Energy Management System (EMS)

Start your journey to lower energy bills and a smaller carbon footprint with OAK's Energy Management System (EMS). Request your free savings estimate now and tap into the benefits of advanced energy efficiency.

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What is an Energy Management System?

An Energy Management system (EMS) is designed to manage and reduce a business's energy consumption. An EMS not only displays and provides an overview of your energy consumption data, but also helps identify opportunities to save. This can be in the form of:

- Behaviour improvement to lower energy usage
- Identifying appliances which require maintenance
- Implementing energy-saving technologies

Most energy management systems require extensive staff training to successfully lower energy usage. However, at OAK, we focus on analysing and turning the data into actionable ways to reduce energy consumption and costs. This way, you can get all the benefits of an EMS without any technical training.

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In-depth monitoring

How does an Energy Management System work?

An EMS works by collecting live energy usage data from the source (energy meter or individual appliances) to analyse a business's energy consumption patterns, generally using AI or smart algorithms. The system then displays this data on a visual platform, turning complex data into simple, actionable insights.

EMS solutions like Oak are the foundation of reducing energy consumption. We make the once impossible job of live data collection part of your team's day-to-day, incentivising savings to lower energy usage and operating costs.

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Types of Energy Management Systems

Rule Based energy management systems
These systems are reliant on previously programmed logic to make decisions on how to control energy consumption. Rule based EMS are used for straightforward businesses where a few rules are enough to govern how the energy management system should operate. This ensures operational stability as long as there are no new or unpredicted consumption patterns.

Forecast-based energy management system
A forecast-driven EMS is the next advancement, this offers solutions for more complex scenarios that traditional rule-based systems struggle to handle. Its core mission? Elevating profitability. Using more complex computations to take into account other factors such as the spot price of the market, charge status of a battery or current generation of a Solar PV system. Its forecasting strategies include more considerations and model types, which are transformed into suggestions for saving energy.

Cloud based EMS solutions
Cloud-based EMS software is the current cutting-edge technology of energy management systems. They revamp how energy management is done, as they are capable of adapting and optimising any business type regardless of industry while benefiting energy consultants and utility companies from its advanced often AI-driven analytics and forecasting.Cloud computing enables real-time access to consumption and recommendations from anywhere in the world, allowing a single person to be able to manage multiple sites regardless of geographical location. It includes flexible integration of IoT, advanced algorithms, real-time reporting and most importantly real-time actionable optimisations.

Benefits of an EMS

zero budget required

Real-time alerts notify you of any wastage:

This feature allows businesses to identify and address inefficiencies immediately, preventing unnecessary consumption and reducing costs. Each alert acts as an opportunity for savings, enabling you to make quick adjustments, such as turning off unnecessary lights or repairing malfunctioning equipment, leading to lower energy bills and improved operational efficiency. This immediate feedback loop not only helps in reducing overheads but also supports environmental sustainability goals by minimising unnecessary energy use.

Types of Alerts:
Predictive maintenance
Equipment left on
Drop in equipment efficiency
Procedures not held
Behaviour improvements
Appliance upgrades
Optimisation based on Agile Tariff & Generation

data and Safety

Reduce Costs

A great energy management system will pay for itself within the first 18 months through the savings it helps you make while being affordable in the first place. We use a state-of-the-art AI & Machine Learning Algorithm alongside expert energy data analysts to identify energy waste within your site. Our members receive data analysis based on current and historical data to gain a competitive edge and improve efficiency. Here are some examples of how we've helped Oak members save costs with our EMS solution:
Identified a way to optimise HVAC system saving a large office building ˜£3,000 per month

  • Spotted Misuse of CNCs in a UK Leading Manufacturer saving £300 per week
  • Optimised Cooling consumption of Hospitality Venue saving 32% on cooling
  • Identified a malfunctioning HVAC system saving 22% of its total consumption after maintenance
  • Shared Office Space reduced floor consumption by 29% due to OAK recommendations
  • Reducing Total site consumption by 16% for a large logistics provider
All in One Solution

All in One Solution, solving compliance needs too.

