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Models. Tools.

EEMS consultants use standard, widely-known models and computer programs (DOE 2.2, EnergyPlus, US EPA Portfolio Manager, and others), as well as in-house developed analytical and optimization programs and models. EEMS-developed models include:

Emission Reduction Technologies:
A model for analysis and selection of NOx and Sox reduction technologies for fossil fuel power plants. The model provides a client with ability to select relevant emission reduction technologies as based on fuel quality, power plant type and size, cost of reagents, etc.
A model for selection of NOx reduction technologies for distributed generators driven by internal combustion engines.

Optimization of Central Heating and Cooling Plants Operation:
A family of programs for optimization of CHP facilities including operation of heating, cooling, ice storage and other components. Models also include analysis of potential benefits from the facility participation in different market load modification and peak demand curtailment programs.

Facility Energy Demand Forecast:
EEMS develops and supports customized programs that forecast facility electric- and thermal energy demand on the hourly basis for 48-260 hours.

Commercial Buildings Energy Demand Reduction:
Evaluator is a tool for quick analysis and screening of potential energy saving projects for commercial buildings.

It includes evaluation of technical, financial and environmental aspects of the operation of the existing building equipment and suggestions on potential equipment replacement and schedule changes for more efficient energy use and GHG emission reduction. (Currently, in a beta version)

Under the ENERGY STAR Building Program, the US EPA developed a Portfolio Manager - the tool for benchmarking of the facility performance. It allows organizations to effectively benchmark by tracking and assessing energy and water consumption across an entire portfolio of buildings and further compare building energy performance relative to the national population of buildings with similar characteristics and ambient conditions. If the building performs better than 75 percent of all similar buildings nationwide it may qualify that facility for an ENERGY STAR label.

Although benchmarking provides the facility operator with understanding of the current building performance and potential improvements in energy- and water utilization, it does not identify actual areas for improvements. The user has to conduct further analysis to identify specific upgrade/improvement projects that are usually conducted by trained specialists and energy consultants.

The Evaluator provides ability to the facility owner and/or operator to conduct quick analysis and screening of potential energy saving projects in all areas recommended by the ENERGY STAR Building Upgrade Manual, allowing the building owner/manager concentrate on specific projects that best correspond with the facility's particular needs and goals.

The Evaluator contains several modules which can be used for evaluation of effects of implementation of separate- or combined measures in the following areas:
  1. Lighting
  2. Building and HVAC operation schedules and indoor air set points
  3. HVAC cooling equipment optimization and replacement
  4. HVAC equipment motors upgrade with VFD
In addition to the common improvement areas, the Evaluator is proposing evaluation in two more options for facility energy cost reduction, associated with new opportunities coming from the free energy market implemented in New York State and some other States, as well as with ability to purchase “Green Energy”.  These options are:
  1. Selection of an energy supplier and tariffs, including different suppliers, ESCOs and Green Power;
  2. Participation in different load management programs

Results of analysis include hourly, daily, monthly and annual amounts of used energy and fuel, generated GHG emissions, and energy and fuel costs for different scenarios of equipment and operation improvements determined by the user.

The current Beta-Version of the Evaluator includes the following modules:

1. Building Thermal And Electric Load Simulator
– a program which, with inputs from the facility owner/operator, first creates a building thermal load profile (cooling and heating) and then electric load profile, including loads of all major electric equipment in the commercial building - HVAC, lighting, etc.
The program has an ability to simulate different HVAC set point schedules, outside weather conditions, occupancy schedule, building participation in load curtailment activities and other factors and evaluate impacts of these factors on the building energy consumption and costing benefits.

2. HVAC Set Point Schedule Optimizer
– a program to evaluate impacts of HVAC set points on energy savings.

This program simulates the building thermal load with all its components (heat gains from outside, from occupants, from lighting and from equipment working inside the building) and evaluates correlation between inside air temperature set points and energy use for heating and cooling, providing an opportunity to determine optimum set points schedule for different building operating conditions.

3. HVAC Cooling Equipment Optimization And Replacement Module
– this module provides the user with opportunity to:
a) select the most energy efficient combination of HVAC equipment for certain building and atmospheric conditions and (selection between electric- and steam chillers), and
b) analyze rationale for installation of additional chillers

4. VFD Installation Benefits Evaluator
– a program that evaluates potential benefits of modification of chillers, air handlers, fans and pumps with variable frequency drives by comparing reduction of energy requirements and savings with expenses associated with implementation of VFDs.

5. Energy Tariffs Selector
– this module helps the user to:
a) identify alternative energy and fuel suppliers available in his location, and
b) select the most efficient tariff for his enterprise.
The selection includes different suppliers, ESCOs and Green Power providers.

6. Lighting Optimization Module
– a program that evaluates potential energy savings generated by
a) maximum utilization of daylight instead of electric lighting, and
b) replacement and/or renovation of the existing lighting equipment with modern and more efficient lighting technologies and commercial products, such as new bulbs, ballasts, sensors, etc.

7. Peak Demand and Load Modification Module
– this program assists the user with evaluation of peak load and demand modification programs available in the NY State and suggests him in most economically efficient utilization of the facility peak reduction resources. Although it is built now only for NYS, the program might demonstrate benefits of such programs in other states, and by the user's request can be modified to reflect actual programs available in the user’s State.

8. Facility Emission Footprint Indicator
– a block which demonstrates total emissions of NOx and CO2 associated with the facility operation in each of evaluated modes.

The Evaluator presents results for different equipment and operation scenario evaluation as compared with the base case scenario.

All calculations are performed using actual user’s energy tariffs - therefore they will be comparable with Portfolio Manager benchmarking results based on real energy metering information.

In the current Beta-version, all tariffs are for 6 New York State counties, but by the user’s request real local tariffs can be utilized.

Benchmarking results generated by the Portfolio Manager might be used as a base line for potential improvements evaluation. Combined use of the USEPA Portfolio Manager and the Evaluator will benefit a potential user with more knowledge in transition from the benchmarking to the investment analysis.

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Building Energy Savings Evaluator

Before using Energy Saving Benefits Evaluator for Enterprise Customers you must to be registered. Registration is free, and your personal account will be created and activated, just click Registration Form

Once you are registered, you can start using Energy Saving Benefits Evaluator for Enterprise Customers.

Requirements for the program download:

Fast Internet connection and any modern browser (preferably Firefox) is recommended for the program operation.

Building Energy Savings Evaluator Manual
Download - Building Energy Savings Evaluator Manual

Have specific energy efficiency questions?
Contact us today!

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