UNDP invites interested and eligible suppliers to submit Expressions of Interest (EOIs) in respect of provision of the goods/service described below. The purpose of the REOI is to identify suppliers that wish to participate in a forthcoming solicitation process.Scope of work: Provision of technical solution: The contractor is expected to provide technical solution to 200 households by 31 October 2025.Key outputs: 1. Solar PV System Deployment – Installation of modular solar PV systems with battery storage and smart nano grids for 200-household cluster. 2. Smart CO2 tracking Module - Use of smart module meter to be used for MRV of GHG emission reduction and carbon credit generation.  Brief Background: The Solar Facility Project in Mongolia aims to transition households in Ulaanbaatar’s Ger districts from coal-based heating to renewable energy, addressing severe air pollution and its associated health and economic impacts. The project will identify and optimize suitable technical solutions for solar PV systems, battery storage, and smart nano grids to drive the shift to clean energy. Additionally, it will create an enabling environment for renewable energy investments, unlock financial instruments for solar energy deployment, reduce risks for private sector participation, and ensure the financial viability of solar energy solutions. The project also prioritizes social equity and gender empowerment.