I have detected a pattern unfolding across multiple large energy efficiency portfolios: commercial and industrial prescriptive programs are struggling mightily. Why is this? My hypothesis was that we cycled through two or three rounds of lighting upgrades: From T-12 lamps and magnetic ballasts to T-8 lamps and electronic ballasts From once ubiquitous A19 incandescent bulbs to buzzing and dim compact fluorescent To mainstream and end-of-the-road (or world, if reaching goals is life or death) A19 LED bulbs and linear fluorescent lamps Lighting has endured for thirty-plus years for three reasons. First, it’s visible and a simple technology. How many “How…
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