1 (800) 971-1124

AEI RCx, ReCx and M&V

Performing a major renovation, re-commissioning or retro-commissioning of your facility? Do you need to measure and verify an installed ECM?

AEI can support your next re-commissioning or retro-commissioning effort with a rapid-response and low-intrusion deployment to establish baseline values, confirm calibrations, and verify the performance of the installed energy conservation measures.

We leverage a building's existing Building Automation System (BAS) data to confirm compliance with standards to determine when the BAS sensors meet the accuracies specified in the standards and are properly located.

We are agnostic to the building automation systems that you might have installed. Our energy data connectors can read and import data from all popular energy management systems such as Honeywell Niagara framework, Johnson Controls Metasys®, Alerton, Carrier, Automated Logic and other solutions that use a Tridium JACE. We seamlessly collect data from middleware providers such as SiteSage and SkySpark. When necessary, our partners at Connexx Energy provide a middleware solution to perform a discovery process on a BACnet network for rapid assimilation of all the sensors and their functional roles, including the assignment of Haystack metadata tags.

When calibrated portable loggers are periodically used to confirm compliance with standards, AEI can merge this data with the BAS data to establish a relationship between BAS instrumentation and calibrated data sources.  This relationship can be used to identify calibration issues prior to measurements taken at the minimum recommended frequencies.

For the analysis of complex systems, the AEI Commissioning process includes presentation of your data in an AEI Flatcube which is a powerful way to examine the simultaneous conditions over time for larger assets with dozens of sensors. For an average air handler with many temperature sensors, motors, fans and dampers, there is no better way to examine weeks and months of historic interval data to unravel the cause and effect of faults and how the system is reponding to external inputs. With command and feedback sensors, you can tell that commands are properly executed. With day and time channels you can determine that the system is operating in the proper configuration during off-peak hours. With this simple interactive presentation, you determine the rules and can quickly see that the system data is correctly following the program.

Below are just a few examples of areas where BAS data can be used to ensure compliance:

ASHRAE 90.1 — Energy Standards for Buildings Except Low-Rise Residential Buildings

AEI presents BAS trend data in a manner demonstrating control sequences conform to ASHRAE 90.1 such as:

  1. Economizer control
  2. Hotel guest room HVAC set-point control
  3. Heating/Cooling setback controls
  4. Simultaneous heating/cooling conditions
  5. Supply air temperature re-heat limits
  6. Two pipe changeover dead band
  7. VAV static pressure set-point reset
  8. Hydronic system differential pressure reset
  9. Chilled and hot-water temperature reset
  10. Condenser fans controlled in unison
  11. Dry-bulb and wet-bulb condenser reset (2016)

AEI can utilize BAS data or separately installed sub-metering equipment to measure and present electric chilled water plant efficiency as required by ASHRAE 90.1-2016.

ASHRAE 62.1 — 2013 Ventilation for Acceptable Indoor Air Quality

Outdoor Air Dampers and Actuators

AEI will analyze BAS trend data to meet the ASHRAE 62.1-2013 minimum maintenance activity for "Outdoor air dampers and actuators" and "Visually inspect or remotely monitor for proper function" ... "In accordance with the O&M Manual or every 3 months."

CO2 Sensors

According to ASHRAE 62.1-2013, "sensors whose primary function is dynamic minimum outdoor air control shall have their accuracy verified ... at a minimum once every six months or periodically in accordance with the O&M manual"

CO2 sensors used for Demand Control Ventilation are notorious for being out of calibration.  Sensors reporting data inconsistent with expected values during the unoccupied hours are easily identified. Accuracy during occupied hours can be confirmed when calibrated CO2 loggers are placed in close proximity to the BAS CO2 sensors.  Data from the calibrated logger is compared to the BAS sensors in the AEI database and discrepancies are noted.

ASHRAE 55 — 1992 Thermal Environmental Conditions for Human Occupancy

In addition to the required environmental measurements taken to confirm conditions for human occupancy, Section 7.4 recommends additional measurements are taken concurrently to help determine appropriate corrective actions if required.  AEI will merge additional BAS data with the environmental-logger measurements to identify underlying issues preventing compliance with ASHRAE 55.

FEMP 4.0 M&V Options A, B, C and D

In addition to providing all the regressions necessary for Option C, AEI can present trend data in the appropriate format to support Options A, B and D.

FEMP 4.0 recommends using EMCS (Energy Management Control System) data for either Post-Installation or Performance Period measurements for many EMCs (Energy Conservation Measures) such as (1) new/upgraded BAS, (2) Variable Air Volume conversion, (3) central plant upgrades, and (4) RetroCommissioning/ ReCommissioning.  Items recommended by FEMP to be monitored through the BAS include run hours, set-points, setbacks, reset schedules, equipment power draw, fan flow, fan supply & return temperatures and electric & gas consumption.


New AEI Energy Maps Just Released

We've just released public versions of our AEI Energy Maps for Los Angeles, San Francisco, New Orleans and others built in partnership with the U.S. DOE Better Communities Alliance.

Visit the AEI Energy Maps page

AEI Featured on Energy Matters 2U Podcast

AEI was recently featured along with Leidos on an Energy Matters 2U Podcast. During the 20 minute conversation, Carl Popolo of AEI and Ron Gillooly, Leidos' Industrial Energy Program Director, discussed how a building's energy data profile combines with a physical audit to target efficiency measures that have specific and verifiable results.

Listen to the Podcast

AEI To Provide Energy Maps to U.S. DOE Better Communities Alliance

AEI is pleased to have been selected as an Affiliate to the U.S. Department of Energy Better Communities® Alliance. AEI is committed to provide its Energy Map solutions to selected partners from a list of 40 noteworthy cities such as Atlanta, Chicago, Denver, Houston, Los Angeles, Miami, New York and San Francisco.

Read More

AEI Selected as MHEC Supplier

June 29, 2017 -- Carlisle, MA -- AEI has been selected as a Massachusetts Higher Education Consortium (MHEC) supplier to provide Facility Maintenance and Energy Assessment Software to MHEC members through June 2020. The letter from MHEC reads: "Your bid response was evaluated and determined to be the most responsible and responsive bid that offered best value to MHEC members".

Read More

Whole-Portfolio Real-Time Main Metering

AEI brings to market a whole-portfolio real-time main meter view of cities, towns and campuses by combining our AEI Soft Start Real-Time technology with our proven Energy Map visualization platform.

For the energy manager who needs to see energy use across the entire building stock in real-time, this affordable solution shadows the utility main meter, requires no BAS integration, feeds upstream applications such as kiosks, and gives the manager real-time insight into demand response opportunities on their own terms. With 1-minute resolution, rolling profiles and SMS and E-Mail alerts, this integrated solution can also help control billing-period peak usage. It's completely incorporated into our Energy Map platform for exploring historical usage, and that means one-stop-shopping for your energy team to study utility trends, track sustainability goals, and to know your real-time position for social awareness and real-time response.

Explore the Demo

The Bigger Apple: City of New York Energy Map

Building on our work last year to deliver an Energy Map of the City of Boston, we figured we should demonstrate a little scalability and bite on something bigger. The result is our City of New York Energy Map that combines data from the PLUTO and LL84 disclosure reporting datasets and shows electricity, natural gas, oil, steam and water consumption for over 13,000 properties with a combined GSF of over 1.8 billion ft2. The data includes GHG emissions, and for most properties we're able to show trends since 2011.

Read More in News

AEI on Twitter

AEI Commissioning

Are your buildings running efficiently? Let's look at the data and prove it to the managers who pay the utility bills. Efficiency problems? Download the AEI Commissioning Services brochure to see how we can help.