Commercial solar in Spain
Commercial Solar Knowledge Centre
Ten guides covering how commercial photovoltaic installations work in Spain, how they are sized and priced, what the regulatory position involves and how to judge a proposal.
Where should I start?
Follow the stage your project has reached.
New to commercial solar. Begin with how a system operates.
Establishing capacity. Read the sizing guide alongside the Datadis article.
Building the business case. Start with business electricity tariffs, then costs, payback and return.
Reviewing proposals. Use the quotation-comparison method.
Planning a larger system. Read permissions and grid connection, then the guide to capacity above 100 kW.
Knowledge Centre
Project fundamentals
How a system works, how its capacity is determined and what a proper assessment involves.
RECOMMENDED NEXTHow Commercial Solar Works in Spain
How commercial solar works in Spain, including self-consumption, surplus arrangements, permissions, batteries and grid connection.
Read article ↗
DETAILED GUIDANCEHow to Size a Commercial Solar System Around Business Electricity Use
How commercial solar capacity should be sized around interval electricity consumption rather than roof area or annual use alone.
Read article ↗
DETAILED GUIDANCEWhat Does a Commercial Solar Feasibility Study Include?
What a commercial solar feasibility study in Spain should examine before a business relies on projected costs, generation or returns.
Read article ↗Ready to consider a site? See commercial solar installation in Spain.
Knowledge Centre
Cost and return
What determines the price of a commercial installation and what determines whether it pays.
RECOMMENDED NEXTHow Spanish Business Electricity Tariffs Work: 3.0TD and 6.1TD
Understand Spain's 3.0TD and 6.1TD business electricity tariffs, including P1 to P6 periods, contracted capacity, excess demand and reactive energy.
Read article ↗DETAILED GUIDANCEHow Much Do Commercial Solar Panels Cost in Spain?
Commercial solar panel costs in Spain, including turnkey scope, price variables and how to compare realistic project budgets.
Read article ↗
DETAILED GUIDANCECommercial Solar Payback and ROI in Spain
How to calculate commercial solar payback and return in Spain using consumption, tariff and generation assumptions that can be checked.
Read article ↗Knowledge Centre
Evidence and proposals
The data a decision should rest on and how to test what you are given.
RECOMMENDED NEXTHow to Use Datadis Electricity Consumption Data for Commercial Solar
How Spanish businesses can use Datadis interval consumption data to assess and size a commercial solar installation.
Read article ↗DETAILED GUIDANCEHow to Compare Commercial Solar Quotes in Spain
How to normalise and compare commercial solar quotes in Spain by checking scope, generation models, savings assumptions and exclusions.
Read article ↗For larger roofs, see industrial and warehouse solar.
Knowledge Centre
Permissions and larger projects
The administrative position and what changes as capacity increases.
RECOMMENDED NEXTCommercial Solar Permissions, Grid Connection and Legalisation in Spain
The municipal, regional, electrical and grid procedures that may apply to a commercial solar installation in Spain.
Read article ↗DETAILED GUIDANCECommercial Solar Above 100 kW in Spain: What Changes?
What changes when a commercial solar installation in Spain exceeds 100 kW, including administrative, market and producer obligations.
Read article ↗For projects at this scale, see large commercial solar systems in Spain.
Editorial standards
Written to be checked rather than taken on trust.
Regulatory statements are drawn from primary sources, principally the BOE, MITECO, IDAE and the CNMC. Verified regulatory facts are kept separate from illustrative calculations, and worked examples state their assumptions.
Panel capacity in kWp is distinguished from inverter capacity in kW. Self-consumed, exported and curtailed electricity are treated separately. Time-sensitive articles carry review dates and link to the relevant sources.
No article promises a universal price, saving or payback period because those figures depend on the site.
Commercial assessment
Move from guidance to a specific site.
Commercial Solar Spain reviews and coordinates suitable enquiries. Technical assessment, system design, proposals and project delivery are handled by our installation partner, who is identified before technical assessment begins.
We work with one installation partner and encourage you to benchmark any proposal using the comparison method above.
Service coverage: mainland Spain and the Balearic Islands.
Commercial solar installationIndustrial and warehouse solarLarge commercial solar systems