Simplify complex data with a single solution which can solve your energy goals: saving energy cost, providing compliance reporting, control & visibility of real-time consumption, energy tariff optimisation, tailored reporting, data-backed Capex Recommendations, financing and much more.

Fulfil your compliance reporting from an energy perspective as we automatically provide you with the required information you need to report on. This also includes per-unit reporting, which is required for certifications such as ISO50001. We can provide you relevant information for the following compliance reporting:

Future-proof your energy and get ahead of the
curve all while saving costs.

  • ESOS
  • SECR
  • ISO 50001
  • And more...
All in One Solution

Lower Carbon Emissions

Not only does saving energy save you £££s but it also saves CO2. With an EMS like OAK, you can quantify how much CO2 your optimisations are saving you down to the kilogram. This is possible as every kWh has an attributed CO2 emission which varies from supplier to supplier. For example, the HVAC system optimisation from above (with an assumed tariff of 0.35p) translates to ˜8,500 kWh, equivalent to approximately 2,125Kg of CO2 depending on the supplier.

This is the equivalent of the emissions per passenger of a flight from London to Boston (USA) and back!

U.S. Environmental Protection Agency, Emission Factors for Greenhouse Gas Inventories. Accessed March 10th, 2024.


Manage Your Energy Usage with Real-Time Data

With Real-time data it takes all the guess work out of the picture, as you can now make decisions based on live consumption. At OAK, we take care of all the data crunching for you so that you can focus on taking action to improve energy efficiency, save on energy costs and ensure optimal operation of your site with ease of mind.

Excessive usage alerts

Receive alerts whenever your consumption exceeds normal levels and keep up-to-date with the performance of your business.

Alert Trend Analysis

Predictive Maintenance

Get notifications when your equipment needs maintenance to prevent unexpected costly breakdowns potentially causing thousands of £££ in lost revenue.

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Bill Validation

With our solution you can now recognise instances of overcharging, consolidate records into a single location, and forecast for future invoices.

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Site Performance Reports
Monthly, Quarterly and Annualy

We deliver a bespoke analysis of your site, deep diving into each appliance to identify energy savings potential and optimisation opportunity. All while providing you with neccessary compliance & performance reporting delivered directly to your email inbox.

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A Tailored Dashboard to meet different needs

Management & operations receive their separate accounts so management gets clear oversight while operations deals with the day-to-day insights.

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Industry Benchmarking

Assess your business efficiency performance by anonymously comparing it to other businesses in your industry.

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Use Cases


We can establish optimal green infrastructure projects with your ideal ROI and payback period, making a data-backed case for 3rd party financing via your bank or OAK’s trusted partners.

Financing Options

Equipment Monitoring

Separate accounts for business owners and their management teams.

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Live Overview of your consumption

With OAK, you will know exactly how much energy is being consumed by each venue of your business down to the equipment within that venue. Providing you a digital twin of your business and leaving no stone unturned. We also provide live alerting based on our AI algorithm which identifies and notifies you of anomalies and what is the most likely cause with a proposed action.

Make informed decisions where to invest

Accurate Real-time data provides the foundation for data backed decisions, not only for improving efficiency but also for CAPEX upgrades. This includes everything from: Solar panels, voltage optimiser, LED, Battery storage, Heat pumps etc. We provide you with the data to make the right decision for your business along with financing options to make your ESG journey more budget friendly.

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FAQ about EMS

What is the difference between EMS and Scada?

A SCADA (Supervisory Control and Data Acquisition system) is primarily used for monitoring and controlling real time data, whereas an EMS uses the data generated by a SCADA for analysis. However, an EMS has a broader scope and focuses on managing energy consumption across organisations.

What is ISO 50001 energy management system?

A ISO50001 energy management system is an EMS that collects the required information to fulfil the reporting requirements of ISO50001, this is not a specific system. ISO50001 requires a few set KPIs to be reported along with action plans to improve energy efficiency.

