Helpful Links

Asset and Portfolio Analysis

Goal and Scope

User’s Guide

Asset-Level Analysis

Portfolio-Level Analysis

Settings

Methodology

Energy Use Modeling

Carbon Emissions Modeling

Cost Modeling

CRREM

LL97

Glossary of ECCMs

SRI/EPC Estimator

Goal and Scope

User's Guide

Methodology

For each asset, there are multiple scenarios. Each scenario describes the energy, carbon, and cost implications of implementing of one or more Energy and Carbon Conservation Measures (ECCMs).

Abbreviated descriptions of each ECCM can be viewed in the application by hovering over the information icon. Full descriptions of each ECCM are below.

ECCM Descriptions

1. Building Management System (BMS)

EcoStruxure Building Activate

Ecostruxure Building Operation

2. EcoCare for BMS

(formerly EcoStruxure Building Advisor)

This measure is applicable to large buildings (more than 10,000 m2 or 100,000 ft2). For small/mid-sized buildings (less than 10,000 m2 or 100,000 ft2), EcoCare for BMS is included in the Ecostruxure Building Activate offer. EcoCare for Building Management Systems (formerly EcoStruxure Building Advisor) is a digital service that utilizes continuous commissioning of HVAC systems to identify and recommend operational improvement opportunities. This service is assumed to decrease energy consumption based on the following, as has been demonstrated by past deployments:

This measure currently conservatively quantifies the energy reduction and associated operational carbon reduction from leveraging fault detection and diagnostics to detect equipment and system performance issues and prevent performance degradation, it does not currently include the associated embodied carbon impact of extending equipment life.

3. Power Management

4. Ecostruxure Power Operation

Power operation is monitored using EcoStruxure Power Operation and allows for manual adjustments to operations to optimize power management. It identifies unused capacity and avoids unplanned downtime. Estimated 3% annual electricity savings based on manual operational adjustments.

5. Lighting Upgrade

The replacements of existing incandescent lamps throughout the building with high-efficiency LED lamps. Based on literature values and internal SE data, this measure is assumed to lower energy demand for interior and exterior lighting by 40%.

6. High-Efficiency Uninterruptible Power Supply (UPS)

Installation of three-phase modular UPS system with lithium batteries. UPS systems are resized based on measured loading and efficiency is optimized. UPS systems are available for essential medical equipment in ORs, laboratories and radiology department. Hospital Prototype model does not include a server room.

7. Power Factor Correction

Typical power factors for commercial buildings are around 0.86. The addition of Power Factor Correction (via Accusine EVC Plus or similar) can raise the power factor to 0.96 (or 0.98 if accompanied by an upgrade to the building's distribution system).

Power factor correction is important as a strategy for avoiding fines from local utilities assessed on buildings with low power quality. Fines for low power quality are not explicitly modeled within the Building Decarbonization Calculator as there is significant regional variation.

A power factor correction will not affect the site energy use in the building or energy costs on a per-unit (price per kWh) basis. By reducing the upstream demand for electricity necessary to serve the end uses within the asset, power factor correction is a potent carbon reduction measure.

8. Microgrid (Solar PV and Battery Storage)

Addition of microgrid controller with onsite solar photovoltaic array and on-site battery storage. Buildings are equipped with MicrogridFlex and rooftop PV systems to generate power on-site and store for use during high carbon emissions from grid energy. This ECCM uses WattTime hourly short-term marginal emissions rate data as a signal for high grid emissions. The PV system is sized to 70% of the rooftop area, assuming 16% efficient power panels where 1m2 receives 1kWh of solar radiation, in line with PVWatts guidance. Power production was calculated using PVWatts. Battery Energy Storage System (BESS) has a roundtrip efficiency of 86% and fully discharges in every 24 hours.

9. Electrification

Electrification includes the electrification of all heating to air-source heat pump systems, domestic hot water to electric resistance or heat pump water heaters, and the installation of the associated electrical distribution equipment to serve these new electrical loads. SE offers a wide range of electrical design and distribution system offers, and their application will vary based on the existing system, level of refurbishment possible vs upgrade required. It is recommended that Etap be utilized for major electrification projects to optimize the new electrical system design.

Distribution Upgrade

As part of electrification, some amount of the distribution system for conditioned air and water is often replaced as well. These upgrades incur a financial and embodied carbon cost.

The tool assumes that these upgrades are done to realize (and not improve) the performance documented in the modeling results. In selecting this option, select the level of retrofit necessary to bring the building up to present-day standards.

10. Envelope Upgrade

Upgrade of the building's opaque envelope to meet the prescriptive requirements of ASHRAE 90.1-2022, and improvement of the building's infiltration rate through an air sealing upgrade.

Insulation Type

The choice of insulation will determine the embodied carbon emissions associated with the envelope upgrade. This choice is assumed to be cost-neutral.

11. Glazing Upgrade

Upgrade of the building's transparent envelope to meet the prescriptive standards of ASHRAE 90.1-2022, and specification of glazing with a lower solar heat gain coefficient (SHGC).

12. AirSeT SF6-free Switchgear

coming soon

Summary Table of ECCM Availability

The following table describes which ECCMs are available for which building use types.

ECCM Hotel (S) Hotel (L) Hospital Office (S,M) Office (L) Supermarket
1. Building Management System (BMS) (Ecostruxure Building Activate or Ecostruxure Building Operation)
2. EcoCare for BMS * *
3. Power Management (EcoStruxure Energy Hub or Power Monitoring Expert)
4. Ecostruxure Power Operation
5. Lighting Upgrade
6. High-Efficiency Uninterruptible Power Supply (UPS)
7. Power Factor Correction
8. Microgrid (Solar PV and Battery Storage)
9. Electrification
10. Envelope Upgrade (legacy)
11. Glazing Upgrade (legacy)
12. Load Shifting and Demand Response
13. AirSeT SF6-free Switchgear (coming soon)

Previous

LL97