AIIDA Energy advisory ESEN
Self-consumption · C&I

Self-consumption with batteries for businesses

We assess whether a battery makes sense for your self-consumption installation, at what size and with what savings, and we prepare the request-for-proposal process so you can compare bids on a like-for-like basis.

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What to expect

Charge cheap, discharge expensive. Maximise savings

Solar PV covers part of the demand around midday and the battery shifts energy from cheap hours to price peaks. The result is a lower bill every day, not only on the good days.

Real case, anonymised. Results depend on each site.

The same day, without and with the system

Drag the slider to compare how demand is met hour by hour: the hatched areas are energy no longer bought from the grid. On this day, the energy cost falls by 34%.

Without self-consumption With PV + battery
Energy bought from the grid Solar self-consumption Battery discharge Battery charging from the grid (below the axis) Hourly price
−18%Annual energy cost thanks to the battery
98.5%Solar output used on site
14%Unlevered project IRR
≈5 yearsSimple payback of the investment

Daily savings over one year

Number of days by the saving achieved by the battery.

357 out of 365 days with positive savings. The result does not depend on a handful of favourable days.

average savingno savingmore saving →

Hourly simulation of a full year using the site's actual load profile, hourly prices and battery degradation. IRR and payback over the project horizon, before tax deductions.

How we approach it

From the load profile to the contract award

  1. 01

    Load profile

    We start from the site's consumption data and its supply contract: hourly profile, energy charge, capacity charge and tariff periods.

  2. 02

    PV and battery sizing

    We assess scenarios of PV capacity and battery size: direct self-consumption, surplus management, load shifting to the most expensive hours and peak-demand reduction.

  3. 03

    Economic study

    We quantify the bill savings of each scenario and weigh them against CAPEX, OPEX and system degradation over its lifetime: payback, IRR and cash flows.

  4. 04

    Request for proposals

    We draft the technical specification, set the evaluation criteria and prepare the request-for-proposal process. We normalise the bids received and compare them on technical, economic and warranty terms.

On the buyer's side

Independence to buy with judgement

We recommend what suits the project, not a vendor. That technology neutrality is what makes it possible to specify what the site needs, compare bids on a like-for-like basis and decide with full information.

What we deliver

  • Recommended PV and battery sizing.
  • Savings and payback estimate by scenario.
  • Technical specification for the request for proposals.
  • Like-for-like bid comparison and award recommendation.

Why AIIDA

IndependenceTechnology-neutral, with no conflicts of interest.
End-to-endFrom feasibility and sizing through to EPC support.
Executive deliverablesActionable and to the point — not shelf-ware reports.

Considering self-consumption with batteries for your business?

Tell us where your asset or portfolio stands and we'll come back with next steps.

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