Amazon, Google, Microsoft, Nucor pilot clean-energy tariffs with Duke Energy

Amazon, Google, Microsoft, Nucor, and Duke Energy agreed to explore new rate structures, including Accelerating Clean Energy and Clean Transition Tariffs, to share risk on emerging clean technologies in the Carolinas. The corporate-utility tariff model offers a template for Indian industrial buyers procuring carbon-free power.

Amazon, Google, Microsoft, steel producer Nucor, and electricity provider Duke Energy announced agreements to explore approaches for promoting carbon-free energy generation, including new rate structures that share risks of emerging clean technologies. Unveiled at the White House Summit on Domestic Nuclear Deployment, the proposals introduce new rate structures in North Carolina and South Carolina aimed at reducing long-term clean-energy costs through early commitments. The models feature Accelerating Clean Energy (ACE) tariffs and a new Clean Transition Tariff (CTT).

Large commercial and industrial electricity consumers, utilities, and clean-energy developers are affected. ACE tariffs would lower costs for new technologies by letting large consumers support clean energy projects through innovative financing and contributions, backing on-site generation, load-sharing programs, and clean energy asset investments. The CTT is designed to align clean energy generation with customer demand to accelerate grid decarbonisation, with Duke Energy offering tailored portfolios of new carbon-free energy to commercial and industrial clients.

Large industrial and corporate energy buyers should monitor how ACE and Clean Transition Tariffs in North Carolina and South Carolina structure early commitments and risk-sharing for emerging clean technologies. Utilities and developers should track how tailored carbon-free portfolios align generation with demand to accelerate decarbonisation. Indian industrial buyers and discoms exploring corporate clean-power procurement should watch how these tariff designs share technology risk and lower long-term costs for carbon-free energy.

Key figure — Rate structures proposed: ACE tariffs and a Clean Transition Tariff in North and South Carolina