OAK provides you provides the necessary information to comply with certifications like ESOS, SECR, ISO 50001, ISO 14001. This includes key information like Peak hours, Peak consumption, average consumption, consumption of your SEU (Significant Energy Users), Total CO2, CO2 per Unit… etc.

Guiding your journey to net zero as well as controlling the operational costs which are incurred. OAK is the practical way to do EMS (Energy Management System) as we analyse and dig deep into the data to find the most valuable action items for you to take forward.

What are the 3 parts of energy management?

  • Gateway or Hub: which collects data from the machine or main meter
  • Software: This is where the analysis happens, these are all the algorithms in the background which allow you to take informed decisions.
  • Platform: a platform that enables users to visualise the data being collected as well as receive the information in a format so that they can best decide on how to take action, this includes historical data, KPIs, targets, recommendations etc.

Are energy management systems worth it?

The benefits of an EMS far outweigh the investment costs. Studies conducted by the Carbon Trust indicate that for every £1 invested in an EMS, businesses can expect an average return of £4 to £6, which is beyond amazing. Moreover, the long-term cost savings achieved through reduced energy consumption and improved efficiency can turn out to be potential game-changers for your business.

What are the problems with energy management?

Actionable Insights
The usual problem with Energy management is to identify the actual action to take to optimise the consumption. Most EMS specialise in identify in anomalies but not in the precise action on what to do to reduce it.

Many EMS systems are not able to identify the root cause as they are reliant on the smart meter data or just main meter consumption, this does not allow them to understand the consumption of equipments.

Limited resources to monitor alarms
Alarms are a huge benefit of EMS however there can be hundreds of alarms across your portfolio, this usually causes confusion and irritation as not ever alarm is accurate
Case study

Electricity Optimisation for a Manufacturer

An industrial manufacturing company was experiencing a significant increase in their electricity bills, despite a great electricity rate. They struggled to identify the underlying cause of their escalating costs, as their energy consumption kept increasing.

That’s when they decided to partner with OAK Network to conduct an electricity optimisation analysis. OAK’s team of experts performed a comprehensive review of the client’s energy usage and identified several areas where they could reduce their energy consumption and costs.

Potential Annual Savings




The recommendations provided were customized to suit the specific energy needs of the manufacturing industry and aimed to assist in achieving optimal energy savings.
Once the energy-efficient solutions are implemented, OAK Client should see a significant reduction in their electricity consumption and costs. An impressive £60,008 of annual savings are predicted to be achieved.

OAK’s solutions will also help manufacturer to reduce their carbon footprint and promote sustainability, aligning with the company’s corporate social responsibility goals.

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Case study

Electricity Optimisation for Shared Office Space

In this case study, we explore how OAK Network helped a shared office space identify their energy savings potential. With multiple businesses operating within the building, energy usage was a significant expense that needed to be addressed.

By conducting a thorough energy audit, OAK was able to pinpoint areas of inefficiency and waste. The audit results revealed that shared space owners were wasting around £100 per day, leading to an annual wastage of £37,000.

Potential Annual Savings




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Case study

Electricity Optimisation for Hotel

As energy costs make up a substantial part of operational expenses, reducing electricity consumption is a crucial concern for the hospitality industry. In the context of this case study, the hotel’s annual electricity consumption is expected to be around £360,000.

To address this concern, the hotel’s management is collaborating with OAK to implement various measures that will help reduce electricity wastage. The hotel’s commitment to operating sustainably is reflected in their daily actions, which are now supported by live data visible on OAK Insights.

Potential Annual Savings


£ - 1,4 THOUSAND

CO2 - 1,2 TONNES

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OAK Report

OAK Report - Example

As rising electricity costs continue to impact the hospitality industry, OAK is here to help establishments address this challenge. Our cutting-edge OAK Intelligence platform provides businesses with the tools and insights they need to optimize their electricity usage, reduce costs, and improve profitability.

With our expert guidance and support, establishments can implement energy-efficient measures, adopt renewable energy sources, and achieve maximum cost savings.Experience the OAK insights by downloading our report example below.

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