InSiTE, an Energy Management System (EMS)

ROI, using it & reducing energy costs with it.

Why

monitor

your

Energy

Use?

Detect avoidable energy use that might otherwise remain hidden. Flag up anomalies in consumption e.g. malfunctioning equipment, air or water leaks, or lights switched on overnight.

Reduce Energy Costs

Supporting management strategies e.g. control costs, environmental impacts & meet the requirements of environmental/energy system standards e.g. ISO14001, ESOS etc.

Compliance

Target setting, e.g. to reduce waste per KPI by 5 % per year. Calculate energy and carbon targets rationally to reflect achievableperformance – often, targets are set without consideration of practical application or achievability.

Manage Targets

To support investment appraisal/decisions for equipment upgrades & retrofits. Project verification to ensure that anticipated savings e.g. from a lighting upgrade project have been achieved.

Decision Making

Provide feedback for staff awareness & input, improve budget setting & undertake benchmarking.

Staff Involvement

Saves, or leads the savings of upto 25%

of your energy

bills

Verification

• Maximise energy

efficiency project ROI

by using historical

data/costs as baseline

• Report on actual vs.

projected ROI

• Identify variances to

ROI projections by

data-driven reporting

• Make sure that future

ROI plans use actual

“before” data to

maximise savings.

Protect

retrofit

savings &

generation

income

• Alerts on retrofit

equipment outages

• Alerts when generation

unexpectedly

degrades

• Alerts on budgeted

baseline drift

• Use Alerts to instantly

inform you when your

investments stop

working, earning or

saving.

Manage Demand

• Shift demand from

Peak Tariff times

• Select the best

Demand Reduction

scheme to suit

• Optimise on-site

generation to reduce

export

• Shed or shift non-

essential loads during

peak times

Identify energy waste

• Are your Warehouse or

Office Lights on out of

workhours/weekends?

• Are there Compressor

system leaks?

• Is your HVAC set-up

inefficiently?

• Is the Office equipment

on 24 x 7?

The Envisij ROI = SOI (Savings On Investment)

Play 1. Real Time Monitoring & Verification

5 to 25% savings

Play 2. Real Time Peak Demand Management

3 to 6% savings

Play 3. Automated Demand Response (ADR)

2 to 4% savings, Utility On-Demand

InSiTE, saving via Energy Triple-Play

Play 1. Real Time Monitoring & Verification

5 to 25% savings

Play 2. Real Time Peak Demand Management

3 to 6% savings

Play 3. Automated Demand Response (ADR)

2 to 4% savings, Utility On-Demand

InSiTE, saving via Energy Triple-Play

Triple Play 1: Monitoring & Verification Aim: Reduction of base-load,

leading to 5 - 25% energy savings

Triple Play 2: Peak Demand Management Aim: Reduction of expensive peak demand tariffs,

resulting in 3 - 6% energy bill savings

Triple Play 3: Automated Demand Response (ADR) Aims; generate income from your utility &

assist the stressed grid. 2 - 4% savings.

The Remit. The College wanted to operate a flexible DR scheme that enabled them to change the ADR curtailment

profile “mid-flight”, to either further reduce Central Chiller Plant load, or partially increase building comfort levels.

They also needed the ADR “client” to be able to operate across 3 different BMS systems of various “vintages”.

Triple Play 3: Automated Demand Response (ADR) A case study.

ADR Event Outcome

Max Peak Demand Pre-ADR 900kW

Max Peak Demand during ADR 450 kW

Energy Consumed Pre-ADR event 11.2MWh

Energy Consumed Post-ADR event 10 MWh

ADR Reduced Consumption 1.2MWh

Demand Reduced by ADR event 283 kW

Utility ADR incentive per kW curtailed $10.00 per kW

Savings: $2,830

Reduction: 40%

Point 1: ADR event starts

Point 2: ADR Pre-set State 1 Point 3: ADR Pre-set State 2

Point 4: ADR Event Ends

Outcomes: College Facilities deploys EnergiStream to “drive” the campus BMS in 16 different states across 10 buildings. The BMS was

programmed once. The ADR client portal allows the College to pre-select any programmed state that in turn reduces/increases load on the Central Chiller.DR event reduces Central Plant load by upto 40% during peak demand days, therefore offsetting the need for major upgrades entirely or for aconsiderable period. DR rebate from the Utility also contributes to overall energy savings for the College and technology ROI.

Triple Play 3: Automated Demand Response (ADR) 283 kW load shedding over 3 hours.

InSiTE, what are the component parts?

PowaSOFT Analyst

Secure Cloud database PowaMETER’s PowaMETER CT’s

3rd party BMSPowaROUTER

Software Hardware Sensors

3rd party vendors, e.g. environmental

PowaSOFT SiTE Dashboard,Kiosk, PV Fleet Management & Tenant Billing applications

InSiTE, more detailed component parts.

3rd party meters, gas, water & electricity

POWAROUTER

Pulse outputs or Modbus

Pulse outputs or Modbus

Energy Dashboard

Energy Analytics

CT monitored loads, e.g. lighting, Incomers, HVAC

3

CT monitored loads, e.g. lighting, Incomers, HVAC

6

24

POWAROUTER

BMS

BACnet(I.P or RS 485)

or Relay

InSiTE

PowaMETER type No. of Monitored Phases Modbus TCP/IPPulse

In/OutBACNet

DIN/Wall Mount

Local Display

PowaSOFT Linkable

Control function

PowaMETER 3 3 x 1, 1 x 3 I.P or RS485 Yes In & Out N Both Y Y Y

PowaMETER 6 6 x 1, 2 x 3 I.P or RS485 No In & Out N Wall Y Y Y

PowaMETER 9 9 x 1, 3 x 3, 4 x 3 I.P or RS485 No In & Out N Wall Y Y Y

PowaMETER 12 12 x 1, 4 x 3, Any mix I.P Yes N Y, I.P Wall N Y Y

PowaMETER 24. 24 x 1, 8 x 3, Any mix I.P Yes N Y, I.P Wall N Y Y

PowaROUTER Upto 256 PowaMETER's I.P & RS485 Yes In & Out* Y, I.P or RS485 Both N Y Y

PowaMETER selection options.

Note; All PowaMETER’s provide Volts, Amps, kW, KWh, kVA, KVAh, KVAr & Power Factor information per phase or load/location every minute.* = Pulse input or output. Relay trigger to 3rd party devices, e.g. BMS upon a user set/ADR demand event.

envisij Ltd.6 Birkdale Mews, 15A Liverpool RdSouthport, Merseyside,PR8 4AS, UKE: info@envisij.comW: www.envisij.comT: +44 (0) 1704 741177

M: +44(0) 7833 220535

envisij delivers insightful, understandable & useful energy information to building occupants, executives,

sustainability & facilities teams.

Our Demand Management technology works with building systems to shift or shed energy use especially

during Peak Demand Periods.