Pursuant of the Energy Management Regulations (2012), every company and institution using more than 180,000kWh (units) annually, or about 15,000kWh (units) monthly of electricity is required to carry out an energy audit every three years as well as:
1. Have a designated energy manager within the facility
2. Prepare their energy management policy that the Energy Regulatory Commission (ERC) will approve
3. Have audit reports as well as an implementation plan submitted to ERC for approval
4. Undertake the suggested Energy Management Opportunities (EMO) and achieve at least fifty percent (50%) of them in under 5 years
You can download the entire document from here (66kb)
The list of registered Energy Audit companies in Kenya can be found here
That of Energy Auditors is here
This move by the Government is aimed at increasing efficiency and is supposed to save us a chunky Ksh.45M that is lost daily because of using poor electrical equipment.
From ISO 50002, an energy audit is defined as the systematic analysis of energy use and energy consumption within a defined energy audit scope, in order to identify, quantify and report on the opportunities for improved energy performance. Essentially an energy audit is a fundamental assessment to help you identify areas of system improvement in your process.
Before the Energy Audit
Just before you head out to start an energy audit, you should have collected your plant’s/institutions performance data for preliminary analysis. This needed information is:
1. Electricity consumption records for the preceding 12-36 months in an Excel file- indicating consumption quantities and cost
2. Biomass/Gas/HFO/Diesel consumption records for the preceding 12-36 months in an Excel file- indicating consumption quantities and cost
3. Water consumption records for the preceding 12-36 months in an Excel file- indicating consumption quantities and cost
This information will help you calculate the Energy Use Index (EUI) and identify the major equipment and processes to focus on.
Energy Audit levels
There are three levels of an energy audits as summarized in the following table. They are based on those set by the Association of Heating Refrigeration and Air Conditioning Engineers (ASHRAE USA).
Ashrae Level 1 Energy Audit – Walkthrough/Preliminary
This is the most basic energy audit, and is used to give us an idea of whether a more comprehensive one should be done. It involves:
1. A walkthrough in the facility to understand the process
2. Asking a few questions about the equipment consumption, looking out for inefficiencies
3. Review of the water and electricity bills and any other data from the operations
From analyzing this data, the energy inspector is able to identify the most inefficient processes which will need to be analyzed more closely. More specific data from your facility may also be requested to give way for a Level 2 energy audit.
Ashrae Level 2 Audit – Energy Analysis and further survey
At this level, aside from doing everything under Level 1, more comprehensive facility data is gathered. This includes:
1. Electricity and fuel consumption and cost (for the past 12-36 months)
2. In-depth interviews with the facility personnel about the specific processes and equipment
3. Short-term metering of consumption of utilities (electricity, water, diesel, gas etc)
The resulting analysis of the collected information leads to the development of energy management opportunities (EMO) specific to the facility’s operating parameters. All things considered, this level involves a deeper energy assessment than level 1.
Ashrae Level 3 Energy Audit – Investment Grade Audit
This level builds up on the previous two by making financial analysis on the suggested EMOs. Accurate computation of the facility’s baseline operations is done to reveal how the EUI changes. Each major equipment’s energy profile is also generated and its behavior interpreted using contributing factors like seasonal changes, quality of raw materials, manual/automatic operation etc.
The major components of an investment-grade audit are:
1. Inventory of all the energy consuming equipment
2. Historical data analysis ( billing data for electricity, water)
3. Energy consumption analysis over the metered period
4. Analysis of the EUI
5. Identifying EMOs of the largest impact with regard to client requirements
6. Financial analysis of the EMOs
Financial analysis of the EMOs includes:
1. Simple Payback (SP)
2. Annual Rate of Return (ROI)
3. Internal Rate of Return (IRR)
4. Life Cycle Cost analysis
Choosing the right auditor will help you understand your current position on energy management. An energy auditor can quantify your current energy management efforts (or lack of it) and advise you on the steps you can take to improve your facility’s energy efficiency rating.