TheTechno Optimist.

Rondo Heat BatteryRondo Energy—HEINEKEN, EDP and Rondo Energy deploy 100 MWh heat battery at Portuguese breweryRondo Heat BatteryRondo Energy—Siam Cement Group deploys heat battery at Thailand facility, becomes operationalRondo Heat BatteryRondo Energy—Covestro and Rondo Energy break ground on 100 MWh heat battery at Brunsbüttel, Germany

Rondo Heat Battery

by Rondo EnergyUS

Stores renewable electricity as heat in ceramic bricks, then releases it to power industrial boilers. Units deliver up to 7 MW of continuous heat.

DeployStage 4 of 5

Operational in Thailand (33 MWh). Under construction in Germany and Portugal. 11 projects, 200+ MWh total.

Updated Jan 2026Checked 10 Oct0 updates this week

Milestones

Next · Covestro unit commissioning
  1. Company founded2020Complete.
  2. First deployment announced at Siam Cement, ThailandMay 2024Complete.
  3. First commercial heat battery operational at Siam CementNov 2025Complete.
  4. HEINEKEN partnership announcedNov 2025Complete.
  5. Covestro groundbreaking in GermanyJan 2026Complete.
  6. Covestro unit commissioningTarget Dec 2026Not yet reached.

Most important updates

Upcoming

  1. Dec 2026Covestro unit commissioningin about 7 weeks (next)
  2. 2028HEINEKEN brewery online in Portugal
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