Can we specify Xera Tech by name in a government tender?

No - government tenders cannot specify a brand name; they must specify performance parameters. However, you can write specifications so specific (e.g., 'LiFePO4 battery mandatory, MPPT controller mandatory, ERDA test report mandatory, PWD approved manufacturer in Maharashtra') that only quality manufacturers meeting these parameters can bid.

What is the minimum warranty period I should specify in a tender?

Minimum 2 years comprehensive warranty is the industry standard for BIS-certified products. For premium tenders (smart city, NHAI): specify 5 years for LED luminaire and 3 years for battery. Always specify that the warranty is from the manufacturer, not the contractor or trader - this ensures direct accountability.

Should I specify 'all-in-one' or 'semi-integrated' in the tender?

For village roads (20–40W): specify 'all-in-one OR semi-integrated, at manufacturer's design, meeting all performance parameters.' This gives flexibility while maintaining quality requirements. For highways and high-performance applications (60W+): specify 'semi-integrated with separate adjustable solar panel' - this ensures adequate panel area and thermal separation.

How to Write Solar Street Light Tender Specifications - Template Guide

Why Specifications Matter More Than Price

A solar street light tender with only 'wattage' and 'price' as parameters will attract the cheapest imports - lead-acid batteries, PWM controllers, non-BIS products, plastic housings. These fail within 2–3 years and the village or municipality has no legal recourse because the product technically met the (inadequate) specification. A tight specification covering battery chemistry, controller type, efficiency, certifications, and warranty means price competition happens only between quality products - the lowest compliant price is also a good quality product.

Core Technical Specification Template

LED Luminaire: BIS certified (IS 16905 mandatory, cite licence number on product). Wattage: [specify]. Luminous efficacy: minimum 130 lm/W. Colour temperature: 5000–6500K. CRI: minimum Ra 70. Power factor: minimum 0.95. IP rating: IP65 minimum (IP66 for coastal/heavy rainfall zones). IK rating: IK08 minimum. Housing: die-cast aluminium ADC-12 grade. Cover: tempered safety glass minimum 4mm. Driver: from internationally recognised brand (Meanwell, Inventronics, or equivalent). Operating temperature: -10°C to +55°C ambient.

Solar System Specification Template

Solar Panel: monocrystalline silicon, minimum efficiency 20%, wattage = minimum 1.5× LED wattage. Tempered glass, aluminium frame, IEC 61215 and IEC 61730 certified. Battery: LiFePO4 chemistry (mandatory - lead-acid and NMC lithium explicitly excluded). Minimum capacity: [LED wattage × 12h × 1.2] Wh. Minimum cycle life: 2,000 cycles at 80% DoD. BMS (Battery Management System): integrated, with overcharge, over-discharge, short circuit, and temperature protection. Controller: MPPT type (PWM explicitly excluded). Efficiency minimum 97%. Battery type setting: LiFePO4 profile. Dimming: minimum 2-level dimming (100%/50% programmable). Operating voltage: 12V DC system for up to 40W, 24V for 60W+.

Certification and Warranty Requirements Template

Mandatory certifications (to be provided with bid): BIS licence certificate (verify on manakonline.in). ISO 9001:2015 factory certification (from accredited body). NABL or ERDA photometric test report (not older than 3 years). IP test report from NABL lab. Battery specification sheet showing LiFePO4 chemistry and capacity in Wh. Warranty: minimum 2 years comprehensive from manufacturer (not trader) covering: LED luminaire, solar panel, battery, controller, and mounting hardware. Warranty certificate to be in gram panchayat/authority name. Penalty clause: 1% of contract value per week of warranty response delay beyond 14 days.