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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: [email protected]: 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.