. Please check if this quantity is sufficient.   Supplied with 3 X 250A current monitoring clamps suitable for installation on properties with up to 250A per phase power supply.   Current clamps should be sized according to incoming grid supply in the property, please check if these are sufficient before buying. Please note smaller CTs are available

SolarEdge Home Backup Interface - Home Hub Inverter (Single-Phase RWB) #1: SE-SBI-1PH Storage Systems - Accessory  SolarEdge Backup Interface Datasheet *Collections are not permitted due to health & safety regulations* Flexible Backup Interface Automatically provides backup power to home loads in the event of grid interruption. Flexibility in which loads to back up - the entire home or selected loads. Scalable solution to support higher power & higher capacity. Seamless integration with the SolarEdge Home Hub Inverter to manage and monitor both PV generation and energy storage. Accessory for the single-phase Home Hub 'RWB' range of SolarEdge Inverters.

SolarEdge 8kw Single Phase HD Wave on grid solar Inverter #1: SE-8000H-APP Inverters - Main Units#3: SE8000H-RW000BEN4  SolarEdge 8kw Data Sheet SolarEdge 8kw Manual SolarEdge 8kw Warranty SolarEdge 8kw G100 Certificate *Collections are not permitted due to health & safety regulations* Rating: 8,000WPhases: 1Single Phase Inverters with HD-Wave Technology and SetAPP The SolarEdge single phase inverter with HD-Wave technology breaks the mould of traditional solar inverters. Winner of the prestigious 2016 Intersolar Award and the renowned 2018 Edison Award, the single phase Inverter is specifically designed to work with SolarEdge power optimizers and features a standard 12-year warranty extendable to 20 or 25 years.SolarEdge's Innovative Inverter TopologyMPPT in Optimisers means inverter is only responsible for DC to AC inversion. This means inverter is simpler, more cost effective and more reliable. The fixed string voltage ensures operation at the highest efficiency at all times independent of string length and temperature.HD-Wave Technology: A New Era for PV InvertersLatest generation inverter HD-Wave technology means the inverters can be smaller and lighter than ever. The record-breaking 99% efficiency allows more energy production for an improved ROI.Easy Inverter Commissioning with Inverter SetAppSolarEdge single phase inverters have not display. They use a smart new commissioning method directly through a smartphone using the intuitive SetApp mobile application.   Weight: 16.5 kgRated Power: 8,000 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 16,000 WMax AC Power (5 Minutes): 8,000 WSurge AC Power (1 Second): 8,000 WMax DC Current: 20.5 AMax DC Inputs: 3Has DC Fuses: 0Connector: MC4Included Connectors: 6Euro Efficiency: 99 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

StorEdge HD Wave 5000W AC Coupled inverter NO DISPLAY #2: SE-5000H-APP-AC #4: SE5000H-RWSACBNN4  SolarEdge 5000W Data Sheet  SolarEdge 5000W Manual  SolarEdge 5000W Warranty  SolarEdge 5000W G99 Certificate  *Collections are not permitted due to health & safety regulations* AC coupled storage inverter with HD-Wave Technology and SetAPP  This inverter can be used directly with SolarEdge Energy Bank or with LG Chem RESU High Voltage battery when combined with StorEdge Interface STI-S4. SolarEdge energy meter and a suitable CT are required for the correct operation of the system. - - AC coupling means it’s perfectly suited for sites with 1.      Three-phase SolarEdge PV inverters and 2.      Non-SolarEdge PV inverters or 3.      No PV at all. - Monitor battery status, PV inverter production, and self-consumption data for full visibility - IP65 – Outdoor and indoor installation

SolarEdge 3.68kw Single Phase HD Wave on grid solar Inverter#1: SE-3680H-APP #4: SE3680H-RW000BEN4  SolarEdge Data Sheet  SolarEdge Installation Guide  SolarEdge Warranty  SolarEdge G100 Export Limitation - U *Collections are not permitted due to health & safety regulations*Rating: 3,680WPhases: 1The SE3680H-RW000BEN4 enables optimized installation with HD-Wave technology. SolarEdge Home Wave 3.68kW Solar Inverter - Single Phase with SetApp (Home Network Ready) Specifically designed to work with SolarEdge Power Optimizers Industry leading efficiency with 200% DC oversizing Quick and easy inverter commissioning directly from a smartphone using the SolarEdge SetApp Seamless wireless connectivity with system devices such as the SolarEdge Home Battery, via optional SolarEdge Home Network platform Extremely compact, lightweight and easy to install Built-in module-level monitoring Suitable for outdoor and indoor installation Fixed voltage inverter for longer strings Advanced safety feature - integrated arc fault protection Weight: 7.8 kgRated Power: 3,680 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 7,360 WMax AC Power (5 Minutes): 3,680 WSurge AC Power (1 Second): 3,680 WMax DC Current: 10.5 AMax DC Inputs: 1Has DC Fuses: 0Connector: MC4Included Connectors: 2Euro Efficiency: 98.8 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

