Sustainability @Scale 2015 - Quayle Hodek
summary
Corporations report concrete tactics that scale renewables: virtual power purchase agreements, utility green tariffs and on‑site arrays. Cost curves drop — solar panel prices fall ~80% in four years — and long PPAs promise multi‑million dollar savings over a decade. Walmart commits 7 billion kilowatt‑hours by 2020, with 300 on‑site systems (~130 MW, ~330,000 MWh ≈ 13% of that goal); East Kentucky develops ~12 MW of landfill‑gas and utilities offer bespoke contracts. Buyers’ principles now count 34 corporate signatories.
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