Energy Audits


Toronto Energy Audit

Energy Audit

Why us?

• We strive to accomplish our goals of having your industrial plant one of the most efficient in using energy.
• Our engineering team has the resources and knowledge to perform Energy Audit on wide range of industrial establishments.
• Our team is very familiar with the Ontario Power Authority incentive programs.
• Our team is certified energy manager by the “Association of Energy Engineers”
• Our team will complete, submit online and track the all “Applications related for Energy Saving” until your firm receives the funds.
• Our team will ensure that your firm receives all eligible funds from the Ontario Government.
• Our team will establish an energy monitoring process for your firm to ensure wise and efficient energy consumption.

What is an Energy Audit?

An energy audit is a key to assessing the energy performance of an industrial plant in order to develop an energy management program.

WhatIsAnEnergyAudit
Objectives

Objectives

The objectives of an energy audit can vary from one plant to another. However, an energy audit is usually conducted to understand how energy is used within the plant and to find opportunities for improvement and energy saving. Sometimes, energy audits are conducted to evaluate the effectiveness of an energy efficiency project or program.

Incentives

1. Audit Funding:

• The Audit Funding incentive is intended to cover up to 50% of the cost of an energy audit.

• An energy audit is the first step in understanding how energy is being used in your building. This will help you reduce operating costs and improve performance.

• Business customers are eligible for incentives to complete energy audits assessing the potential for energy savings through equipment replacement, operational practices, or participation in Demand Response initiatives and other building systems and envelopes projects.

• We will work together to identify the best and most sustainable energy management program for your business.

2. Incentives for Building Owners

 Conducting this survey and analysis is your first step. This financial analysis, or life cycle analysis, provides you with the data you need to fully consider the financial benefits of installing a variety of energy-efficient measures. Up to $25,000 in Incentives is Now Available

For buildings up to 30,000 sq. ft.: The Incentive is $0.10 per sq. ft. up to a maximum of 50% of Electricity survey and Analysis costs, whichever is less.

For buildings larger than 30,000 sq. ft.: The Incentive is $3,000 for the first 30,000 square feet and $0.05 per sq. ft. for each incremental sq. ft. up to a maximum of 50% of Electricity Survey and Analysis costs or up to $25,000, whichever is less.

3. Incentives for Building Owners:

The incentive is $0.03 per sq. ft. up to a maximum of 50% of the Electricity Survey and Analysis for an eligible tenant costs or up to $7,500, whichever is less. Up to $7,500 in Incentives available for audits of lighting, office equipment and plug loads.

 

Incentives
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The Retrofit Program:

 The Retrofit Program makes is possible for commercial organizations to install and benefit from newer, more energy efficient solutions that will help you operate your business more efficiently and improve your bottom line. Install Energy-Efficient Measures and Earn up to 50% of your Project Costs.

 Incentives are available for high efficiency equipment such as lighting, motors and heating and for installing new control systems to improve the overall efficiency of your building.

 There are three ways to start conserving energy with this program as follows:

a) Prescriptive Track

The Prescriptive track gives you the ease of selecting from a defined list of end-use measures that come with a corresponding per-unit incentive.

Examples include upgrades to lighting, motors, unitary A/C, etc. If your project involves upgrading existing equipment, the incentive amount would depend on the type, efficiency and quantity of equipment you install.

b) Engineered Track

The Engineered track consists of a series of pre-set calculation worksheets that help you estimate reductions in peak demand and/or electricity consumption that apply to the installation of more energy-efficient equipment or solutions.Based on the reductions in peak demand and/or electricity consumption, the worksheet will calculate the incentive amount.

c) Custom Track

The Custom track is available for more complex or innovative solutions not covered in the Prescriptive or Engineered track, and not on the pre-defined list. Technology, equipment and system improvements are evaluated on their demand and energy-performance. Incentives are paid after installation, and once the savings have been measured and verified.

Our Process

The energy and demand balances for a facility are an accounting of the energy flows and power used in the facility. These balances allow the energy analyst to track the energy and power inputs and outputs (uses) and see whether they match.

A careful energy analyst should perform energy and demand balance on a facility before developing and analyzing any energy management recommendations. This way the analyst can determine what the largest energy users are in a facility, can find out whether all or almost all energy uses have been identified, and can see whether more savings have been identified than are actually achievable.

Making energy use recommendations without utilizing the energy and demand balances is similar to making budget cutting recommendations without knowing exactly where the money is currently being spent.

When we perform an energy survey (audit), we inventory all of the major energy-using equipment in the facility. Then we list the equipment and estimate its energy consumption and demand using the data gathered at the facility such as nameplate ratings of the equipment and operating hours.

We develop our energy balance by major equipment category such as: lighting, motors, HVAC, air compressors, etc. We also have a category called Miscellaneous to account for loads that we did not individually survey such as copiers, electric typewriters, computers, and other plug loads. We typically allocate 10 percent of the actual energy use and demand to the miscellaneous category in the demand and energy balances. (For an office building instead of a manufacturing facility, this miscellaneous load might be 15 to 20 percent). Then we calculate the energy and demand for each of the other categories.

