AES Indiana knows that EVs are coming, but like many utilities, they didn't exactly know where they are now, or how customer adoption might impact their grid. When does EV adoption add up to something they need to care about?
We ran a bottoms-up analysis, starting by finding existing EVs, and then modeling the future impact of EV adoption for every substation, feeder circuit, and transformer on their grid. At just 5% adoption, the costs are significant enough to warrant intervention. Without mitigation, the potential cost blowup is in the $100m+ range.
And what can a utility do about this? We also modelled multiple interventions - time of use rates, managed charging, and a data driven planning scenario which is effectively "data as a non wires alternative". Big takeaways: *Time Of Use rates are much worse than doing nothing.*
Managed charging shows the highest cost savings, but much of that can also be realized by just actively monitoring EV activity and load growth and using that data to drive less conservative planning assumptions. Data as a non wires alternative!
We're excited to be able to share this work - we've done similar analyses on other grids, but AES was excited to share these results to help other utilities struggling with the same problem. Very grateful for their willingness to share!
A new white paper from Camus Energy and The AES Corporation predicts that at just 5% system-wide EV adoption, benefits to the grid start to outweigh the costs.
The study examines AES Indiana but the findings, the companies say, can be applied to other utilities anticipating new EV load: https://lnkd.in/e9-wpEps
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