Gridsight raises $26M to unlock the grid's unused capacity

Gridsight, founded in Sydney in 2020, has argued that the grid has far more room than utilities act on; a $26 million Series B led by Insight Partners now funds its attempt to prove that in the United States and Australia. Galvanize and existing backers Airtree, Energy Transition Ventures and Aera VC joined the round, with proceeds earmarked for U.S. expansion and continued growth in Australia, ESG Today reports.

Gridsight's AI platform ingests smart-meter and network data to give utilities a real-time view of distribution capacity, and it lands at a moment when electricity demand is climbing after roughly 15 stagnant years, pushed by AI data centers, electric vehicles and broader electrification. New infrastructure has become slow and expensive to build, and the company argues that as much as three-quarters of existing grid capacity sits unused on average.

That unused capacity is the product. The software identifies where load can connect without hitting a constraint and where spending is genuinely needed, supporting the integration of solar, storage and other distributed resources. In Australia, Endeavour Energy has deployed the platform, doubling static household solar export limits from 5 kW to 10 kW while adding dynamic controls to protect the network; Gridsight expects the program to unlock more than $100 million in customer value and 600 MW of additional solar. The company also names Xcel Energy and Avangrid's United Illuminating as U.S. customers.

CEO Brendan Banfield describes the grid's capacity issue as not uniform: significant capacity exists for most of the year, yet it is uneven, dynamic and geographically dependent. That framing separates this deal from a conventional utility capex story: it is a bet not on new steel but on data finding slack in the old steel. The round's size makes the point: $26 million against the $750 million Form Energy raised in August for iron-air batteries. Storage stretches energy in time; Gridsight's software stretches it in place. If the software performs, it amounts to fresh capacity at a fraction of the capital cost of physical build-out.

The investment logic follows a view this publication has pressed: transition capital has moved from labeling to underwriting, and the strongest deals will be priced on measurable asset performance. Gridsight offers those terms: doubling export limits, unlocking 600 MW, cutting customer costs. For investors, the return question is whether software can do what construction would take years and billions to do. That is a falsifiable claim, and Endeavour's rollout is the first audit.

Endeavour's Australian network and Xcel's U.S. system will test whether the model travels across regulatory and data regimes, and whether Gridsight can repeat the Australian gains abroad without a bespoke build each time. If it can, this Series B will look early.