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Lighting

Components We Analyze:

Lighting

The first major category we analyze is lighting because this is usually the category that we have the most confidence in for knowing the actual demand and hours of use. Thus, we believe that our energy and demand estimates for the lighting system are the most accurate, and can then be subtracted from the total actual use to let us continue to build up the energy and demand balance for the facility.

We record the types of lamps and number of lamps used in each area of the facility, and asks the maintenance person to show us the replacement lamps and ballasts used. With this lamp and ballast wattage data, together with a good estimate of the hours that the lights are on in the various areas, we can construct what we believe to be a fairly accurate description of the energy and demand for the lighting system.

Air Conditioning & Heating

There is generally no other “easy” or “accurate” category to work on, so we proceed to either air conditioning or motors. In most facilities there will be some air conditioning even if it is just for the offices that are usually part of the industrial or manufacturing facility.

Many facilities are fully air conditioned. Electronics, printing, medical plastics and devices, and many assembly plants are common ones that we see that are fully air conditioned. Boats, metal products, wood products, and plastic pipe manufacturing facilities are most often not air conditioned.

Air conditioning system name plate data is usually available and readable on many units, and efficiency ratings can be found from published data, or from the manufacturers of the equipment.

Motors

Turning next to motors, we begin looking at one of the most difficult categories to deal with in the absence of fully metered and measured load factors on each motor in the facility.

Very few energy auditing organizations can afford the time and effort to make long-term measurements of the load factor on each motor in an industrial or manufacturing facility. Thus,estimating motor load factors becomes a critical part of the energy and demand balance, and also a critical part of the accuracy of the actual energy audit analysis.

Motor name plate data shows the horsepower rating, the manufacturer, and sometimes the efficiency. If not, the efficiency can usually be obtained from the manufacturer, or from standard references such as the Energy-Efficient Motor Systems Handbook, or from software data bases such as Motor Master.

Air compressors

Air compressors are a special case of motor use with most of the same problems. Some help is available in this category since some air compressors have instruments showing the load factor, and some have run time indicators for hours of use.

Most industrial and manufacturing facilities will have several air compressors, and this may lead to some questions as to which air compressors are actually used, and how many hours they are used. If the air compressors at a facility are priority scheduled, it may turn out that one or more of the compressors are operated continuously, and one or two smaller compressors are cycled or unloaded to modulate the need for compressed air. In this case, the load factors on the larger compressors may be unity. Using this data on the horsepower, efficiency, load factor and run times of the compressors, we develop a detailed table of compressor energy use and demand for our energy and demand balances.

Other Process Equipment 

Specialized process equipment must be analyzed on an individual basis since it will vary tremendously depending on the type of industry or manufacturing facility involved. Much of this equipment will utilize electric motors and will be covered in the motor category.

Other electrically-powered equipment, such as drying ovens, cooking ovens, welders, laser and plasma cutters are non-motor electric uses and must be treated separately.

Equipment name plate ratings and hours of use are necessary to compute the energy and demand for these items. Process chillers are another special class that are somewhat different from the comfort air conditioning equipment because the operating hours and loads are driven by the process requirements and not the weather patterns and temperatures.

Checking the Results

Once the complete energy and demand balances are constructed for the facility, we check to seeif the cumulative energy/demand for these categories plus the miscellaneous category is substantially larger or smaller than the actual energy usage and demand over the year.

If it is, and we are sure we have identified all of the major energy uses, we know that we have made a mistake somewhere in our assumptions.

As mentioned above, one area that we have typically had difficulty with is the energy use by motors.

Measuring the actual load factors is difficult on a one-day walk through audit visit, so we use our energy balance to help us estimate the likely load factors for the motors. We do this by adjusting the load factor estimates on a number of the motors to arrive at a satisfactory level of the energy and demand from the electric motors.

Unless we do this, we are likely to overestimate the energy used by the motors, and thus overestimate the energy savings from replacing standard motors with high efficiency motors.

After we are satisfied with the energy/demand balances, we use a graphics program to draw a pie-chart showing the distribution of energy/demand between the various categories.

This allows us to visually represent which categories are responsible for the majority of the energy use. It also allows us to focus our energy savings analyses on the areas of largest energy use.

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CONCLUSION

Energy auditing is not an exact science, but a number of opportunities are available for improving the accuracy of the recommendations.

Techniques which may be appropriate for small-scale energy audits can introduce significant errors into the analyses for large complex facilities.

We began by discussing how to perform energy and demand balance for a company. This balance is an important step in doing an energy use analysis because it provides a check on the accuracy of some of the assumptions necessary to calculate savings potential. We also addressed several problem areas which can result in over-optimistic savings projections, and suggested ways to prevent mistakes.

Finally, several areas where additional research, analysis, and data collection are needed were identified. Once this additional information is obtained, we can all produce better and more accurate energy audit results in a form of a Professional Energy Audit Report.