This document discusses zero-energy buildings (ZEBs). It defines ZEBs as buildings that consume zero net energy on an annual basis by producing as much renewable energy as they use. The document reviews literature on ZEB definitions and focuses on topics like energy sources, supply systems, and renewable energy options. It also discusses concepts like net zero site energy and net zero emissions. The document outlines strategies for achieving zero energy and provides examples of current ZEB projects. It concludes that ZEBs are the future but require understanding and contribution from all to reduce energy consumption.

1. GUIDEDE BY :- SHAILESH KATARIA
MAHAVIR SWAMI COLLEGE
OF ENGG. & TECH.
PATEL PATIK B. 131110106089
PATEL YASH R. 131110106098
SHAH NAISHAL 131110106109
THUMMAR PRITESH R. 131110106119
CHAVDA VIVEK L. 131110106127
PRESENTED BY :-

3. Project Aim :-

4. ABSTRACT
A zero-energy building, also known as a zero net energy (ZNE)
building, net-zero energy building (NZEB), or net zero building, is a
building with zero net energy consumption, meaning the total amount
of energy used by the building on an annual basis is roughly equal to
the amount of renewable energy created on the site or in other
definitions by renewable energy sources elsewhere. These buildings
consequently contribute less overall greenhouse gas to the
atmosphere than similar non-ZNE buildings. They do at times
consume non-renewable energy and produce greenhouse gases, but
at other times reduce energy consumption and greenhouse gas
production elsewhere by the same amount. Traditional buildings
consume 40% of the total fossil fuel energy in all over the world and
are significant contributors of greenhouse gases.The zero net energy
consumption principle is viewed as a means to reduce carbon
emissions and reduce dependence on fossil fuels and although zero-
energy buildings remain unco

5. Literature Review
The following is a review of literature related to ZEB
definitions and research projects. There viewed literature is divided
into a number of main important topics for the discussion of ZEB
definitions.
1. Energy focus
Total energy demand in the building is a sum of thermal and
electricity demand; however, many studies focus only on one
demand neglecting the other. This issue is raised by Able, (1994):
“Many low-energy building projects seem to have been based on the
idea 'decrease heat supply at any cost'. In some cases, this has
resulted in 'zero-energy buildings' which, it is true, do not need any
heat supply but do, instead, indirectly need electricity, e.g., to operate
the heat pump included in the system.”

6. 2 . Energy Supply system
The scientific publications focus either on off-grid ZEBs or
on-grid ZEB. The main difference between those two approaches
is that, the off-grid ZEB does not have any connection to the
energy infrastructure, thus it does not purchase energy from any
external sources, and the boundaries for the balance calculations
are within the building. The on-grid ZEB, in the literature also
named “net zero” or “grid connected”, is the energy producing
building connected to one or more energy infrastructures;
electricity grid, district heating and cooling system, gas pipe
network, biomass and bio fuels distribution networks. Therefore,
it is has a possibility for both buying and selling energy from/to
the utility grid. This division is also well noticeable in the ZEB
definitions.

7. 3. Renewable energy options
In a ZEB definition it is necessary to define the supply-
side of the renewable energy sources. According to Torcellini,
et al. (2006) there are two options: on-site supply or off-site
supply. Within the on-site supply authors distinguish building
footprint and building site. Within the off-site supply the
building either uses RES available off-site to produce energy
on-site, or purchase off-site RES.

8. TOTAL ENERGY CONSUMPTION
DIAGRAM

10. ZEB CONCEPTS
1) Net Zero Site Energy
2) Net Zero Source Energy
3) Net Zero Energy Costs
4) Net Zero Energy Emissions

16. WHY ZEB ?
• Reduces Energy Consumption
• Reduces Green House Gases (Carbon Emissions) & Global
Warming
• Reduces Dependence on Fossil Fuels
• Reduces Ozone Depletion
• Reduces Climate Change
• Protects Our Environment for Future Generations

17. ZERO ENERGY STRATEGIES

18. Strat
Energy demand
Load demand
Air flow
simulation
Colling load
Renewable
sources
identification
Economical and
environmental
benefits
Maintenance
Reneweable
resources
Climate
analysis
Methodology

19. Process of construction

20. Current Status
Development Efforts:
• The Google photovoltaic campus
• The Microsoft 480-kilowatt photovoltaic campus
• Zero Energy Home model for India presented by
3C company at Acres 2011

21. • India’s first net zero energy building
• Constructed with adoption of solar passive design and energy-efficient
building materials.
• Building boasts an earthquake-resistant structure with a total plinth area of
31,488 sq. m.
• More than 50 per cent area outside the building is a soft area with plantation
and grass.
• The building has a robotic parking system in the basement that can
accommodate 330 cars.
• Thin-client networking system has been provided instead of conventional
desktop computers to minimise energy consumption.
• Design allows for 75% of natural daylight to be utilised to reduce energy
consumption.
• Installed capacity of 930 kW peak power, the building has the largest
rooftop solar system among multi-storied buildings in India.
• Union environment minister Prakash Javadekar showcased the building to
United Nations secretary general Ban Ki-moon on 13/1/15
The Indira Paryavaran Bhavan.

22. Conclusion
With the advancement in renewable
technology, Net Zero Energy Buildings are the
future. Many governments have framed Zero
Energy building laws. Few governments are also
providing subsidies to individuals and
organizations for creating Zero Energy Buildings.
But the goal of zero energy buildings would not
be fulfilled till the time all the people don’t
understand their responsibility and contribute
towards reducing energy consumption.

23. Future Planning
• Find the commercial Building in next few day
• Case Study for this commercial Building
• Convert this Commercial Building in NZEB and
compare the Costing and give advantages for N

26. Thank you for
watching….