ISO 50001
Electricity bills are a big cost for business
owners. The good news is that improving efficiency can help reduce the cost of
electricity bills and bring significant benefits to business
people. According to IEA’s 2018 energy efficiency report, energy
efficiency improvements since 2000 have prevented a 12% increase in energy use
in 2017.
From installing LED lighting to upgrading heating
and cooling systems, businesses can implement a range of strategies to lower
their energy footprint and at the same time improve property
value and reduce operating costs. Other solutions include but are not
limited to building sealing and insulation, power factor correction, and
improving the quality of supply. This does not mean that you need to change
some of your expensive assets. However, before acting, you should understand
your energy profile to know which energy reduction strategies will best suit
your business needs. This can be provided by energy management systems.
Here are some reasons why you should have an energy management system for your business.
1.) Know Your Energy Needs
Here’s an energy management strategy that will help
you understand your consumption patterns i.e., when you’re using your energy
most intensely and which kinds of processes or equipment are contributing to
this. You can pinpoint your energy waste with advanced data analytics.
Hence, reduction in your consumption will transform
costs to savings and better your consumption patterns. In addition, if your
business has operations in different locations, energy management systems will
provide benchmarking across your offices/ branches/depots/ shops, etc.
2.) Improve Your Power Factor To Reduce Your Electricity Bill
An energy management system will also show your
active and reactive power data which you will need to understand your power
factor.
Power factor represents the relationship between
real and apparent power.
Power factor is between 0 and 1, and a higher value
means higher efficiency.
There are several types of power factor correction
equipment like capacitors, static compensators, etc. which are used mainly for
reactive power compensation and voltage regulation. Capacitors are generally a
good fit in industries because of relatively cheaper installation costs
compared to other measures. However, capacitors should be designed and sized
properly to avoid the amplification of harmonics (resonance phenomena)
generated by disturbing loads such as arc furnaces, welding machines or
rectifiers. To avoid this, either harmonic filters or static compensators can
be used.
3.) Track Your Energy KPIs To Reduce Your Operational Cost
Building energy performance can also be improved by
effective energy management systems. Different business segments have different
performance criteria; for example, consumption/m2, kWh/occupant rate
for hotels, etc.
The energy management system also enables to set a
target value like targeted electricity consumption/month and targeted
cost/month so that deviations will be easily tracked and identified. In
addition, an energy management system provides a comparison between the
previous and the current situation for energy efficiency assessments and helps
to systematically develop KPIs.
4.) Reduce Your Electricity Demand Charge
A demand charge is a part of commercial bill where a daily charge is
determined by the highest power demand (load) observed during a certain
timeframe during the day in a specified period. It is usually the maximum
demand at a 15- or 30-min interval and calculated on kVA or kW. Your
electricity bill will mostly be influenced by the highest demand for used
energy at this particular point in time.
One of the main reasons kVA demand charges are being
introduced is to encourage customers to improve their power factor. A poor
power factor places higher demands on the electricity network. As you can see
below invoice, the network demand charge in kVA contributes has the biggest
portion of the total electricity bill.
5.) Being Aware Of Your Solar System Health
Owning a solar system will give you a big chance to
reduce your electricity cost and demand charges, but it is very important to
know if your solar system is working as expected.
The energy management system will send production in
real time, so if there is any failure in your system, you will get a
notification and you will not wait for your next electricity bill to take
action.
The energy management system will also give expected
and actual production values to track your system performance for previous and
current periods.
6.) Your HVAC System Is Under Control.
HVAC is one of the biggest energy consuming
equipment and needs to work efficiently.
Heating Ventilation and Air Conditioning (HVAC) is
generally responsible for a significant proportion of total building energy
consumption. A typical system accounts for approximately 40% of total building
consumption and 70% of base building (i.e., landlord)
7.) Energy Consumption In Buildings
- Load disaggregation option of energy management system will provide
more insight about your HVAC and other energy consumed equipment load
details. Reduction in energy use of HVAC can be achieved, and some of the
strategies are:
- Change or clean your HVAC filters
- Identify optimum set points
- Identify energy waste times