The commercial and industrial market for efficient greenhouse gas (GHG) emission-reducing products has evolved enormously. LED lighting came along, and the savings were so significant — often 90% over prior technology — that the benefits of improved quality and color of the light, enhancements to safety and product quality in manufacturing, improved retail sales and even increased community safety were values generally overlooked. The savings alone were so compelling that the use of return on investment (ROI) and simple payback period (SPP) became rampant, because that was a fast, easy way to make a sale. Rebates and incentives compounded the relative ease of selling, even shortening the sales cycle with a simple, albeit myopic, financial yardstick. No other explanation or analysis was needed to close the sale. The shortcuts that worked for single-measure retrofits became a habit that we carried into more complex, multi-measure capital projects, where they don’t fit. As a result, we got complacent. All of us.

With LED technology now mainstream and the accepted choice for lighting, incentives and rebates for LED products are gone. Our energy efficiency and GHG-reducing attention has shifted to the larger building systems and technologies involved in HVAC and building controls. These capital-intensive projects impact buildings and their occupants in a myriad of ways. They have long sales cycles in addition to long design and build cycles, with far-reaching impact on the occupants and building operation. This complexity should compel us to take a more holistic assessment of the impact of these capital items, far beyond energy usage.

In most cases, energy savings, while valued, may not be the primary justification for energy efficiency and GHG-reducing capital investments. Today, more often, they are frosting on the cake — valuable, but not the primary reason for making the cake in the first place.

So, what should be driving the decision process, and how should it be measured?

Real value is created when investments deliver measurable business, operational and human outcomes such as:

• Increased productivity
• Reduced waste
• Reduced shrinkage
• Higher rents through inherent property value improvement
• Lower vacancy rates due to increased property desirability
• Higher sales price per square foot (capital value recovery)
• Improved student achievement
• Lower absenteeism
• Increased employee and/or customer comfort
• Increased sales and throughput
• Avoidance of government mandate penalties
• Enhanced public image and brand value
• GHG reduction
• And more

These are the outcomes decision-makers and building owners care about. When we take the time to identify, quantify and monetize these non-utility and non-financial benefits, the size or duration of incentives, rebates or tax credits becomes far less important — sometimes irrelevant.

Our field of view needs to expand and include these valuable, positive, long-term outcomes in our decision-making process.

ROI is prevalent, but it has critical limitations that make it an incomplete — and often misleading — decision metric.

• Ignores the time value of money. Standard ROI treats a dollar earned five years from now the same as a dollar earned today.
• Highly sensitive to timeframes. ROI often favors short-term gains, discouraging long-term investments such as infrastructure, productivity or innovation.
• Incomplete attribution. In complex facilities or market environments, isolating the impact of a single investment from other operational factors is difficult, leading to unreliable ROI calculations.
• Does not adjust for risk. ROI does not distinguish between low-risk and high-risk projects, even when downside exposure differs dramatically.
• Masks scale and absolute value. As a percentage, ROI can obscure total value. A small project with a high ROI may deliver far less net benefit than a larger project with a lower ROI but greater absolute returns.

SPP focuses narrowly on how quickly an investment recovers its initial cost, nothing more.

• Ignores post-payback cash flows. SPP stops counting value once break-even is achieved, disregarding years, or decades, of real financial benefit.
• Encourages short-term thinking. Like ROI, SPP prioritizes speed over value, often eliminating high-impact, strategic investments.
• Fails to account for risk differences. SPP treats all paybacks the same, regardless of volatility or uncertainty.

Setup time, training, maintenance, integration effort and ongoing operational overhead are frequently overlooked, leading to underestimated total cost of ownership (TCO).

ROI and SPP fail to properly account for the time value of money, making them inadequate for infrastructure and capital-intensive projects where higher upfront costs are warranted by long-term operational and strategic returns.

As the Rocky Mountain Institute concluded, ROI underestimates the value of an energy efficiency investment because it only accounts for annual energy cost savings and capital cost. It ignores other significant costs and benefits — rebates, maintenance savings, avoided immediate and future capital investments, and more — as well as savings that accrue beyond the time of the simple payback period. Because the inclusion of additional cash flows or the impact on long-term operating costs can significantly alter the decision to include or exclude a particular measure, a simple payback metric is not ideal. In sharp contrast, a comprehensive life cycle cost analysis (LCCA) gives decision-makers the full financial implications of various design decisions to make better decisions.

The basic premise of the LCCA method is that all costs arising from an investment decision are important, including future as well as present costs. Applied to commercial and industrial facilities, the LCCA method encompasses all relevant costs over a designated time, including the costs of designing, purchasing or leasing, constructing or installing, operating, maintaining, repairing, replacing and disposing of a particular design or system.

Should any pure benefits result — for example, increased rental income due to improvements, increased productivity of workforce, or reduced capital cost for other systems and equipment affected by a new piece of equipment or system — include them in the calculation of LCCA.

The far-reaching value and impact of superior energy efficiency and GHG reduction cannot and should not be measured in simple terms that consider only a single year or a too-good-to-be-true financial return hurdle. These investments last for decades, and the yardsticks used to evaluate them should be commensurate with that purpose and time horizon.

When comprehensively considered, the long-term benefits of improved efficiency and emission reductions will better inform your clients and highlight your value as a trusted adviser.