What Likewatt does

Likewatt is a French B2B SaaS company founded in 2019 and headquartered in Lyon that develops software for the technico-economic sizing and simulation of renewable energy self-consumption projects. The company serves solar installers, engineering firms, energy service companies (ESCOs), renewable energy developers, and public-sector entities (Chambers of Commerce, collectivities) across France and selectively internationally. Its core product, Optiwize Pro, is a web-based SaaS platform that automatically retrieves up to two years of building consumption data at 10-minute granularity via direct integration with Enedis (national DSO) and Strasbourg Réseaux Électricité, then applies operational research-based optimization algorithms to determine the optimal installed power and technology mix across PV, wind, battery storage, virtual storage, hydrogen, EV charging, and domestic hot water systems. A complementary product, Optiwize Leads, is a white-label embedded web simulator that partners integrate on their own websites to pre-qualify inbound visitors before handing them to sales.

The business model is primarily annual SaaS subscription-based, with Optiwize Pro sold in three tiers (Essentiel at €1,090/year, Standard at €2,100/year, Premium at €3,800/year) differentiated by project capacity, concurrent users, and feature access. Optiwize Leads is sold on a hybrid model with a €590 one-time setup fee plus recurring per-lead billing, available standalone or bundled with Optiwize Pro. Revenue is supplemented by billable professional services (training, configuration, support). Go-to-market is a direct, sales-led B2B motion anchored by demo requests, with content marketing (blog, gated whitepaper), industry events (Energaïa), and customer testimonials as supporting channels. According to company-reported metrics, the platform has hosted 50,000+ projects since 2019, is used by 300+ client companies and 2,000+ daily users, and is bootstrapped and founder-led by Chady Kharrat (CEO), with no disclosed external institutional funding.

The platform's underlying architecture combines a proprietary optimization engine, real-time DSO data integrations, and a multi-technology simulation environment to compress feasibility studies from hours (Excel-based) to under three minutes, generate branded PDF reports, and support advanced use cases such as collective self-consommation operations and virtual-vs.-physical storage comparisons. Likewatt holds GDPR and French data-protection compliance certifications and is the data controller/processor for client consumption data retrieved under explicit customer consent workflows.

Name

Likewatt

Legal name

SAS LIKEWATT

Website

https://likewatt.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Likewatt is a French SaaS company founded in 2019 that provides AI-powered sizing and simulation software for photovoltaic and hybrid renewable energy self-consumption projects, serving solar installers, ESCOs, developers, and public-sector clients in France.

Ownership category

akta.pro rank

Product category

Renewable Energy Software

NAICS

Computer Systems Design and Related Services (5415)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Building Energy Management & Demand Flexibility Software (BEMS, Optimization) (EUAFAGAK)

Keywords

• Photovoltaic project sizing
• Renewable energy software
• Solar feasibility studies
• Self-consumption optimization
• Energy simulation SaaS

Headquarters

HQ city

Lyon

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations

Revenue model

1. Optiwize Pro SaaS Subscriptions: Annual subscription-based SaaS licenses sold in three tiers (Essentiel, Standard, Premium) differentiated by number of simultaneous saved projects per year (10, 120, 300), number of simultaneous users, feature access (e.g., multi-meter scenarios), training, and support SLA. Pricing ranges from €1,090 to €3,800/year. All tiers include an initial onboarding session and chat/email support.
2. Optiwize Leads – white-label simulator with lead-based billing: Optiwize Leads is sold with a one-time setup/installation fee (€590 HT) plus recurring billing per qualified lead received per month. It is available as a standalone white-label product or bundled with an Optiwize Pro subscription (custom pricing on request).
3. Professional services (training, support, paramétrage): Beyond the included onboarding session, Likewatt offers personalized 2-hour training sessions, technical and functional support, account configuration, document creation, and reporting as billable Prestations beyond the base subscription.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Likewatt provides SaaS software for the technico-economic sizing and simulation of renewable energy projects, with a focus on photovoltaic self-consumption. Optiwize Pro uses operational research and AI to automatically determine optimal system sizing across PV, wind, battery storage, virtual storage, EV charging, hydrogen, and domestic hot water, ingesting real consumption data at 10-minute granularity directly from French distribution system operators. Optiwize Leads is a white-label embeddable web simulator that captures and pre-qualifies inbound traffic into sales-ready leads for solar installers and energy companies.

Product overview

Likewatt offers a dual-product SaaS platform centered on photovoltaic and renewable energy project optimization. Optiwize Pro is the core professional tool for conducting comprehensive techno-economic feasibility studies, featuring AI-powered automatic sizing optimization and multi-scenario comparison. Optiwize Leads serves as a white-label web simulator for lead generation, natively connected to Optiwize Pro. Together, the two products form an integrated sales-enablement ecosystem where leads are captured, qualified, and seamlessly transferred to detailed project studies.