SolarEdge 3kw Single Phase HD Wave on grid solar Inverter#1: SE-3000H-APP Inverters - Main Units#4: SE3000H-RW000BEN4  SolarEdge 3kw Data Sheet SolarEdge 3kw Manual SolarEdge 3kw Warranty SolarEdge 3kw G100 Certificate *Collections are not permitted due to health & safety regulations*Rating: 3,000W Phases: 1 Single Phase Inverters with HD-Wave Technology and SetAPP The SolarEdge single phase inverter with HD-Wave technology breaks the mould of traditional solar inverters. Winner of the prestigious 2016 Intersolar Award and the renowned 2018 Edison Award, the single phase Inverter is specifically designed to work with SolarEdge power optimizers and features a standard 12-year warranty extendable to 20 or 25 years. SolarEdge's Innovative Inverter TopologyMPPT in Optimisers means inverter is only responsible for DC to AC inversion. This means inverter is simpler, more cost effective and more reliable. The fixed string voltage ensures operation at the highest efficiency at all times independent of string length and temperature. HD-Wave Technology: A New Era for PV InvertersLatest generation inverter HD-Wave technology means the inverters can be smaller and lighter than ever. The record-breaking 99% efficiency allows more energy production for an improved ROI.Easy Inverter Commissioning with Inverter SetAppSolarEdge single phase inverters have not display. They use a smart new commissioning method directly through a smartphone using the intuitive SetApp mobile application. Weight: 9.5 kgRated Power: 3,000 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 6,000 WMax AC Power (5 Minutes): 3,000 WSurge AC Power (1 Second): 3,000 WMax DC Current: 9 AMax DC Inputs: 1Has DC Fuses: 0Connector: MC4Included Connectors: 2Euro Efficiency: 98.8 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

SolarEdge 4kw Single Phase HD Wave on grid solar Inverter (Home Network Ready)#1: SE-4000H-APP Inverters - Main Units#4: SE4000H-RW000BEN4  SolarEdge 4kw Data Sheet SolarEdge 4kw Manual SolarEdge 4kw Warranty SolarEdge 4kw G100 Certificate *Collections are not permitted due to health & safety regulations* Rating: 4,000WPhases: 1 ***SolarEdge 4kw can take solar up to around 6-7kw without a problem. Single Phase Inverters with HD-Wave Technology and SetAPP The SolarEdge single phase inverter with HD-Wave technology breaks the mould of traditional solar inverters. Winner of the prestigious 2016 Intersolar Award and the renowned 2018 Edison Award, the single phase Inverter is specifically designed to work with SolarEdge power optimizers and features a standard 12-year warranty extendable to 20 or 25 years.SolarEdge's Innovative Inverter Topology MPPT in Optimisers means inverter is only responsible for DC to AC inversion. This means inverter is simpler, more cost effective and more reliable. The fixed string voltage ensures operation at the highest efficiency at all times independent of string length and temperature.HD-Wave Technology: A New Era for PV InvertersLatest generation inverter HD-Wave technology means the inverters can be smaller and lighter than ever. The record-breaking 99% efficiency allows more energy production for an improved ROI.Easy Inverter Commissioning with Inverter SetAppSolarEdge single phase inverters have not display. They use a smart new commissioning method directly through a smartphone using the intuitive SetApp mobile application. Weight: 9 kgRated Power: 4,000 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 8,000 WMax AC Power (5 Minutes): 4,000 WSurge AC Power (1 Second): 4,000 WMax DC Current: 11.5 AMax DC Inputs: 2Has DC Fuses: 0Connector: MC4Included Connectors: 4Euro Efficiency: 98.8 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

