Northern Transformer designs for medium voltage padmount applications including wind and solar, with the same approach as its power transformers. We design for the customer’s lowest cost of ownership by focusing on quality and longevity instead of lowest upfront cost. To mitigate harmonics and gassing, we use high grade core steel with a three-legged stacked core design and circular coils. To maximize revenue, we optimize the transformer’s efficiency based on customer tariff rates, No Load and Load Loss targets.