Greenbit Energy operates a 2 MW hybrid renewable power plant on Saaremaa Island, integrating three 0.65 MW Vestas wind turbines with 0.53 MW of Maysun solar panels. An on‑site control system balances wind and solar output in real time and ties to the Estonian grid for backup, delivering continuous, lower‑cost electricity to residential, commercial and industrial customers.
Funding
Funding not disclosed
Founders
Product
Problem
Renewable electricity generation in isolated regions often suffers from intermittency, leading to supply gaps and higher costs compared to conventional grid power. Limited storage and reliance on a single technology exacerbate volatility, making it difficult for local communities and businesses to obtain reliable, affordable energy.
Solution
Greenbit Energy deploys a hybrid renewable platform that co‑locates Vestas wind turbines and Maysun solar panels on Saaremaa Island, leveraging the region’s strong wind and solar resources to smooth output fluctuations. The combined capacity of 2 MW from three 0.65 MW turbines and approximately 0.53 MW of solar generation provides a more constant power profile than either source alone. Real‑time balancing between wind and solar output is managed through an on‑site control system that optimizes dispatch based on weather forecasts and demand. A dedicated interconnection with the Estonian state grid supplies backup power, guaranteeing uninterrupted service during periods of low renewable generation. By aggregating the two technologies, Greenbit delivers electricity at a lower unit cost than the conventional grid, enabling cost‑effective supply for residential, commercial, and industrial customers on the island.
Target Audience
The primary customers are residential, commercial, and industrial electricity consumers on Saaremaa Island, as well as regional utility operators seeking stable, low‑cost renewable supply for grid balancing.
Features
- Three 85‑meter Vestas wind turbines (0.65 MW each) with high‑capacity‑factor operation in Baltic Sea wind corridors
- 0.53 MW of Maysun MS‑280/320 solar panels optimized for the island’s high solar irradiance and moderate temperature swings
- Integrated hybrid control algorithm that dynamically allocates generation between wind and solar to maintain target output levels
- Grid‑tie interface compliant with national transmission standards, providing automatic fallback to the state grid when renewable output falls below threshold
- Remote SCADA monitoring for performance analytics, fault detection, and predictive maintenance of both turbine and PV assets
- Site‑specific layout that maximizes land use while minimizing visual and environmental impact on the island ecosystem
- Energy pricing model calibrated to deliver electricity at rates below the national grid tariff, improving affordability for end users