SolarEdge 3,680W Home Wave Inverter - Single Phase (Design Tool) *Collections are not permitted due to health & safety regulations* #2: SE-3680H-NET-DT Storage Systems - Hybrid Inverter SolarEdge 3,680W Data Sheet SolarEdge 3,680W Manual SolarEdge 3.680W G100 Certificate Solar Edge 3,680W single phase inverter - optimized installation with HD-Wave Technology Features: Specifically designed to work with SolarEdge Power Optimizers Quick and easy inverter commissioning using the SolarEdge SetApp Industry leading efficiency with 200% DC oversizing Wireless connectivity with devices such as SolarEdge Home Battery, via optional SolarEdge Home Network platform Compact, lightweight and easy to install Built-in module-level monitoring Suitable for outdoor and indoor installation Fixed voltage inverter for longer strings Advanced safety feature - integrated arc fault protection  Specs: Weight: 7.8 kgRated Power: 3,680 WMin PPT Voltage: 380 VMax PPT Voltage: 480 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 7,360 WMax AC Power (5 Minutes): 3,680 WSurge AC Power (1 Second): 3,680 WMax DC Current: 10.5 AMax DC Inputs: 1Has DC Fuses: 0Connector: MC4Included Connectors: 2Euro Efficiency: 98.8 %Transformer: NoneMPPT Quantity: 1Has Integrated DC Switch: YesWarranty: 12 years

SolarEdge 3680W Home Wave Inverter - Single Phase Network Ready #1: SE-3680H-NET  SolarEdge 3680W Data Sheet  SolarEdge 3680W Manual  SolarEdge 3680W Warranty  SolarEdge 3680W G99 Certificate  *Collections are not permitted due to health & safety regulations*Rating: 3680W Phases: 1SolarEdge Home Wave Inverter- Network Ready Optimized Installation With HD-Wave Technology Features: Specifically designed to work with SolarEdge Power Optimizers Quick and easy inverter commissioning directly from a smartphone using the SolarEdge SetApp Industry leading efficiency with 200% DC oversizing Seamless wireless connectivity with system devices such as the SolarEdge Home Battery, via optional SolarEdge Home Network platform Extremely compact, lightweight and easy to install Built-in module-level monitoring Suitable for outdoor and indoor installation Fixed voltage inverter for longer strings Advanced safety feature - integrated arc fault protection Weight: 10kgRated Power: 3,680 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 7,360 WMax AC Power (5 Minutes): 3,680 WSurge AC Power (1 Second): 3,680 WMax DC Current: 10.5 AMax DC Inputs: 1Has DC Fuses: 0Connector: MC4Included Connectors: 2Euro Efficiency: 98.8 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

SolarEdge 3,500W Home Wave Inverter - Single Phase Network Ready #1: SE-3500H-NET  SolarEdge 3500W Data Sheet  SolarEdge 3500W Manual  SolarEdge 3500W Warranty  SolarEdge 3000W G99 Certificate  *Collections are not permitted due to health & safety regulations*Rating: 3,500WPhases: 1SolarEdge Home Wave Inverter- Network Ready Optimized Installation With HD-Wave Technology Features: Specifically designed to work with SolarEdge Power Optimizers Quick and easy inverter commissioning directly from a smartphone using the SolarEdge SetApp Industry leading efficiency with 200% DC oversizing Seamless wireless connectivity with system devices such as the SolarEdge Home Battery, via optional SolarEdge Home Network platform Extremely compact, lightweight and easy to install Built-in module-level monitoring Suitable for outdoor and indoor installation Fixed voltage inverter for longer strings Advanced safety feature - integrated arc fault protection Weight: 7.8 kgRated Power: 3,500 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 7,000 WMax AC Power (5 Minutes): 3,500 WSurge AC Power (1 Second): 3,500 WMax DC Current: 10 AMax DC Inputs: 1Has DC Fuses: 0Connector: MC4Included Connectors: 2Euro Efficiency: 98.8 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

SolarEdge 5000W Home Wave Inverter - Single Phase Network Ready #1: SE-5000H-NET  SolarEdge 5000W Data Sheet  SolarEdge 5000W Manual  SolarEdge 5000W Warranty  SolarEdge 5000W G99 Certificate  *Collections are not permitted due to health & safety regulations*Rating: 5000W Phases: 1SolarEdge Home Wave Inverter- Network Ready Optimized Installation With HD-Wave Technology Features: Specifically designed to work with SolarEdge Power Optimizers Quick and easy inverter commissioning directly from a smartphone using the SolarEdge SetApp Industry leading efficiency with 200% DC oversizing Seamless wireless connectivity with system devices such as the SolarEdge Home Battery, via optional SolarEdge Home Network platform Extremely compact, lightweight and easy to install Built-in module-level monitoring Suitable for outdoor and indoor installation Fixed voltage inverter for longer strings Advanced safety feature - integrated arc fault protection   Weight: 9 kgRated Power: 5,000 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 10,000 WMax AC Power (5 Minutes): 5,000 WSurge AC Power (1 Second): 5,000 WMax DC Current: 13.5 AMax DC Inputs: 2Has DC Fuses: 0Connector: MC4Included Connectors: 4Euro Efficiency: 99 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