Differentiator

Problem solved

Functional benefit

Brands

• Optiwize Pro: SaaS software for professional photovoltaic project dimensioning and optimization, featuring AI-powered simulation, consumption data analysis, and customizable reports for solar installation projects.
• Optiwize Leads

Products and services

• Optiwize Pro SaaS software platform for professional sizing and modeling of photovoltaic, wind, and hybrid renewable energy projects. It collects consumption data at 10-minute intervals via PDL/PRM meter numbers, uses AI-powered optimization algorithms (operational research) to automatically calculate optimal installed power, supports comparison of multiple scenarios (individual and collective self-consumption, surplus sale, full sale, with or without storage, virtual storage, EV charging, hydrogen, domestic hot water), and generates customizable professional PDF reports. Sold in three annual tiers (Essentiel, Standard, Premium) priced from €1,090 to €3,800 per year.
• Optiwize Leads White-label lead generation simulator integrated into client websites via iframe or API. Prospective end-customers simulate their self-consumption project on the partner's own branded web page, visualizing savings and ROI, and become qualified leads delivered to the partner's sales team. Available as standalone (€590 HT setup fee plus per-lead recurring billing) or bundled with Optiwize Pro under custom pricing.

Quantifiable outcome

• Feasibility studies completed in under 3 minutes (vs. hours with Excel-based approaches)
• +4 more outcomes

Named customers13 records

Segments5 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• EnediscoreTechnology or IntegrationEnedis is the primary French electricity distribution network operator. Likewatt integrates with Enedis via the PRM/PDL number to automatically retrieve 2 years of historical consumption data at 10-minute granularity and load curves. The CGU documents the explicit consent workflow required from end customers for this data access. This data integration is foundational to Optiwize Pro's value proposition.
• Strasbourg Réseaux Électricité (SRE)coreTechnology or IntegrationStrasbourg Réseaux Électricité is the local electricity network operator for the Strasbourg region, operating outside the Enedis footprint. Likewatt integrates with SRE for data access in the Strasbourg region, enabling the same 10-minute consumption data retrieval for projects in that area. This extends Likewatt's data coverage beyond the standard Enedis perimeter.
• HelliominorImplementation/ SI/ Consulting PartnerHellio is a multi-trade energy efficiency company that uses Optiwize Pro for its photovoltaic studies. Featured in a testimonial video demonstrating how they use the software for faster, more precise PV studies. Represents a reference customer using Optiwize as part of their service delivery.
• Serfim ENRminorChannel Partner/ Reseller/ DistributorSerfim ENR is a renewable energy development company that uses Optiwize Pro multiple times per week for upstream project sizing. Their endorsement and logo appear in Likewatt's customer trust section, indicating an active user relationship.
• FJF EnergiesminorChannel Partner/ Reseller/ DistributorFJF Energies is a PV installer featured in a detailed case study on Likewatt's blog. Their technico-commercial uses Optiwize Pro daily for 2 years to design self-consumption projects and integrate storage. Represents an active channel partner using the tool to deliver projects to end clients.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Energy Toolbase: Energy Toolbase is a US SaaS platform for modeling and proposing solar-plus-storage projects, with utility rate and tariff data integration. It is a direct functional peer to Optiwize Pro for the technico-economic sizing and storage-comparison workflows that define Likewatt's core use case.
• Aurora Solar: Aurora Solar is a US-headquartered SaaS platform for solar PV system design, sales and proposal generation, used by thousands of installers globally. It is the closest global direct competitor to Optiwize Pro, addressing the same pain point of turning consumption/site data into fast, professional, sales-ready PV studies.
• OpenSolar: OpenSolar is a free, cloud-based solar design and sales platform used by residential and commercial installers. Like Likewatt, it targets solar professionals with end-to-end design, proposal and CRM workflows, but lacks Likewatt's specific French DSO data integration and collective self-consumption modeling.
• HelioScope: HelioScope (by Folsom Labs, acquired by Aurora Solar) is a web-based PV design and simulation tool used by professional installers and engineers. It is a direct peer for Likewatt's technical PV modeling capabilities, with strong adoption among mid-to-large solar professionals.
• PVcase: PVcase is a Lithuania-based SaaS for utility-scale solar project design and layout. While it focuses on larger ground-mount projects rather than rooftop self-consumption, it is a comparable vertical SaaS for the solar design workflow and targets a similar professional buyer persona.
• PVsyst: PVsyst is the Swiss-developed industry-standard technical simulation software for PV system yield and performance modeling. It is a direct peer for the technical energy-yield and sizing functionality of Optiwize Pro, although it is sold as expert desktop software rather than a B2B SaaS.

Broad incumbents

• SolarEdge: SolarEdge is a global inverter and PV electronics incumbent that offers a designer tool for system sizing and layout as part of its broader hardware portfolio. It competes at the edges of Likewatt's use case but as part of a hardware-led offering, not as a specialist vertical SaaS.

Emerging players

• Solargis: Solargis is a Slovakia-based provider of high-resolution solar resource and meteo data, used by developers and engineers for yield assessment. It is comparable to Likewatt at the solar data layer (irradiance, production estimates) but does not provide the integrated sizing and consumption-data workflow.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/likewatt
• Xx.com/likewatt_fr
• Facebookfacebook.com/profile.php

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Likewatt