In grid tie system the DC power produced by the solar panel is combined through a DC combiner box and is then fed to the Grid Synchronous Inverter. The inverter in-turn will convert the available DC power into AC power and will feed it to the Bi-Directional meter. The Bi-Directional meter is special equipment that can measure the flow of AC current in both direction, unlike the regular EB meter which can measure the flow of current in only one direction.

The AC power generated from the Grid Tied inverter is used by all the house hold equipment. If excess power is generated than required then this power will flow into the utility grid through the Bi-Directional meter. In the Bi-Directional meter credit will be accumulated if power is exported and this can be adjusted with the monthly power consumption. Excess power can be carry forwarded to the next month and this credit can be accumulated for one year.



In Off Grid system the DC power generated from the solar panel is fed to a DC combiner box from where the power is routed to a solar charge controller. The solar charge controller is responsible for charging the battery to its maximum capacity and also for protecting the battery from over charging. The charge controller can only charge the battery during day time when solar power is available.

The power stored in the battery is then fed to a Inverter which converts the DC power to AC power, this is in turn used to power the appliance. Since there is no utility grid this system is completely dependent on solar power only, hence the battery bank for the off grid system will be large compared to other system types.



Solar SCADA systems log and monitor data from meters, inverters, weather stations, trackers, DC strings and substation equipment. Solar system engineer can determine when to deploy technicians to resolve any issues by analyzing the SCADA data.” SCADA systems in the solar substation enables to collect and analyse Device-level analysis, Tracker angle, Satellite weather/forecasting, Meter, Billing, Documentation.

The plant operational data collected at the SCADA makes sense to incorporate advanced analytics and performance management functionality into the same SCADA system rather than add external systems. This reduces overall operational costs. On top of this, collecting data in real time allows to improve the efficiency of the plant to be more readily addressed.

Lennart uses PV Syst software in designing the solar system and also engineer, procure, supply, integrate, test, install and commission the solar system with SCADA and undertakes AMC of system that we have supplied.



Lennart Solar street light are the most economic, reliable and versatile means of providing street lighting. Built in Automatic cleaning arm wipes the dust off the solar panel every day keeping the solar panel at optimum efficiency. The economic advantage of solar lighting is very clear-deploying a solar light requires no timely and often costly overhead or underground electrical wiring. Future, not having to provide additional electricity from the grid for lighting avoids the incredible expense of power plants and electrical distribution equipment.



Lennart offers a variety of Solar Water Heating Systems for residential, commercial and industrial with the latest Evacuated Glass Tube technology. Pressurized and non pressurized water heaters with low & high capacity enable the selection of water heater for a particular application

LENNART offers the complete solution whether design and consultancy or an EPC contract upto commissioning of water heater and provide an effective after sales service support and undertake AMC contracts for the efficient operation of the equipment



Lennart offers the Total solutions for the solar water pumping system. We design the solar water pump by thoroughly studying the site and design the capacity of the pump, Number of PV panels, Controller etc. and completely execute the project with an effective after sales service supports.

Lennart offer two type Solar water pumping system

 1.Submersible Water Pumps


Submersible pumps range from field irrigation or supplying potable water, while drawing water from underground water sources like bore-wells or sumps.

2.Surface Water Pumps


Surface pumps range from field irrigation or supplying potable water to your communities, while drawing water from nearby water sources like lakes, ponds, canals or rivers.