meidh offers a wide range of energy management services that increase the value of your physical assets by reducing their utility costs. From performance verification to system optimization, meidh provides the insight, guidance, and assistance needed to achieve intelligently integrated solutions.
- Building Energy Modelling
- Commissioning (Cx)
- Retro-Commissioning (RCx)
- ASHRAE Level I & II Energy Audits
- 10 Pillars Assessment
There are a range of Building Energy Modelling tools that are available to meidh and its clients.
Building commissioning is a method of risk reduction for new construction and major renovation projects to ensure that building systems meet their design intent, operate and interact optimally and provide the owner what he or she expects. This systematic process typically includes building HVAC, controls, lighting, hot water, security, fire, life and safety systems.
Total building commissioning often includes additional essential buildings systems such as the building’s exterior wall, plumbing, acoustical and roofing systems. Commissioning these additional systems can reduce moisture penetration, infiltration and noise problems, and contribute to the building’s energy and resource efficiency and occupant productivity.
Successful Cx results in optimal energy efficiency, indoor environmental quality, reduced change orders during construction, extended systems life and reduced operation and maintenance costs, often paying for itself before construction is completed. To be most effective, building commissioning begins in the planning phase and continues through design, construction, startup, acceptance, training and the warranty period, and continues throughout a building’s life cycle.
The commissioning process can be applied to existing buildings that have never been commissioned to restore them to optimal performance. Retro-commissioning (RCx) is a systematic, documented process that identifies low-cost operational and maintenance improvements in existing buildings and brings the buildings up to the design intentions of its current usage.
RCx typically focuses on energy-using equipment such as mechanical equipment, lighting and related controls and usually optimizes existing system performance, rather than relying on major equipment replacement, typically resulting in improved indoor air quality, comfort, controls, energy and resource efficiency.
RCx typically includes an audit of the entire building including a study of past utility bills, interviews with facility personnel. Then diagnostic monitoring and functional tests of building systems are executed and analyzed. Building systems are retested and remonitored to fine-tune improvements. This process helps find and repair operational problems. The identification of more complex problems are presented to the owner as well. A final report, recommissioning plan and schedule are then given to the owner.
The American Society of Heating Air Conditioning and Refrigeration Engineers (ASHRAE) has developed standard energy audit levels. Primarily there are three levels of commercial energy audits, two of them conform to ASHRAE’s standards, and the third is a quick check-up for smaller businesses, or clients with a tight budget.
Overview or Walk-Thru Audit
Overview audits are the least expensive type of commercial energy audit. They involve walking through a facility, identifying energy conservation opportunities, interviewing facility personnel, and quickly reviewing the facility’s utility bills. The overview audit is fine for smaller organizations and those on a budget that want some quick tips on how they can reduce their energy usage and costs. It basically gives a road map of what to do.
ASHRAE Level 1 – Walk Through Analysis
ASHRAE Level 1 audits are more intensive than Overview Audits and are used for for clients who are seeking LEED-EB status.
The ASHRAE Level 1 audit focuses on low-cost/no-cost energy conservation measures, and provides a list of higher cost energy conservation measures. In addition to tasks performed in the Overview Audit, in the ASHRAE Level 1 audit, we report how much in energy and energy costs can be saved from each energy conservation opportunity. We perform an energy balance, which breaks out energy usage into different end uses.
ASHRAE Level 2 – Energy Survey and Analysis
ASHRAE Level 2 audits include a more detailed building survey, financial projections, and energy analysis than ASRHAE Level 1 audits.
Basically, ASHRAE Level 2 audits will identify all appropriate energy conservation measures for a facility, and a financial analysis will be performed based on implementation costs, operating costs, and attainable savings. You will know for each energy conservation measure, the amount to be saved, the amount the measure will cost, and the amount of time it will take for the measure to pay for itself. In addition, ASHRAE Level 2 audits will discuss any changes to operations and maintenance procedures.
ASHRAE Level 2 audits are used by clients who are seeking LEED-EB status. ASHRAE Level 2 audits are worth 2 points (LEED-EB Credit 2.1, Option B) and are sometimes selected by our clients as it is less expensive than Retro-Commissioning (LEED-EB Credit 2.1, Option A).
In addition, often times, investors will require more rigorous financial projections than ASHRAE Level 1 audits provide.
With ASHRAE Level 2 audits, we will provide realistic savings reports with regard to baseline operating costs. These reports will stress the expected return on investment, and projected savings will be presented in such a way that provides intensive detail, and instills confidence in the investor.
The 10 Pillars Assessment is a sustainability analysis tool built on continual improvement processes.