Amber bets Australia's 5-minute market lets households win the grid; $45M Series D

Amber Electric is an Australian licensed electricity retailer that passes wholesale spot prices through at cost and sells a subscription plus automation that charges home batteries and EVs when power is cheap and sells stored energy back at peaks.

That households, not utilities, would capture a renewables grid — with wholesale prices and software that charges batteries and EVs when power is cheap or negative.

Known raises: Commonwealth Bank's $20M for a 23% stake in the 2021 Series B (pv magazine), a $29M Series C led by Gentrack in February 2024, and a $45M Series D led by ETF Partners in June 2025 (Forbes Australia).

Chris Thompson and Dan Adams, former Boston Consulting Group colleagues, wrote the Amber business plan on a surf trip in Ecuador in 2017; Adams had worked on energy at BCG and at Tesla in Melbourne. The idea: households were generating rooftop solar but had no way to trade it intelligently, and Australia's market redesign toward renewables would reward whoever could move energy in five-minute windows. Amber launched publicly in late 2019 with investors including Square Peg, NRMA, Main Sequence and later Commonwealth Bank.

On 1 October 2021 Australia's National Electricity Market switched from 30-minute to five-minute settlement, a reform the market commission approved in 2017 specifically to reward fast-response technologies such as batteries. Amber, which charges a flat subscription and passes through wholesale prices at cost, grew with the battery boom: 30,000 customers by February 2024 and 40,000+ by June 2025, when it claimed Australia's largest VPP and about 40% of residential battery-automation installs. Gentrack led its $29M Series C and committed another $4.5M in the $45M Series D led by ETF Partners, alongside deals to bring Amber's automation to UK utilities E.ON and Ecotricity.

Amber is scaling: in June 2025 it closed the $45M Series D for international expansion, and in June 2026 ARENA added $13.6M to grow its vehicle-to-grid pilot from 50 to 1,000 homes and its smart-charging program from 950 to 2,000 customers, with 25 residential V2G installations already complete. It remains a licensed retailer and technology licensor rather than a hardware seller, with Gentrack distributing its software to utilities globally.

Australia's five-minute settlement and wholesale-demand-response reforms deliberately reward batteries and flexible demand, exactly what Amber's subscription automates for households.

With one in three Australian homes on solar but only about one in forty with a battery, the domestic battery-attach boom gave Amber a fast-growing pool to automate.

Incumbent retailers earn margin on energy itself, so a pass-through-plus-subscription model is structurally difficult for them to copy without cannibalizing their own generation assets.

Being Australia's largest VPP with roughly 40% of residential battery automation gave Amber the data and reference customers to license its software internationally through Gentrack.

When rules reward fast, flexible, distributed resources, the entrant that passes wholesale signals through and automates the response creates value incumbent margin models cannot follow.

As of 2026-06-12 Amber is scaling both as an Australian retailer and as a licensor: the June 2026 ARENA grant funds a V2G pilot across 1,000 homes and smart charging across 2,000 customers, building on 25 completed residential vehicle-to-grid installations, and its technology is being bundled with Gentrack's billing software for utilities in the UK, Europe and beyond. Customer and revenue figures beyond the 40,000 customers reported in June 2025 had not been published at that date.