SolarEdge 5kw Single Phase HD Wave on grid solar Inverter#1: SE-5000H-APP Inverters - Main Units#2: SolarEdge 5000W 1ph HD-Wave Inverter (SetAPP)#4: SE5000H-RW000BEN4  SolarEdge 5kw Data Sheet SolarEdge 5kw Manual SolarEdge 5kw Warranty SolarEdge 5kw G99 Certificate *Collections are not permitted due to health & safety regulations*Rating: 5,000WPhases: 1Single Phase Inverters with HD-Wave Technology and SetAPP The SolarEdge single phase inverter with HD-Wave technology breaks the mould of traditional solar inverters. Winner of the prestigious 2016 Intersolar Award and the renowned 2018 Edison Award, the single phase Inverter is specifically designed to work with SolarEdge power optimizers and features a standard 12-year warranty extendable to 20 or 25 years.SolarEdge's Innovative Inverter TopologyMPPT in Optimisers means inverter is only responsible for DC to AC inversion. This means inverter is simpler, more cost effective and more reliable. The fixed string voltage ensures operation at the highest efficiency at all times independent of string length and temperature.HD-Wave Technology: A New Era for PV InvertersLatest generation inverter HD-Wave technology means the inverters can be smaller and lighter than ever. The record-breaking 99% efficiency allows more energy production for an improved ROI.Easy Inverter Commissioning with Inverter SetAppSolarEdge single phase inverters have not display. They use a smart new commissioning method directly through a smartphone using the intuitive SetApp mobile application. Weight: 9 kgRated Power: 5,000 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 10,000 WMax AC Power (5 Minutes): 5,000 WSurge AC Power (1 Second): 5,000 WMax DC Current: 13.5 AMax DC Inputs: 2Has DC Fuses: 0Connector: MC4Included Connectors: 4Euro Efficiency: 99 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years

 SolarEdge 3.5kw Single Phase HD Wave on grid solar Inverter  #1: SE-3500H-APP #4: SE3500H-RW000BNN4 *Collections are not permitted due to health & safety regulations*  Part No: SE-3500H-APP Inverters - Main Units Rating: 3,500W Phases: 1 Single Phase Inverters with HD-Wave Technology and SetAPP  The SolarEdge single phase inverter with HD-Wave technology breaks the mould of traditional solar inverters. Winner of the prestigious 2016 Intersolar Award and the renowned 2018 Edison Award, the single phase Inverter is specifically designed to work with SolarEdge power optimizers and features a standard 12-year warranty extendable to 20 or 25 years. SolarEdge's Innovative Inverter TopologyMPPT in Optimisers means inverter is only responsible for DC to AC inversion. This means inverter is simpler, more cost effective and more reliable. The fixed string voltage ensures operation at the highest efficiency at all times independent of string length and temperature. HD-Wave Technology: A New Era for PV Inverters Latest generation inverter HD-Wave technology means the inverters can be smaller and lighter.. The record-breaking 99% efficiency allows more energy production for an improved ROI. Easy Inverter Commissioning with Inverter SetApp SolarEdge single phase inverters have not display. They use a smart new commissioning method directly through a smartphone using the intuitive SetApp mobile application.

SolarEdge 4000W Home Wave Inverter - Single Phase Network Ready #2: SE-4000H-NET or SE-4000H-NET-DT    SolarEdge 4000W Data Sheet  SolarEdge 4000W Manual  SolarEdge 4000W Warranty  SolarEdge 4000W G99 Certificate  *Collections are not permitted due to health & safety regulations*Rating: 4000W Phases: 1SolarEdge Home Wave Inverter- Network ReadyOptimized Installation With HD-Wave Technology Features: Specifically designed to work with SolarEdge Power Optimizers Quick and easy inverter commissioning directly from a smartphone using the SolarEdge SetApp Industry leading efficiency with 200% DC oversizing Seamless wireless connectivity with system devices such as the SolarEdge Home Battery, via optional SolarEdge Home Network platform Extremely compact, lightweight and easy to install Built-in module-level monitoring Suitable for outdoor and indoor installation Fixed voltage inverter for longer strings Advanced safety feature - integrated arc fault protection Weight: 10kgRated Power: 4,000 WMin PPT Voltage: 0 VMax PPT Voltage: 0 VDC Startup Voltage: 0 VDC Shutdown Voltage: 0 VMax Input Voltage: 480 VMax DC Power: 8,000 WMax AC Power (5 Minutes): 4,000 WSurge AC Power (1 Second): 4,000 WMax DC Current: 11.5 AMax DC Inputs: 2Has DC Fuses: 0Connector: MC4Included Connectors: 4Euro Efficiency: 98.8 %Transformer: NoneMPPT Quantity : 0Has Integrated DC Switch: YesWarranty: 12 years