We provides complete end to end solutions for Green Building Certifications of both new as well as existing buildings.

Green Building Consultancy includes:
• USGBC (United States Green Building Council)
• IGBC (Indian Green Building Council)
• GRIHA (Green Rating for Integrated Habitat Assessment)

Our expertise ranges from a single family residential tower to a multi rise mixed use building. We have covered various categories of green building certifications such as Existing Buildings, Commercial Interiors, Green Homes, New Constructions, Core & Shell Buildings and Green Factories.


We provides energy simulation services as per various green building certification guidelines. In addition to that, we help design teams to understand the performance of their design and assist them to build a more efficient structure and systems. Our team of experts study and analyze the building design and suggest cost effective energy efficient measures.

Other than that, we provide energy simulation services as per ECBC (Energy Conservation Building Code) for Indian projects and EPAct (Section 179D) for US projects also.

We primarily use eQUEST for performing energy simulation for all our projects.


Daylight & Lighting Simulation is utilized to optimize lighting levels inside the building. Optimum day lighting reduces the energy required for lighting building interiors. We perform detailed room-by-room or space-by-space daylight & artificial lighting simulations.

Based on the achieved lux values we recommend optimization of window and skylight dimensions and locations in order to maximize the amount of daylight achieved in the space, uniformity level of the light in the space and to validate the location and spacing of the light fixtures as well as the distance between them.


Maintaining thermal comfort for occupants of buildings or other enclosures is one of the important goals of design teams.

We at E3S, assist our clients to achieve the acceptable thermal comfort values as per ASHRAE and NBC codes. With the help of 3D simulation tools, we analyze the thermal comfort levels considering all interior and exterior loads.


We have a very strong commissioning background for both electrical and mechanical systems. We have complete expertise for providing building third party commissioning services for any kind of New Construction and Existing Operating

Buildings for the following systems:

1. HVAC – Air /Water Side

2. Lighting with associated controls

3. Plumbing Systems

4. Ventilation

5. Pumps/Motors

6. Load Distribution Analysis

7. Power Quality Analysis


Our team has performed several energy audits for all types of buildings such as institutional, university, commercial, IT parks, industries and municipal buildings. Other than buildings we also provide energy audit services for pumping stations.

We have a complete tool library including anemometers, lux meters, DP manometers, temperature sensors, power analyzer and data loggers to work at multiple sites simultaneously. We perform energy audit services for all types of HVAC systems, chiller plants, compressed air pneumatic systems, refrigeration systems, lighting and electrical systems.


Along with Energy, E3S takes care of your facility’s water use also. With the team of experts we carry out the study of water consumption and provides you the most effective ways to reduce your water bills.


We design and manage processes to systematically avoid and eliminate the volume and toxicity of solid waste and materials, conserve and recover all resources and eliminate all discharges to land, water or air that are a threat to planetary, human, animal or plant health.