Europe
Microgrid and energy software for European projects
Built around EU regulation, country-specific tariffs, and the realities of decarbonisation deadlines. Whether you are modelling a BESS project under the UK Capacity Market, a Spanish solar farm under autoconsumo, or a Greek island microgrid replacing diesel, HOMER works from the numbers your project actually faces.
The European energy context
Europe's energy transition is the world's most legislatively dense. RePowerEU set a 45% renewables target for 2030 and accelerated permitting timelines across the EU. The Fit for 55 package — including the revised ETS, the Carbon Border Adjustment Mechanism, and the Energy Efficiency Directive — is re-pricing energy-intensive operations from the Baltics to Iberia. The Clean Energy for All Europeans Package restructured market access, codified Citizen Energy Communities (CECs) and Renewable Energy Communities (RECs), and created new obligations on network operators under the NC RfG and NC DCC.
The 2024 Electricity Market Design reform introduced bidding zone reviews, capacity mechanism coordination across borders, and tighter BESS classification rules. And behind all of this sits a patchwork of national implementations: EEG 2023 §28a in Germany, the Contracts for Difference scheme in the UK, Spanish autoconsumo rules, the Italian Decreto Rinnovabili, and Nordic balancing markets that remain among the world's most liquid.
HOMER does not require you to simplify any of this. Feed in your tariff schedule, your grid connection parameters, your capacity market obligations — HOMER's dispatch optimiser handles the rest, producing the net present cost and optimal configuration numbers your lenders and regulators expect.
Four ways HOMER serves Europe
1. Utility-scale BESS and hybrid renewables
Battery storage economics in Europe are defined by the capacity markets, not just the energy market. The UK Capacity Market, Italy's Capacity Market (MACSE auctions), and the emerging EU-wide capacity mechanism coordination framework all require projects to model their dispatch against frequency response and balancing obligations. HOMER Front models co-located solar-plus-storage assets at the portfolio level, incorporating day-ahead and intraday price sequences from any European bidding zone.
Grid connection costs and curtailment risk — acute in Germany and Ireland — feed directly into HOMER's optimisation. A grid injection cap that would strand 30% of output on a poorly-modelled asset is a constraint HOMER evaluates automatically across the simulation horizon.
2. Commercial and industrial behind-the-meter
Industrial electricity prices across the EU are among the world's highest. German Eigenverbrauch rules allow manufacturers to reduce grid-supplied power by generating behind the meter — subject to EEG surcharge exemptions that change with plant size and self-consumption fraction. Spanish autoconsumo legislation (RD 244/2019) introduced collective self-consumption, enabling multi-occupant buildings and industrial parks to share generation. HOMER Grid models both configurations, including dynamic demand charges, power purchase agreements, and EU ETS exposure for installations above the threshold.
AI data centres facing grid connection delays in Ireland, the Netherlands, and the Nordics are pushing behind-the-meter generation to front-of-queue priority. EV charging infrastructure under the AFIR mandate is a new load type that changes the shape of C&I demand curves — HOMER handles both.
3. Energy communities
The Clean Energy Package's Articles 16 and 22 of the Internal Electricity Market Directive gave Renewable Energy Communities and Citizen Energy Communities a legal footing across all 27 EU member states. National transpositions vary — Italy's Decreto Legislativo 199/2021 is the most developed, with a feed-in tariff up to 110 €/MWh for shared generation. France, Spain, and Germany are at different stages of implementation.
HOMER Pro and HOMER Grid model the energy-sharing and virtual self-consumption arrangements that energy communities depend on. Multi-tenant configurations — apartment blocks, industrial parks, agricultural cooperatives — are native to HOMER's dispatch architecture. The model outputs the per-member tariff and payback that community prospectuses require.
4. Island and remote utilities
Europe has a larger island utility sector than most planners realise. Greece's non-interconnected islands — 29 systems under ADMIE authority — run on expensive oil-fired generation that Hellenic Energy policy now mandates for replacement. The Scottish islands (Orkney, Shetland, Outer Hebrides), Spanish islands (Canary Islands, Balearics), French overseas territories, and Italian islands (Sicily, Sardinia, Pantelleria, Lampedusa) all face diesel displacement economics where HOMER Pro's hybrid optimisation has a 25-year track record.
The Faroe Islands, Madeira, and the Azores each have distinct grid codes and subsidy structures. HOMER Pro's load-following and cycle charging dispatch strategies, combined with its battery degradation models, produce the long-run cost curves that island utility authorities and their regulators require before committing capital.
European country pages
Selected European projects
Grid-scale BESS dispatch optimisation
A 50 MW / 100 MWh BESS operator used HOMER Front to optimise dispatch across Capacity Market obligations, Dynamic Containment, and day-ahead trading, improving annual revenue by 12% against a single-revenue-stream baseline.
Industrial microgrid under EEG §28a
A mid-size automotive supplier modelled a 4 MW PV array with 2 MWh BESS under EEG 2023 §28a Eigenverbrauch rules. HOMER Grid identified a net present cost reduction of €1.4 million over 20 years versus grid-only supply.
Diesel displacement on a non-interconnected island
For a 6,000-inhabitant Aegean island, HOMER Pro modelled a wind-solar-BESS hybrid against ADMIE grid code requirements. The resulting design reduced diesel consumption by 74% and cut levelised cost of electricity by 31%.
Renewable Energy Community under D.Lgs 199/2021
An Italian municipality used HOMER Grid to size a shared PV-BESS system for a 120-member Renewable Energy Community. The model demonstrated a feed-in tariff recovery under the GSE incentive scheme and a 9-year simple payback.
Ready to model your European project?
Whether you're designing a BESS project under the UK Capacity Market, a C&I solar system under EEG, or an island microgrid in Greece, HOMER gives you the techno-economic analysis to make confident decisions.