Jakarta. German international development body GIZ sees the possibility of Berlin backing Indonesia’s 100-gigawatt solar push.

Coal-reliant Indonesia is now racing against time as President Prabowo Subianto insists on installing 100 gigawatts of solar power capacity nationwide by 2029. This ambition has caught solar powerhouse Germany’s attention.

“We are delighted to support this. Photovoltaics is the smartest choice, not just environmentally, but also economically," Lisa Tinschert, the energy program director at GIZ, told a press briefing in Jakarta on Tuesday.

"There is a lot on the menu [that] Germany can help [with]. We can connect you [Indonesia] with product developers and investors. We have the expertise, and we can bring in the feasibility studies," Tinschert said.

She also proposed training for workers in solar installation. 

Germany is working with the Energy Ministry to “strengthen the regulatory framework for a faster photovoltaic rollout”. Berlin has also partnered with the state utility firm PLN on making the power system “ready for the weather-dependent energy source”, according to Tinschert. Work is already underway for the development of solar-powered ice makers for Indonesian fishermen.

Solar energy makes up 15% of Germany’s electricity production.

What About JETP?
Germany has taken over Washington’s co-leadership in the Just Energy Transition Partnership (JETP), the climate funding package for Indonesia to switch to renewables. The US has withdrawn from the coal-to-clean deal on top of exiting the Paris climate agreement. Senior government economic official Edi Pambudi recently told a climate forum that the “JETP had been slower than promised with only a tiny portion of the money disbursed”. Tinschert refused to comment when asked why the funding had stalled.

By November 2025, Indonesia had gained the approval to tap $3.1 billion out of the offered $21.4 billion, according to a JETP report. The same document shows that German pledges total roughly $1.7 billion; almost $1.5 billion comes in concessional loans. The funding also covers a broad range of energy transition, including green bonds.

Estimates run by think-tank IESR show the 100-gigawatt-solar push requires a cumulative investment of between $51 billion and $78 billion over five years. Cancellation of fossil plants will need up to $212 billion.

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