In our first installment we noted that while sustainability may have fallen out of favour in the current American political and regulatory environment to the point that we had to counter the Chief Sustainability Officer graphics going around earlier this year with a Chief Sustainability Officer: USA Edition, sustainability, at its core is becoming more and more important to corporate survival. In our second installment, we described how sustainability concerns permeate every department of the organization, and failing to adhere to them is not only unsustainable in the environmental sense, but also in the business sense. In our third instalment we dove into the stakeholder engagement that is required for true sustainability success.
In this, our forth installment, we are going to begin by outlining the key areas in which to focus to identify the key projects that will increase both environmental AND business sustainability.
If you review our second installment, the biggest lifts in sustainability come from:
- (Non-Renewable) Energy Reduction
- Freshwater Reduction
- Non-Renewable Resource Reduction
- Equipment Reduction
- (One-Time Use) Demand Reduction
We’ll take each of these one-by-one and outline some of the major areas where there is a lot of waste. In future posts we may dive into the details on how to tackle them (where it’s not obvious).
(Non-Renewable) Energy Reduction
Energy is pricey. You want to reduce your energy needs across the board, and where you can’t reduce any further, you want to ensure that 100% of your energy is coming from renewable sources like Solar, Wind, and Hydro because, in the long term, that is the cheaper energy source.
Most operations have major energy inefficiencies in one or more of the following areas:
- Lighting. Many office buildings have lights on over half the day, if not way longer, and are still running low efficiency flourescent vs. high efficiency LED, where the former will give off 40 to 80 lumens per watt and the latter will give off 75 to 150 lumens per watt, halving to quartering lighting energy requirements; it may not seem like a lot, but a 40 w T12 flurescent bulb running 12 hours a day for a year consumes 175 kWh; an LED equivalent bulb will consume about 15 watts, or 65 kWh over the course of the year for an almost 38% savings. Now consider that you will likely have at least 1500 of these lighting a 10,000 square meter office (10,000 m^2 x 400 lumens / 2,600 lumens), that’s a savings of 165,000 kwH or about $25,000 if you’re paying 15c/kwH. Now, rip and replace of all of your lighting isn’t cheap, but with a lifespan estimate of at least 50,000 hours for an LED outlet, that’s a 10 year plus lifespan. Estimate about $45/unit for a bulk purchase, or $67.5K plus $28.5K for electrical work, and for an upfront investment of $96K, you’re looking at a savings of at least 250K+ (since we aren’t factoring in WACC) for an ROI of at least 260% (while working towards a green building).
- Heating: Whether you are heating with oil or off the grid, heating adds up quickly, especially if you are in a climate that drops below 0 for much of the winter. In northern climates, space and water heating can be quite significant since the US Energy and Information Agency estimates these costs make up over 2/3 of energy consumption for home and general office buildings. When it comes to heating, it’s not just the space, it’s the energy efficiency of the space. Poor insulation, leaky windows, poor use of natural light (and heat) can double or triple costs. While you can’t do much about this if you rent, if you are buying a commercial building, before you move in, do an energy efficiency analysis, and if it’s not in the top quartile, gut and redo it. If energy hungry lighting can eat up 200K/year in a large office building, heating (or cooling in hot climates) can eat up 2 Million, with a Million of that being unnecessary. Over decades, you will save 10X your up-front investment.
- IT: After heating and cooling, the next biggest energy hog in most office buildings is the IT infrastructure and the internal server farm. Especially if the IT department is running older servers three or four generations behind, as older servers tend to be huge energy hogs for the relative computing power and output. It’s also critical to ensure that the IT infrastructure is appropriately sized and continually running at 80% utilization, with the ability to spin up and spin down computing resources as needed.
In addition, in manufacturing, you also have to consider:
- Production/Assembly Lines: these are huge energy consumers; and energy efficiency all comes down to utilization; if you’re not using the line at 90% efficiency or more, you’re wasting energy; many operations who aren’t using a modern Manufacturing Planning / Execution System (MPS/MES) who think they are efficient will only be operating at 60% or 70% efficiency, at best; talk to the leaders in MPS/MES and even Semiconductor Chip Manufacturing and you’ll be shocked at the efficiency gains (and thus energy conservation) these companies find daily
Finally, in distribution, you also have to consider:
- Fuel Efficiency, and especially if you are transporting over long distances; are you transporting by air when you could be using ocean; are you transporting by truck when you could be using rail; are you using ethanol or hybrid trucks instead of dirty diesel; are you maximizing for full containers/truckloads or sending half-empty trucks; and are you ensuring that return trips are utilized, or sending them back empty?
We’ll continue with the other areas in our next installment.
