What is an Energy Efficient Building?

TREES is able to achieve the highest level of energy efficiency for its clients through the design and construction of the most effective EE and RE upgrade projects.

As the Energy Performance of Buildings Directive of the European Union puts it, energy efficiency in buildings is “determined on the basis of the calculated or actual annual energy that is consumed in order to meet the different needs associated with its typical use…”

Simply put, the objective of an energy efficiency project is to use less energy to come up with the desired output. By using less energy, waste is reduced and the unnecessary consumption of fossil fuels is avoided.

Achieving energy efficiency in a building requires a comprehensive program that looks into the supply side (power and energy source) and the demand side, such as lighting, cooling, and other equipment use.


Benefits of an Energy-Efficient Building

Energy efficiency offers several significant benefits:

Substantial cost savings from saved energy and improved process efficiency

Environmental protection and resource conservation

Prestige and enhanced profile in the community

Many of the world’s top corporations have demonstrated their preference and commitment to green building, which incorporates EE measures.


Achieving Building Energy Efficiency

A comprehensive energy efficiency project begins with an energy audit. This generally involves several phases:


Preliminary or walkthrough audit

General audit

Investment-grade audit

In the preliminary and general audits, potential energy conservation measures and energy conservation opportunities are identified and explored. In an investment-grade audit, capital-intensive energy efficiency measures are identified and analyzed, accounting for the costs and ROI of these measures.

Based on the audit, TREES will recommend solutions, which may range from no cost or low cost to medium cost or high cost.

TREES shall also handle the implementation and monitoring of applied solutions and technologies to ensure your EE goals are attained. Monitoring is an essential component of an EE project. If it is revealed through monitoring that the target savings and efficiency are not being achieved, adjustments, modifications or new solutions may be implemented.


EE Technologies

TREES is an expert in various EE technologies. We will recommend the most appropriate technology, designed and constructed according to your specific building needs.

These are some of the EE solutions we provide:

Lighting and controls – it is estimated that lighting consumes about 20 to 30 percent of a building’s energy supply. We implement lighting controls in a wide range of sensitivity levels, and utilize energy-efficient LED lighting products.

Air conditioning ventilation – we shall review current installations and retrofit more efficient equipment or systems as may be needed, including Air Handling Units, Fan Coil Units, and ductwork. As with lighting, we can also apply controls in various sensitivity levels.

High efficiency motors – inefficient motors can cause wastage of up to 90% of their operation costs. Based on our audit, we can upgrade or replace inefficient motors with high efficiency ones. As part of the solution, we can also install metering systems to monitor the performance of new or upgraded motors.

Variable speed drives – applied to pumps, fans and compressors in motors or multi-drive machines, this technology can vary the speed of a device according to actual demand. When demand is low, speed is reduced, resulting in cost and energy savings. This also helps improve the efficiency of machines and prolong their useful life.

On-site cogeneration/trigeneration – a cogeneration/trigeneration plant can generate electricity, hot or chilled water, steam, and other by-products from a single power source, thereby optimizing energy use.

Flow control – this can regulate the intensity and time period of water flow, as well as the desired water temperature, saving water supply and the energy needed to achieve the desired water temperature.

Energy performance monitoring – this is a comprehensive system encompassing a metering system to analyze the building’s energy performance and come up with solutions where needed