Lumen Park Szolnok is a 138 MWp solar park on the northern edge of Szolnok, Hungary, built in 2021 and 2022 by EPC contractor Greencells and operated by SolServices.
Lumen Park Szolnok
138MWp
In operation since 2022
01
| Capacity | 138.35 MWp DC / 96 MWac, in two neighbouring plants of about 69 MWp each[1] |
|---|---|
| Location | North side of Szolnok, outside the M4 bypass, Jász-Nagykun-Szolnok county[2] |
| Construction | Started summer 2021; trial operation announced August 2022; in operation since 2022[3] |
| EPC contractor | Greencells[4] |
| Lender | UniCredit Bank Hungary[5] |
| Grid connection | 132 kV, through a new substation and high-voltage line to the local MAVIR substation[6] |
| Land | About 189 hectares[7] |
| Monitoring | Asset management, plant control and monitoring by meteocontrol[6] |
02
Lumen Park Szolnok was SolServices' first own investment and, when its trial operation started in 2022, the company described it as the largest solar park in Hungary. It was built as two adjoining plants, Szolnok I and Szolnok II, each of about 69 MWp of modules and 48 MW of inverter capacity.
The financing was a bilateral loan from UniCredit Bank Hungary, denominated entirely in forints with an interest-rate swap, at 80% credit intensity. UniCredit's 2022 annual report calls it the largest corporate green loan agreement of 2022 in Hungary, and the deal won a Transaction of the Year award that year. UniCredit's 2023 Green Bank release names the Szolnok financing as an example of its green lending.
03
SolServices built Szolnok as its first "new-generation, nature-friendly" solar park. The company commissioned a baseline ecological survey in 2021, before construction, started a three-year monitoring programme in 2023, sowed a dedicated seed mix between the panel rows and opened an educational trail. It says nearly 95% of the site remains green surface.
In October 2024 the Business Council for Sustainable Development in Hungary (BCSDH) gave SolServices a Sustainable Future Award in the biodiversity category for its Next-Generation Solar Park Professional Guide, which grew out of this park. The monitoring results, including higher plant species richness and protected species on site, are published on solservices.hu.
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Facts checked against these sources on . Lumen Park Szolnok is part of the SolServices portfolio; Bijen Jalili is General Manager of SolServices. Figures are the company's published numbers; check solservices.hu for the latest.
Finance and investment
Solar park loan DSCR in Hungary: how banks size debt with P90 yield, a DSRA and merchant haircuts, how KÁT, METÁR and merchant revenue differ, and SolServices' loans.
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Operations
Five operating decisions for a Hungarian solar park: curtailment, scheduling, O&M, availability and hedging, and the data each depends on. A framework, October 2026.
8 min read